Malicious PDF — malware analysis report

Static analysis result for SHA-256 28968391a4ee304c…

MALICIOUS

PDF

140.0 KB Created: 2020-08-22 07:08:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 383dad4b5f904ea71f6a68eaca4ca0a3 SHA-1: bf4ba0534b60b27f8778aaa6a73e7efb7fca9648 SHA-256: 28968391a4ee304c1a7ed422f2edd12fca9ff402e23179afe93bf753bfcdf61d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users to malicious content. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on shopify.com and other domains, suggesting a link farm or redirection strategy. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9751

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=the+answer+to+everything+is+42+movie In PDF document text
    • http://files.pngonlinetrade.com/uploads/1/3/1/4/131483249/rojuvejupupiza.pdfIn PDF document text
    • http://files.jamquest.org/uploads/1/3/1/4/131453861/4840432.pdfIn PDF document text
    • http://files.whittaylorcomics.com/uploads/1/3/2/7/132740595/kevotamefakulus.pdfIn PDF document text
    • http://files.strgir.com/uploads/1/3/0/8/130873868/4381992.pdfIn PDF document text
    • http://files.mddedcelks.org/uploads/1/3/1/3/131383998/7162934.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0051/8040/files/90321634606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0591/9903/files/rifuwofujivibine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1243/1776/files/nupizolejafulugeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4829/6863/files/65712576962.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2536/6165/files/56753144579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1561/7182/files/after_12th_science_courses_list_pcb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7870/4549/files/chemistry_quiz_questions_and_answers_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9105/7058/files/karoluxabed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6264/7191/files/tuvelafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2813/5591/files/esab_pcm_875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5121/9104/files/80828037491.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text
    • http://sinhala.sourceforge.net/In PDF document text
    • http://sinhala.cvs.sourceforge.net/viewvc/*checkout*/sinhala/sinhala/fonts/CREDITSIn PDF document text
    • http://www.gnu.org/licenses/gpl-2.0.htmlIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 12

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_009_off0001797b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1797B 3204 bytes
SHA-256: 004255bd3bd10f7fb9deef8c074156735f1d4b95e2564b931e6059fb921459a6
font_00_sfnt_off000123f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123F1 6744 bytes
SHA-256: 0e099439fad9d82cab7fe652aa00060dd1135bc3bc3a9cb372ccb0b68d5d5473
font_01_sfnt_off00013b7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B7C 5488 bytes
SHA-256: d8e600474693b79b2ec786b8383a12e2927870ede824b0e8bccbfec0c4b07361
font_02_sfnt_off00014e1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E1E 3792 bytes
SHA-256: 1fd464739946460e833ade7eb0aa23b85dc4b12a492f056daa29606439ddb77d
font_03_sfnt_off00015c08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C08 4892 bytes
SHA-256: e0079f09db5e3adb03f9f87f95add1711d4539799d988c8fe3aa7ab3b51b0831
font_04_sfnt_off00016bde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16BDE 3600 bytes
SHA-256: 71b71b3c95c396df86b74eda9d675472dd4ded91f59021c0ba2dd788bd645a1e
font_06_sfnt_off0001865f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1865F 5612 bytes
SHA-256: 3d802cc5995d55f536a17739b8feb7207f58781f341115108218652133911458
font_07_sfnt_off000199a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x199A6 2812 bytes
SHA-256: 696cd7a76e16d9663ebac5964e2ac97592af2debc62c60b4c02a8bfd9aa268b8
font_08_sfnt_off0001a5f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A5F9 6476 bytes
SHA-256: 71f0ea6b182f67b27e6afd052ef602895c4138dd0e70c0f98b4e68aa9f7baf72
font_09_sfnt_off0001b738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B738 19508 bytes
SHA-256: b3f9c0b155185fc3312e877320d6e1dbb584b1988883d96f79639da7ab2bc160
font_10_sfnt_off0001efdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EFDD 19624 bytes
SHA-256: 7a1c8c21cb24b13eef72d14a4a5d00de6ac8e936ec2de5c537315d57380e07d0
font_11_sfnt_off00021107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21107 3284 bytes
SHA-256: dfca31268cb36367e44c29d80ac6d57124a4a863b1deb62a7c217727ab33a636

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