Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2a198192217d6eb…

MALICIOUS

PDF

190.3 KB Created: 2020-08-09 19:50:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 814f5ba46834242ad8dcd341c182cad3 SHA-1: 94081e845f9b84bae0361071acf6fc5acfe2efbd SHA-256: c2a198192217d6ebb63799b1dd964d1a9b016ae945b29afa66db2f2a8da4ff0b
142 Risk Score

Malware Insights

MITRE ATT&CK
T1204.001 Malicious Link T1566.002 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains the same URL. A low-signal heuristic for a 'download button' further supports the lure mechanism. The primary IOC is the malicious redirector URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=asciidoc+tutorial+pdf In PDF document text
    • http://files.accendoapac.com/uploads/1/3/0/7/130739348/1885001.pdfIn PDF document text
    • http://files.stergiongroup.com/uploads/1/3/1/8/131856539/bd4093165558.pdfIn PDF document text
    • http://linudumex.ceepromotionsbustrips.com/uploads/1/3/0/9/130969060/7cafccec0cd99b.pdfIn PDF document text
    • http://files.trueembodiment.com/uploads/1/3/0/7/130740232/cd4a44fc20c3a4.pdfIn PDF document text
    • http://zegani.upsingingambassadors.com/uploads/1/3/1/0/131071252/5669f9a2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7263/4533/files/nilibizidaduvab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5820/7643/files/how_to_convert_xfdl_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5096/4904/files/36610749895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3846/5435/files/watch_vulture_city_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/american_english_file_5_teacher_s_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3400/8987/files/17688090761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/quran_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2465/3224/files/13251716723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7238/8246/files/fasuxirusakiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7460/0598/files/sql_interview_questions_for_experienced_developers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1403/7409/files/c_c_road_estimate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1289/7437/files/nivizinedirisipokumanu.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000280bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x280BF 4796 bytes
SHA-256: bae01abb1c14a703c9e721d11eebbe2d1d074958c576dcd5a8041f10d9dabd16
font_01_sfnt_off00029113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29113 18040 bytes
SHA-256: 458b5d71651fc2c62aefe38d020faf840255cce752032d71b2f1ce1d8f8bc6eb
font_02_sfnt_off0002c8a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8A5 16164 bytes
SHA-256: d221d0159003a16260aa815ef58ee88dfb02c7586eb2c734f5870684c3082db7
font_03_sfnt_off0002ddb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DDB0 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34