Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0c27927dbe8e5d5…

MALICIOUS

PDF

56.1 KB Created: 2020-08-08 22:53:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b05d934e16c8a8c7552f15c1484b52a8 SHA-1: a8e013087f07750701d5587ed822fb31ec5a6684 SHA-256: d0c27927dbe8e5d55075a8433f9463681945c5af1ed9dfb39e1404b43dc77844
202 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating a phishing or SEO poisoning attack. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=roots+and+suffixes+worksheets+pdf' which is flagged as a malicious redirector. This redirector likely leads to a payload hosted on one of the numerous Shopify domains also present, which are part of the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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.ru/pify?keyword=roots+and+suffixes+worksheets+pdf In PDF document text
    • http://files.georgehi.net/uploads/1/3/2/6/132682048/bujeb_didizetidazipi.pdfIn PDF document text
    • http://files.autumncorners.com/uploads/1/3/0/7/130774969/3115405.pdfIn PDF document text
    • http://files.humanist-sociology.org/uploads/1/3/1/4/131453560/b1f85.pdfIn PDF document text
    • http://files.mothersunite.net/uploads/1/3/1/3/131379320/xokijux_bubebazirobi_diguwivos_befarevizopuwi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pekuxiwitijumowiviw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5586/4215/files/nopijuvagabutado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4635/4592/files/69644810215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0047/1456/files/30082952370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6770/3450/files/mukojenorawizapuvofof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8502/7745/files/list_of_awards_and_honours_2020_19.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6889/8966/files/darimulexivimomasuduxun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4345/4102/files/letter_e_tracing_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1778/0896/files/pefeliwaruleredikip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4053/8773/files/galefizojitovafusoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6217/3602/files/69331138279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8933/0330/files/engineering_economic_analysis_newnan.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE2 5328 bytes
SHA-256: 841fdb585ed576037c74c439fb57e2f621c69375d10e7483d1430f67a17dabd3
font_01_sfnt_off00007f18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F18 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_02_sfnt_off00008a73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A73 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_03_sfnt_off00009301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9301 14376 bytes
SHA-256: 8cbab719617680668114c8a3a5fe09d9eb210faba08e5f9be64ff894de43511c
font_04_sfnt_off0000bfcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFCF 5120 bytes
SHA-256: 71261d389a7aea7809699a69c948b33e04aef92d8a5e276a01aa359f03dfb0d1

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