Malicious PDF — malware analysis report

Static analysis result for SHA-256 f262225aa5708e92…

MALICIOUS

PDF

45.1 KB Created: 2020-08-23 16:25:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 52a4c2b710ce4a676ab5502083b3ed6b SHA-1: c5fc2485f84807b9f4f3c02bf31c65d1d5fbab91 SHA-256: f262225aa5708e9227ea62e5d3ffb2ca6aa2019a6e9bcbeb0b56c268bbad6698
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating redirection to malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'classifying triangles answers' and references wkhtmltopdf, suggesting a lure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=practice+b+classifying+triangles+answers, which is likely used to redirect users to a malicious site. The presence of numerous PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=practice+b+classifying+triangles+answers In PDF document text
    • http://files.eringipfordfreelance.com/uploads/1/3/0/8/130814397/7576839.pdfIn PDF document text
    • http://bumojiril.sietinternational.org/uploads/1/3/0/7/130739456/xodexifez.pdfIn PDF document text
    • http://files.spaceschool.ca/uploads/1/3/0/7/130739982/ginux.pdfIn PDF document text
    • http://files.templeemanuellongbeach.com/uploads/1/3/0/7/130776081/doburetodijab-jorul-zebute-basizimiw.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/1/0429/8578/3447/files/sezafakeged.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6887/4903/files/80528857832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4692/0615/files/48686704063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/vudekaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6643/3429/files/bijenoforenukevutuzabuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6544/9371/files/mejifobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7106/8577/files/begalisukoxolinen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7920/5013/files/bisod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8266/2553/files/nibenivugudatemirunove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1935/3767/files/john_deere_345_parts.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6457 5060 bytes
SHA-256: 574544b27a3e7bf7176178552dbbf7103cb1255e033d553c8af5db897559c9aa
font_01_sfnt_off000075a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75A2 10436 bytes
SHA-256: eabccf7b1bf6bf1e0fea78ee85e3881f3dcd9fbc6b58daa254fbd2ce74d1c5db
font_02_sfnt_off00009953.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9953 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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