Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe1b03d163e72394…

MALICIOUS

PDF

48.9 KB Created: 2020-08-07 12:40:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d191ec7a39f19b4eb77f3d31bb7c8e14 SHA-1: 6dbee340d39d3a0a842d91a494de9f292011f7c4 SHA-256: fe1b03d163e723942988236a8034114da3e269369e74b08dd035539ffc65d6ff
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with a critical heuristic identifying a redirector to 'ttraff.com'. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious sites. The ML classifier strongly supports the malicious verdict, and the presence of embedded URLs indicates an attempt to lead the user to external content, likely for phishing or malware delivery.

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.com/pify?keyword=question+tags+for+imperative+sentences+pdf In PDF document text
    • http://files.backwoodsbeersoap.com/uploads/1/3/0/9/130969776/xogudopimibotulop.pdfIn PDF document text
    • http://files.mrsfromm.com/uploads/1/3/0/7/130739996/rufeki-metulakedawifak.pdfIn PDF document text
    • http://files.pianomomsheetmusic.com/uploads/1/3/2/6/132682124/830d6a98.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/1/0432/8439/8246/files/11025977867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5077/0333/files/9173281351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2611/0888/files/31251013580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1530/6405/files/zovuxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9596/5352/files/50199161659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8171/8167/files/zabuzuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7367/3118/files/5496835342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/fifati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1571/6513/files/96537941768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5222/1091/files/rusifadodap.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_off00005d2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2D 5444 bytes
SHA-256: 911cbaa0ec9cd9c56ce575162e25b6386d87e2324b9f323cf65eb3d02e3b313b
font_01_sfnt_off00006fa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA0 10568 bytes
SHA-256: 6602516bd7b76ea8e82694fb0f9bc9a865b5b6524bdee7c4503ac764f7e78fd4
font_02_sfnt_off00009314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9314 16136 bytes
SHA-256: 288de71edf57bf886cdf3d07283545883080ed1af789eec4c78edd97f1224bec
font_03_sfnt_off0000a7fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7FE 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378