Malicious PDF — malware analysis report

Static analysis result for SHA-256 96f6aaa9e1588b8a…

MALICIOUS

PDF

41.6 KB Created: 2020-08-03 20:47:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 22c015c3ce3a696b22d87f71d1339389 SHA-1: 0958faf6266bfeaa65d9f91e1167188c4dda20f1 SHA-256: 96f6aaa9e1588b8af720aaf8d8f638264d469aa71f70fa63da69f0d5ace46097
194 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised as an academic syllabus. This suggests the document's primary purpose is to redirect users to malicious content, likely for further exploitation or phishing. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine visibility for malicious content. No scripts were extracted from this sample.

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=appsc+group+1+prelims+draft+syllabus+2020+pdf In PDF document text
    • http://files.wmiaofnh.org/uploads/1/3/1/3/131380000/xegekipix-xesonirogopevug-fotatiso.pdfIn PDF document text
    • http://files.fourfilliesfarmok.com/uploads/1/3/0/7/130738700/be43dd.pdfIn PDF document text
    • http://files.learntarotcards.com/uploads/1/3/0/8/130814345/748067.pdfIn PDF document text
    • http://files.moonwaterdojo.com/uploads/1/3/0/7/130776822/zosajunu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4151/2855/files/10083226499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5520/8858/files/30513566132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8851/9080/files/monebufebogaxazajonikabaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2492/5340/files/jeroxediguwol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9735/7472/files/ps3_controller_driver_for_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7503/4520/files/68194506829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3784/9762/files/linoneguwarufug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1688/6184/files/47066464792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0709/0589/files/32178633035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7082322425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76588695657.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
🗂 Part of campaign: fourfilliesfarmok.com 4 samples

Related samples 5

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000628b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628B 6032 bytes
SHA-256: de76a89492872f2c8b77806f3da45955f6e4fe24d667d6a83c5e895685292e83
font_01_sfnt_off00007704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7704 10044 bytes
SHA-256: d493f8ff1723c5b8172024434ff54d68eec294c20c202ce8b7ae19f40d8ade9f

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