Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7a5b2407916381b…

MALICIOUS

PDF

59.4 KB Created: 2020-07-28 01:46:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fef9ca95978bbe3ead20a06a89545136 SHA-1: cb42833f3ebc08bd6eb1d8ef5b83a717dca3be85 SHA-256: b7a5b2407916381bb3b0fc242a4b5a0891f4dd583d56c8a414aba950f08fab2c
214 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs. The document body, though heavily obfuscated, contains keywords related to 'application form' and 'bursary', suggesting a lure. The presence of a callback phishing lure heuristic further supports the malicious intent.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=fnb+bursary+application+form+2018+pdf In PDF document text
    • http://files.canoetorontoisland.com/uploads/1/3/1/4/131438509/8907185.pdfIn PDF document text
    • http://files.lacucharamarket.com/uploads/1/3/1/0/131070207/nibizufagugo_mitus_penagarop.pdfIn PDF document text
    • http://files.pisaisall.com/uploads/1/3/0/7/130740018/vozifiz.pdfIn PDF document text
    • http://files.busterbledsoeband.com/uploads/1/3/1/4/131454286/5326988.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/1/0433/2489/9496/files/11136926835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/neradifatigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6717/9162/files/32783703231.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6028/0982/files/pifedinilagemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4817/9611/files/43319119670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/movebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7539/3944/files/72772104915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1143/8752/files/55150091571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3080/5671/files/81397807519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3087/2215/files/wegusitabijinekukovaropu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5598/8387/files/bigofijatoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45560821546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pigagijewunafusigiku.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA910 5780 bytes
SHA-256: 9c9f962bb56b242784a0e7ee5246d7fee968e35de0b4155651ff5537e01607e0
font_01_sfnt_off0000bc96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC96 10508 bytes
SHA-256: 936f8b462c714c225c85bdf034aa084c82b15360e7a5baee69436baa59856ba0

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