Malicious PDF — malware analysis report

Static analysis result for SHA-256 da8378cf2666ff90…

MALICIOUS

PDF

41.7 KB Created: 2020-08-06 03:30:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 260792450a3002d51fe638f05b2273d9 SHA-1: fc32dcecfb353e63c45ee960925ac0a83034a913 SHA-256: da8378cf2666ff903de2612bba15e4cdfc74acdddfb1b13ca5962bb15c610f45
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=cattell+iq+test+pdf', which is designed to lure users to potentially harmful websites. The document also features a large number of embedded links to other PDFs hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly indicated maliciousness, supporting the presence of these suspicious links.

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=cattell+iq+test+pdf In PDF document text
    • http://files.maternity-depot.net/uploads/1/3/0/8/130814423/980a52a5.pdfIn PDF document text
    • http://tegonufar.coupadvantageportal.com/uploads/1/3/1/1/131163667/pujukipixolabif.pdfIn PDF document text
    • http://bubat.mountainfresh.org/uploads/1/3/1/3/131379803/4539897.pdfIn PDF document text
    • http://files.significanthealing.com/uploads/1/3/0/7/130739916/418075.pdfIn PDF document text
    • http://files.alfatihainstitute.com/uploads/1/3/2/6/132681743/wavakekovu_pisozoji_tifojivo_bawokavukiti.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/1/0441/3823/4008/files/sodabikigepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3351/files/46862545667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sosivizugepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/runuwadobona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8025/3593/files/gebiweji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3368/8226/files/avid_pro_tools_s3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5249/9098/files/bugugibupilutapokejewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4520/7714/files/jalifajuwerigonik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2470/9794/files/certificate_samples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3427/9062/files/66064868480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99324429390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1384/6693/files/56391045576.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 4

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_off00006621.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6621 4972 bytes
SHA-256: db8d50afebbd213c851a71a90573d78cf52265abfe042938f0b452c2b857ee99
font_01_sfnt_off0000771b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x771B 10324 bytes
SHA-256: d1160b4f75e98d97863a00154bfcf0686e3aee17e11251b3110fe0dc6af5a70e

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