Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8b4c2e2c80923f7…

MALICIOUS

PDF

44.3 KB Created: 2020-08-15 03:29:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5d2a2fe868b1944c6e85ab659dc933c6 SHA-1: 3ef81b1944f9ce14c679befacae46094b596c9c1 SHA-256: b8b4c2e2c80923f7813a63988c7abcc3127f8c43c62ef8cafb7c45617752d640
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources, a technique often used to inflate search engine rankings or distribute malicious content. One of the primary links, 'https://ttraff.cc/pify?keyword=pancreatic+anatomy+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the same URL and other PDF files hosted on various domains, suggesting a link farm or redirection scheme designed to lead the user to 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=pancreatic+anatomy+pdf In PDF document text
    • http://fimet.bellheirbordercollies.com/uploads/1/3/0/8/130814328/vakosunuvagixom-nagijuguzi-liwunasademoxov.pdfIn PDF document text
    • http://files.dollessence.com/uploads/1/3/1/3/131383629/regovumo-ratifef-nobupe-kutovogafek.pdfIn PDF document text
    • http://files.msdlaroche.com/uploads/1/3/2/3/132302749/nalanowobagurujapo.pdfIn PDF document text
    • http://files.sailingwildhorses.com/uploads/1/3/1/3/131398598/lepogi-tebonajagabuvet-xatosevepidoji-kafadomonubu.pdfIn PDF document text
    • http://files.safe-t-systems.net/uploads/1/3/1/0/131071063/4845330.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/1/0433/0084/7781/files/xixetefevajekowuseke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4790/3644/files/kptcl_recruitment_2020_notification_in_kannada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3096/0549/files/62378097699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7287/9773/files/vlookup_function_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6897/1418/files/encefalopatia_bilirrubina_neonatal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/3172527076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3945/7429/files/kajulaguvekil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4909/0200/files/types_of_malicious_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/psc_bulletin_silver_jubilee.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9911/2095/files/22360252175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/biguzetisofovimizer.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_off000070fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70FB 5196 bytes
SHA-256: 8b1414e6b13e7e14e462afea23e7132c263c62ce9a47364ad59e0e94bd62140e
font_01_sfnt_off0000828e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x828E 9920 bytes
SHA-256: 0fb5e4a421805fdbd82ee72d313b7d73c431775055e23984857bb364a5590a12

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