Malicious PDF — malware analysis report

Static analysis result for SHA-256 a26542f480879a39…

MALICIOUS

PDF

43.9 KB Created: 2020-08-19 20:17:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e432b4c05761d115763ea267b2f7e5fc SHA-1: 3468d701115975262df3bc1d10cfab433ef97428 SHA-256: a26542f480879a39fb5dcf925d0c4fc306cb12a1af72107bbee3c7cf1728ecd7
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing indicating these links point to known malicious redirector infrastructure. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=wowhead+attunement+guide'. The document body, though heavily obfuscated, also contains this URL and other PDF links, suggesting a link farm or redirection scheme designed to lead users to malicious content. No scripts were extracted, and the PDF structure itself is the primary vector for the attack.

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=wowhead+attunement+guide In PDF document text
    • http://vejenu.checklistinspections.com/uploads/1/3/1/3/131379578/jasil-zowedage-xojosufomejikeg.pdfIn PDF document text
    • http://files.wafflehousecatering.com/uploads/1/3/1/4/131483317/f29dee0.pdfIn PDF document text
    • http://xilekiw.chantelcherisselucier.com/uploads/1/3/1/8/131857152/mepekodujebejaza.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/1/0437/2656/9633/files/basic_civil_engineering_bhavikatti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/fuvovidazuzezafev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/memu_emulator_for_low_end_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5341/5576/files/alteraciones_cognitivas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9287/7217/files/89632343024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0198/4662/files/zabitape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4405/9806/files/rujakurisumekesonuvuviw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/8876/0232/files/interview_skills_and_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27347714529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4975/2478/files/abbyy_transformer_12_crack.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 3

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_off00007117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7117 5040 bytes
SHA-256: 492cf8ca9d9bde82a820e18a665a480d407008cf1cb606ab9d5182ed708a339d
font_01_sfnt_off00008228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8228 9660 bytes
SHA-256: b0579db05ace01ee8f76225e629787ed0119c51df3e3ae30fa10338f8981f5de

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