Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a76506725c2a77b…

MALICIOUS

PDF

38.5 KB Created: 2020-08-18 17:40:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e37b24f22a378e25f02f89203ffef134 SHA-1: 28022d88706d2574f5bc4d7df0accb440646dd9d SHA-256: 3a76506725c2a77be6a459adcd06e7b9ed43500b9d84e0895d774ce5141fb80b
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lead users to malicious sites. The document also features a large number of external PDF links, many hosted on Shopify, suggesting a link farm for SEO manipulation or to obscure the final malicious destination. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is used for malicious redirection.

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=metro+sports+reporter+job In PDF document text
    • http://files.managingupset.com/uploads/1/3/1/6/131636676/gatifuwakigavatirat.pdfIn PDF document text
    • http://lemub.adriennebrewington.com/uploads/1/3/1/3/131381518/880703.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/1/0433/9430/2117/files/pojawiwajoxefalefenijovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3883/3816/files/segil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/6540/5603/files/commands_used_in_linux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0802/4985/files/mufenanazepuvesufoneb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2435/8308/files/16261181620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9930/7678/files/thaumcraft_golems_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0763/7661/files/sekativetojigezesepapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2816/0420/files/buwojazadimema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/3381937608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/26784824258.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 1

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_off00005883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5883 4792 bytes
SHA-256: a5a315c3201fb3debac255c6e74485e5e7a834f7fa7cc7b688fd7dc5da835f15
font_01_sfnt_off000068eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68EB 10784 bytes
SHA-256: 70b42032fd590a1ec149cf6f66f3404a7e15cfffe93e0efec402db18352fd76d

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