Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e85e353943f489…

MALICIOUS

PDF

36.0 KB Created: 2020-08-11 08:00:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 03b4128b777448ac338f40465404b44e SHA-1: a7ed89f01c0263f09b631754c9aaf8cbac2fe95e SHA-256: e8e85e353943f489ebd4a0bb5b042965d83989648d887f4b2a0fb44dae5d8e88
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a redirector service (ttraff.cc) which is flagged as malicious. The document body also contains numerous links to external PDFs hosted on various domains, suggesting a link farm or SEO poisoning tactic to lure victims. The primary malicious link is https://ttraff.cc/pify?keyword=aerothermodynamics+of+gas+turbine+and+rocket+propulsion+free+pdf, which likely leads to further 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=aerothermodynamics+of+gas+turbine+and+rocket+propulsion+free+pdf In PDF document text
    • http://muzoruva.jovalynne.com/uploads/1/3/1/3/131383483/kuzoxinegefurazovi.pdfIn PDF document text
    • http://kigadused.welcometomurphys.com/uploads/1/3/1/0/131070420/0826b9.pdfIn PDF document text
    • http://files.ocalaqueenofpeace.com/uploads/1/3/1/4/131453429/kitoxabi-rubone-sutavajepaxiz-zugiv.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/1/0428/9835/8432/files/72163988246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3011/7526/files/61157963169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1625/6677/files/wosigupeluwun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5524/2655/files/bujenikuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/xanegukuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/regezazukosuvegipozeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4756/7003/files/technical_director_job_description.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1783/7467/files/vefifogagonixufegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4630/4920/files/poxologoxomalinezujire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0247/8237/files/toefl_examen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4488/1062/files/tinkle_digest_download_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/namarudilewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5042/5753/files/cfit_alar.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 5

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_off00004bc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BC7 5864 bytes
SHA-256: 1673c8e39141504efbddc9833a0767fb5cb8f18c05b7deea5781dd31f56c5d76
font_01_sfnt_off00005f9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9D 10400 bytes
SHA-256: a7d85c45b75c47e4a6fa275a1e77da9f8cf1c3fa8e9600796df5f186f012cb99

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