Malicious PDF — malware analysis report

Static analysis result for SHA-256 f67dcfe13c5685e6…

MALICIOUS

PDF

40.8 KB Created: 2020-08-10 21:43:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fea6f1f2dffd3f31a19807f247735c7a SHA-1: aea5b2e3ee14973ada545293a8682c5a44385c21 SHA-256: f67dcfe13c5685e68ce1f5ea9f6f754f3e6127901f0a631685572c4073f14111
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=biological+evolution+of+man+pdf, which is likely used to redirect users to further malicious content. The document body and embedded links suggest a lure to download a PDF, which is a common tactic for phishing or malware delivery.

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.ru/pify?keyword=biological+evolution+of+man+pdf In PDF document text
    • http://files.ethanallenrattery.com/uploads/1/3/0/8/130874238/7771840.pdfIn PDF document text
    • http://files.certioradvisors.com/uploads/1/3/0/7/130738993/totapegasamo.pdfIn PDF document text
    • http://files.jeffgoldsteinattuner.com/uploads/1/3/0/7/130739809/7003937.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/1/0433/0687/7080/files/bopeberovejaxurid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/56122501412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2634/1278/files/derulozoxuwinufudosiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4848/5535/files/21970033961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8411/8171/files/business_strategy_of_apple.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1758/5308/files/the_sociopath_next_door_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7054/6329/files/97077822165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6640/8603/files/rimuzerumukukupiwoti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3935/0181/files/74510333048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/6976/3747/files/jay_mohr_bert_kreischer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5643/0230/files/zidezukurowuzipevafen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2131/1910/files/mongodb_update_document.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2137/5387/files/kitchen_pro_bread_maker.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 7

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_off00006337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6337 5308 bytes
SHA-256: 6a97719560246bb034c85a23fb07fc8dc7c7c27c9a711a9b9e832fb7526a90ff
font_01_sfnt_off0000753c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x753C 9680 bytes
SHA-256: b3d87507b7329231b7607dfdc603d74e719e7655b3012469f5859412340d3cf5

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