Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ad8dfcb14df69e4…

MALICIOUS

PDF

48.8 KB Created: 2020-08-08 11:41:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d36043d1210419ed0665baba8dd022ef SHA-1: 16f563959ef33a344e6b84b82741baa902ac2fe0 SHA-256: 3ad8dfcb14df69e4c73e4d9b2af95b7f780dc11c637f8d97ff80d6870aba3f7d
194 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious URL, disguised as a free car repair manual. This is further supported by heuristics indicating a malicious redirector and a link farm. The ML classifier also strongly flagged this PDF as malicious. The embedded URL is reconstructed as 'https://ttraff.cc/pify?keyword=car+repair+manuals+free+pdf'.

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=car+repair+manuals+free+pdf In PDF document text
    • http://files.millerstaxidermy.net/uploads/1/3/0/8/130874489/mixosu.pdfIn PDF document text
    • http://files.bsinkaty.com/uploads/1/3/0/7/130775916/bb4f3efb4e9a00.pdfIn PDF document text
    • http://files.theyintercept.com.au/uploads/1/3/2/7/132740204/8147562.pdfIn PDF document text
    • http://files.sgionet.com/uploads/1/3/0/8/130874413/zujojunejiguwimurob.pdfIn PDF document text
    • http://xinewib.elisabethlagrone.com/uploads/1/3/1/8/131871478/fbf8e949234b.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/1/0428/7230/7875/files/28319481241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3260/7900/files/73454614493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97285982277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0594/9590/files/xezesupibeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5171/8558/files/bevifug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5425/1670/files/45998102543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6074/8695/files/vabijudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3961/3347/files/ketogenic_diet_recipes_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5382/5704/files/jekosijunije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9113/2567/files/47235144539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6655/5556/files/basic_electrical_engineering_textbook_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/73895914011.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_off00008189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8189 5092 bytes
SHA-256: e30371e50c787786bcf0100f823416fa614ec3c1e26c7e367d6773d85c10dd00
font_01_sfnt_off000092c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92C0 10340 bytes
SHA-256: c595124c3f990de1fb2bdcfd60ed3e457d5e79a3105f7ad8ddcfc923aad321a4

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