Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ea2b85cbea3ae08…

MALICIOUS

PDF

40.9 KB Created: 2020-08-14 16:09:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 28ed6ee72f35d6b77bd382ac891c97b8 SHA-1: 09637f471f7cb5ac95592404cef8d5f678a06a45 SHA-256: 5ea2b85cbea3ae082d35b413413ea13ee8f49b852de7fde1472918223a0d9cbf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a high number of embedded links, many pointing to a redirector URL (https://ttraff.ru/pify?keyword=most+unanswered+questions+funny), indicating a link farm or SEO manipulation tactic. The ML classifier also flagged this PDF as malicious. The presence of embedded URLs and the overall structure suggest an attempt to redirect users to malicious content, likely for phishing or malware distribution.

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=most+unanswered+questions+funny In PDF document text
    • http://files.marrickme.com/uploads/1/3/1/3/131398432/b56fb000f3abd8.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/1/0428/9832/5663/files/xujolikezopusarafibukugej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4519/9784/files/6333497151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1896/0545/files/petovutonenazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9961/1553/files/manejo_asfixia_perinatal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0145/4500/files/88228139644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4452/7511/files/99895401282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7047/9766/files/whatsapp_for_laptop_windows_8._1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9224/5656/files/autoestima_libro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3404/8669/files/sutodolosegazemasofo.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 2

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_off000060e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E8 5196 bytes
SHA-256: 3bd0f6c25c5b21f2bb8086fcc2e60ebcca1ceda7663e251c6839a92aa20e3965
font_01_sfnt_off000072c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C0 10904 bytes
SHA-256: 3b159bc2d877ea5df18cfc5fd4c16eb303fb7264e0ecd792604f54c45ed2990d

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