Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d1f667feb0d1658…

MALICIOUS

PDF

42.2 KB Created: 2020-08-26 05:37:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0d481523b2145acba48f6007e460dd9d SHA-1: 4f92cb8bee45803778fd62a7080f1f2fecba928d SHA-256: 5d1f667feb0d16580197cfb560609d2b6451fa88393d0d0534a42f520943e20c
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the redirector, suggesting a phishing or malware distribution lure. The ML classifier strongly flags this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful 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.me/pify?keyword=dometic+ct+thermostat+troubleshootin In PDF document text
    • http://files.drsamanthonyskin.com/uploads/1/3/1/3/131383514/bajepenitaxe.pdfIn PDF document text
    • http://files.familychildcareassoc.com/uploads/1/3/1/3/131380008/zesarofesetome.pdfIn PDF document text
    • http://files.handyvillage.com/uploads/1/3/1/4/131483662/39067632e9f7.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/1/0434/5964/1496/files/bullers_wood_sixth_form_contact.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8294/8506/files/dasijananusanurasuzuwogez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/47276353323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1848/8741/files/linux_nano_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8001/5262/files/roniwaxiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7129/9999/files/numerologia_angelical.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0726/2370/files/acetato_de_sodio_usos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/9963/8184/files/jetewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98223768302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0553/3598/files/ooredoo_tv_user_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2280/3366/files/rosilanawaluwes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1514/2567/files/ragnarok_battle_offline.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_off00006988.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6988 5180 bytes
SHA-256: 035d44f2f08e802801b4993eaf09b284ec8c614b1eec2059e70d9e8b492bc552
font_01_sfnt_off00007afb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFB 9664 bytes
SHA-256: 4193a5be0e5a4227413bdb8a78370d556657b066956dc798bbfaddefbb701e4a

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