Malicious PDF — malware analysis report

Static analysis result for SHA-256 c04f38b460960394…

MALICIOUS

PDF

42.2 KB Created: 2020-08-21 03:06:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d54be4a16125f7fdb697be3c8ae6c5c2 SHA-1: 75b3b17e6e7e9d33dc8977448491401cc338dd50 SHA-256: c04f38b460960394a9f4ca367db556e530415eb75288ce2727c7845337084923
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text suggesting a lure related to 'birthday card maker software free' and includes the malicious URL. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many of which are hosted on Shopify, likely to obscure the malicious redirector. The ML classifier also strongly flagged this PDF as malicious.

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=birthday+card+maker+software+free In PDF document text
    • http://xalat.kateholland.com.au/uploads/1/3/1/6/131606339/c45c53d47f.pdfIn PDF document text
    • http://tafuz.margatedm.co.uk/uploads/1/3/1/8/131856380/nodafepibuxakoduz.pdfIn PDF document text
    • http://files.mumarch.net/uploads/1/3/0/7/130775126/vukizipovegilak_pazajejum_morutojege.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/1/0431/2222/9397/files/pavutozarufojapoxatif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/18005900447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2400/6823/files/70236616819.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1532/3291/files/12117640953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8625/6030/files/67976915722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1180/8155/files/jilatoxejeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pujofupokutesigitugut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6132/1621/files/census_form_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6531/0374/files/cea_reimbursement_form_2020_18.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_off0000663c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x663C 5536 bytes
SHA-256: f499b33b786afd0580907dd9bc0eeded334de8bfc10956dded0fcaf616ef002e
font_01_sfnt_off00007903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7903 10308 bytes
SHA-256: 8b8f62f87f3a920a01782dad9c21807f94c02bc1bd677b688101a8c9e8464181

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