Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d44b0d99a32a813…

MALICIOUS

PDF

85.6 KB Created: 2020-07-31 09:08:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c65d8d29d3365231e4fb99770a69cd02 SHA-1: a1eb5008d97d244dadc04525b76093390fb1bafc SHA-256: 2d44b0d99a32a8132adb25951b9886bb90d259c596225b7aee7e1019e53a327e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF contains a link farm pointing to numerous PDFs hosted on Shopify, with one specific URL leading to known malicious redirector infrastructure. This suggests a campaign to distribute malicious content or phish users. The ML classifier strongly supports the malicious verdict.

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=introduction+to+christian+apologetics+pdf In PDF document text
    • http://files.pianobymelody.com/uploads/1/3/0/8/130874317/pikalujo_lepedexuser.pdfIn PDF document text
    • http://files.jonathanwilliamsonphotography.com/uploads/1/3/1/4/131482915/nupekufumaf_dapurav_fadera.pdfIn PDF document text
    • http://files.mypittsburgchamber.org/uploads/1/3/1/3/131379732/vipot.pdfIn PDF document text
    • http://files.loganshappyrocks.com/uploads/1/3/1/4/131406735/tepujaguz.pdfIn PDF document text
    • http://files.mybigbrotherbobby.com/uploads/1/3/0/8/130874608/gepometij_pusukodajo_puzevonejaka_labalubem.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/1/0431/9051/7917/files/82856398267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4253/6604/files/9183061109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8942/0695/files/pagubaropomapopozigegenup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8330/0005/files/goresutina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1047/3633/files/91017739795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mulobovapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5323/3814/files/55094019132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3716/9576/files/miwuvomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/84016243234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/gozuzilob.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_off000113e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113E9 5236 bytes
SHA-256: e268cbd34ffc58f0425270ac93b077a623432566853fd3d1d9653df1c7155396
font_01_sfnt_off000125af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125AF 10336 bytes
SHA-256: 8ccc1b8d12175313ec26b216ef93a5c56edde2878b85347cd3a1003a86192af5

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