Malicious PDF — malware analysis report

Static analysis result for SHA-256 10d46d3d1dd57519…

MALICIOUS

PDF

63.6 KB Created: 2020-08-06 19:35:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e86f4a97c4582a65e9c1c27fa89605ad SHA-1: c7d4c9040b64d88148be57ef6891d110b5d40f44 SHA-256: 10d46d3d1dd5751939886ecd7537d0790564b53d54775e0c671bc8587c7c8ed9
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as legitimate resources, but the primary link redirects to a known malicious redirector. This indicates a phishing or malware distribution attempt, likely using the "free PDF" lure to entice users. The ML classifier strongly supports the malicious nature of this document.

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.com/pify?keyword=psychological+testing+and+assessment+cohen+7th+edition+free+pdf In PDF document text
    • http://files.karoliina-koho.com/uploads/1/3/0/7/130740490/7992481.pdfIn PDF document text
    • http://seteme.laohulonghealth.com/uploads/1/3/1/6/131636612/nobugo.pdfIn PDF document text
    • http://files.badappleorchard.net/uploads/1/3/1/1/131164250/9629095.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/1/0434/0921/1549/files/penufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6578/3958/files/goodwill_valuation_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0956/3034/files/axios_async_await.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8027/8426/files/91085877335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2119/5688/files/sesopite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3611/4076/files/220834824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/25915737323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3015/0309/files/nizusuxotiri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6630/2357/files/35079065773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6356/6755/files/wuxupazonajori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7699/3702/files/makuwet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70282461387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8545/5769/files/bulking_training_plan.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 3

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_off0000b78e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB78E 5752 bytes
SHA-256: 74fd1ead839a59ec13031b14ecfcc73a1ac6cf10c41735a194fa59d16ee7389f
font_01_sfnt_off0000cb0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB0C 10380 bytes
SHA-256: 8df89033a8e405bab614ddb052c298069ae8a5132d72f5d89f3805077ca2d489

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