Malicious PDF — malware analysis report

Static analysis result for SHA-256 85a1c8118716986f…

MALICIOUS

PDF

46.1 KB Created: 2020-08-05 10:41:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c6444082d489efe10bb169f8e92bc1a2 SHA-1: 2c793bb64c3e70418c98bbb670b7c904738fe6d8 SHA-256: 85a1c8118716986f871a4e44040ac97bf6bb8f7ca4c1e51ed70e5c1bfbbcc9cc
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service known for malicious activity. The document body and heuristics indicate a lure for 'PDF to word converter' downloads, a common phishing pretext. The embedded links likely lead to further malicious content or malware downloads.

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=pdf+to+word+converter+offline+free+download+filehippo In PDF document text
    • http://files.dreamseedfarms.com/uploads/1/3/0/8/130873822/6421847.pdfIn PDF document text
    • http://files.compelation.co.uk/uploads/1/3/0/7/130776821/fisexapoduvos.pdfIn PDF document text
    • http://mipunifa.kirchner-architects.com/uploads/1/3/0/8/130814238/2391901.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/1/0428/0070/9791/files/muwusiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8790/4422/files/kujeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2529/9606/files/5486749350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7729/6543/files/30796611073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3420/5590/files/lawodenejobipabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5564/4823/files/xabalamupowiwikifitol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3523/8301/files/kiwawixojikopizarejazixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9800/3874/files/rezagaxunizifil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2799/6565/files/katurusolutusifebipabora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0115/1651/files/75540824132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6958/8135/files/old_forge_trail_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5872/5018/files/zatez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/tidowezunitafafefozexeri.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_off0000758d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x758D 5220 bytes
SHA-256: 0b21880f09fac21af8040ffe271c59d9626cb2cf3f8609f380a87ec036781e44
font_01_sfnt_off00008762.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8762 10372 bytes
SHA-256: 37cfe0303d5a540f5a5b9c272069980360256652891483e212986aaef84b6699

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