Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a4101fe5c1d9c63…

MALICIOUS

PDF

47.8 KB Created: 2020-08-25 14:02:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2a245810228c6027f7526993a785c9d0 SHA-1: 9b42e631c8528180978f8f41fc26a64a2da86907 SHA-256: 5a4101fe5c1d9c637d552180513c2e5f15010d482b02d00f6915c04d8c5d4f80
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a malicious redirector, specifically designed to lead users to a link farm. The embedded URL 'https://ttraff.cc/pify?keyword=accounting+vocabulary+english+german+pdf' is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to facilitate malicious redirects.

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=accounting+vocabulary+english+german+pdf In PDF document text
    • http://rasup.wisconsinwaterlaw.com/uploads/1/3/1/4/131409236/lijugamukuluduwaw.pdfIn PDF document text
    • http://kanifa.dmcicondoliving.com/uploads/1/3/1/4/131453494/bifeguxeto.pdfIn PDF document text
    • http://files.michelemyoga.com/uploads/1/3/1/4/131454151/lupiwovajijefiwilesa.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/1/0434/2009/0535/files/83688214386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lojuxefututa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4303/5048/files/43106309985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8658/4733/files/63376772506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3635/9326/files/besegowumegozijogemelofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4405/1871/files/33766850585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/1v1_minecraft_servers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7764/0092/files/48980836278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/7165469409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2485/0842/files/patojekelow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6332/7385/files/17501074733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0704/9877/files/92077600724.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_off00007be7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE7 5860 bytes
SHA-256: 5f8dfad2952c5ec3798ed13a7fc4c5c77ebce15a5559ac91459f7ce3777008c4
font_01_sfnt_off00008faa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAA 10088 bytes
SHA-256: cb59074b4da348ac666dfee97f698c7dafba14eaa52955a7d4ba20e4f6756e85

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