Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4d297ba2e6ff897…

MALICIOUS

PDF

48.8 KB Created: 2020-07-19 10:28:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 656f210b01d31d6c481d3ba59bbe5c89 SHA-1: b81304c643df601254bda8d5bee2a9952ed55740 SHA-256: f4d297ba2e6ff89775e2960ae00b04fa0ed2c16fccffe8efd2b90e684d5f489e
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=reduce+pdf+size+acrobat+standard+dc', which is likely used to redirect users to further malicious content. The document body, though heavily obfuscated, contains text related to PDF size reduction, suggesting a social engineering lure.

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=reduce+pdf+size+acrobat+standard+dc In PDF document text
    • http://files.marvinehowe.com/uploads/1/3/0/7/130775396/gogisosawa.pdfIn PDF document text
    • http://files.winniegivot.com/uploads/1/3/1/8/131871556/35eb18c54d63060.pdfIn PDF document text
    • http://files.thesavvywineshopper.com/uploads/1/3/1/6/131636689/lixevukepe.pdfIn PDF document text
    • http://files.robertsgreenhouse.net/uploads/1/3/1/0/131070035/vukaxalik.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/1/0428/9835/8432/files/98559129476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5427/5479/files/nowoxalexetozodowusevimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9641/6160/files/79527381817.pdfIn PDF document text
    • https://mozujunovuj.files.wordpress.com/2020/06/71795939425.pdfIn PDF document text
    • https://funiwakux.files.wordpress.com/2020/07/tazagi.pdfIn PDF document text
    • https://sofuvono.files.wordpress.com/2020/06/64462339740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/35259235687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7259/4844/files/59186710983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5005/0460/files/wumanidowol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/domodapugekopag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5842/files/zorenajetizuxeriz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7314/2935/files/wobomasugarupuwavoget.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5539/0630/files/71407137184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6054/3138/files/52189854610.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_off00008230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8230 5196 bytes
SHA-256: 23eb4b1d1cd04a15768178d2547c8639e3419d0f41aaabd1444f0465bd4c4c8b
font_01_sfnt_off000093e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93E8 9888 bytes
SHA-256: 1f2759d07966f9141329a329ce2e21d48e694b8047664e0d23aada2e10473364

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