Malicious PDF — malware analysis report

Static analysis result for SHA-256 4272e9994dd46d82…

MALICIOUS

PDF

40.4 KB Created: 2020-08-23 13:31:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: add9fc22bb3fa0c62ae051fd59edc6e9 SHA-1: 9f0d0bad5fafbe6ccd01d61d7d48ef4b7c21c688 SHA-256: 4272e9994dd46d821a6d44213585328c245fae47181833dbcbe7645797ecfbd2
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text referencing 'Internet explorer 11' and includes the malicious URL, suggesting a lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the malicious destination. No scripts were extracted, but the primary malicious activity appears to be redirecting the user to a harmful site.

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=internet+explorer+11.+0.+96 In PDF document text
    • http://mikawawid.compassengut.com/uploads/1/3/2/7/132712336/5870094.pdfIn PDF document text
    • http://lozawofa.forsan4e.com/uploads/1/3/2/6/132682905/9529427b.pdfIn PDF document text
    • http://files.megfoster.co.uk/uploads/1/3/0/8/130814926/8446976.pdfIn PDF document text
    • http://files.carolinelea.com/uploads/1/3/1/3/131397955/fubaxokirokav.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/1/0433/0687/7080/files/38743570217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3236/0613/files/77286121607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2492/5340/files/77683950388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6245/9544/files/15115408112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/tezaberazoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8370/1151/files/94501830999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9131/2288/files/baxom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6521/1035/files/kaxijozebakosir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/test_z_angielskiego_dla_pocztkujcych.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 6

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_off0000613d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x613D 4964 bytes
SHA-256: 7aa6beec23269c9e8089f0d7b73102a05dc1e8c1447edc542a9eb9794dc24867
font_01_sfnt_off00007233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7233 10124 bytes
SHA-256: f58eb50a534cb504e15e1905a5f4172516439b0994ba177a8c892e306591990c

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