Malicious PDF — malware analysis report

Static analysis result for SHA-256 01abec85b4a2678d…

MALICIOUS

PDF

41.1 KB Created: 2020-08-14 05:31:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 741b7070f2365a6cd1a57ad95b6c713f SHA-1: e28a41fadeb847c5b2fe2a846708c132a2ec87f8 SHA-256: 01abec85b4a2678d3e1e3fa411b195cbeea78d03a0066b43a774878d9f902b96
162 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1566.002 Phishing: Spearphishing Link

The PDF contains embedded links, one of which, 'https://ttraff.cc/wb?keyword=finance%20manager%20responsibilities%20pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'finance manager responsibilities pdf' and the URL, suggesting a lure to a malicious site. The presence of numerous other PDF links, many pointing to Shopify, indicates a link farm strategy, likely to improve SEO for malicious content.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/wb?keyword=finance%20manager%20responsibilities%20pdf
    • http://files.stalbertsmissionhospital.org/uploads/1/3/1/6/131637482/1810322.pdf
    • http://files.dentonmccabe.com/uploads/1/3/2/8/132815002/pogadesuvalapaj_jowotesifeb.pdf
    • http://files.tricitymustang.com/uploads/1/3/0/7/130738784/3074642.pdf
    • http://files.ejdilleyphotography.com/uploads/1/3/0/7/130775516/8391029.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3468/1250/files/fapovorisikidiz.pdf
    • https://cdn.shopify.com/s/files/1/0454/7185/8838/files/apologeticum_tertulliano.pdf
    • https://cdn.shopify.com/s/files/1/0431/1865/7697/files/36091587446.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zijuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/0692/6741/files/13735739399.pdf
    • https://cdn.shopify.com/s/files/1/0436/9940/4965/files/5359100146.pdf
    • https://cdn.shopify.com/s/files/1/0434/3100/2269/files/ralitetusewepefikutena.pdf
    • https://cdn.shopify.com/s/files/1/0430/8611/9079/files/pathfinder_rulebook.pdf
    • https://cdn.shopify.com/s/files/1/0440/6237/6101/files/cystic_fibrosis_causes.pdf
    • https://cdn.shopify.com/s/files/1/0432/1751/8751/files/bubexizexil.pdf
    • https://cdn.shopify.com/s/files/1/0429/3004/5084/files/sosisusitegonubivatof.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31052941417.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000606c.bin
6c47b4291515d507c513e4679335bf2d432fd31a8a9fcfa5ee9fa5c3b8ab9677		 pdf-font-stream PDF embedded font (sfnt) at offset 0x606C 5568 bytes
font_01_sfnt_off00007339.bin
2d66f794bc23074d1df64523b3bf34c0368d4bee85fd44f5540e8a49d1c22c11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7339 10664 bytes

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