Malicious PDF — malware analysis report

Static analysis result for SHA-256 6694b9b37af39ab7…

MALICIOUS

PDF

442.4 KB Created: 2020-08-13 01:52:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61eac57fdf1502d06ef5f8e138ffeb41 SHA-1: 312027ee39b0af347fc85bbb5e60fcede3c8c86b SHA-256: 6694b9b37af39ab7ffc0da9b0ae1e91d005a80e4cf1e0c9a9856cbaa737b1767
142 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it is a malicious redirector and uses urgency and advance-fee scam lures. The embedded URL, https://ttraff.ru/pify?keyword=cancer+book+pdf+download, is flagged as a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and malicious URL suggest an attempt to redirect the user to a phishing or scam page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9902

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/pify?keyword=cancer+book+pdf+download
    • http://files.lowcountryliberals.com/uploads/1/3/1/4/131483009/rubinumu.pdf
    • http://xegofozik.mathewaldred.com/uploads/1/3/0/9/130969742/bedfc08.pdf
    • http://files.newageofheroes.com/uploads/1/3/2/7/132740553/7320249.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30553092986.pdf
    • https://cdn.shopify.com/s/files/1/0437/2522/6152/files/64695391513.pdf
    • https://cdn.shopify.com/s/files/1/0430/7854/9665/files/fujonamuz.pdf
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/26381135559.pdf
    • https://cdn.shopify.com/s/files/1/0432/2879/0946/files/24595444402.pdf
    • https://cdn.shopify.com/s/files/1/0445/6490/6148/files/class_12_integration_all_formula.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1402562920.pdf
    • https://cdn.shopify.com/s/files/1/0429/3646/7612/files/527383692.pdf
    • https://cdn.shopify.com/s/files/1/0440/9124/4696/files/94881060163.pdf
    • https://cdn.shopify.com/s/files/1/0427/4677/3660/files/jurabixekewubu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8779/7160/files/44581915956.pdf
    • https://cdn.shopify.com/s/files/1/0434/9349/0838/files/92002358097.pdf
    • https://cdn.shopify.com/s/files/1/0432/1089/9624/files/lonaborerezidegiganed.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_off00069778.bin
5a1300d1ed152a400b8802e877399551a2309f0c7783fa1859c90c1f6d10e62d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69778 5172 bytes
font_01_sfnt_off0006a927.bin
aef29e57f40b68b235b44446d3fee6bc470908d694ed5d50888f4d2538f18fd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A927 15692 bytes

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