Malicious PDF — malware analysis report

Static analysis result for SHA-256 d12d0f6d9a4ee2ec…

MALICIOUS

PDF

55.7 KB Created: 2020-08-29 19:30:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d941ffb7bf7e2ed87ecf4ae810e625e8 SHA-1: 6a9ead626835584c7e3afbd27c9d57ecc5a2f636 SHA-256: d12d0f6d9a4ee2ecf4d952e00b0dbad676a5fa79b83ca9498447956400132db5
152 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, pointing to 'https://ttraff.ru/wix?keyword=wwe+supershow+resultados'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one leading to a Shopify domain. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL and link farm structure suggest a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/wix?keyword=wwe+supershow+resultados
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85947343199.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7764/files/zigufesakurufonexa.pdf
    • https://cdn.shopify.com/s/files/1/0432/0398/5570/files/jojepisekiteb.pdf
    • https://cdn.shopify.com/s/files/1/0430/8716/7645/files/biceps_workout_with_dumbbells_videos.pdf
    • https://cdn.shopify.com/s/files/1/0428/8859/3567/files/diremaxuvabonemami.pdf
    • https://static.usrfiles.com/ugd/b8c837_45a7289066404131857ee4b4a092155d.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mizamolapo.pdf
    • https://cdn.shopify.com/s/files/1/0435/6354/8833/files/64506073465.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejupabofutub.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/84879761578.pdf
    • https://cdn.shopify.com/s/files/1/0434/5469/3529/files/dezoxonizubugod.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009dac.bin
dfee24e2baac61f928b807fdd15fb1056d47788d1225393ec7ae906b83cc1d56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DAC 5152 bytes
font_01_sfnt_off0000af42.bin
d0665a8519c2fbcc08eccff9c945991eb1824a9933f3863cb28ac5a6eb7733bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF42 10304 bytes

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