Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7ac5a2c5df4e3a0…

MALICIOUS

PDF

69.2 KB Created: 2021-03-24 03:28:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 204e0ea3433655744def54b5faa036af SHA-1: d5b8116899d537199a154a57f3e50b22ffd0f95a SHA-256: f7ac5a2c5df4e3a0ffeaed6af3d30db0a729aec83b6192f88b9b5f86a476322e
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that redirects to a phishing page, disguised as a manual for a Fisher-Price toy. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lead the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://zajinet.ru/wix?keyword=fisher+price+elephant+swing+manual
    • https://xukotonaxi.weebly.com/uploads/1/3/1/4/131453431/49accdab733f.pdf
    • https://popaxeras.weebly.com/uploads/1/3/0/8/130814769/6792305.pdf
    • https://somubafe.weebly.com/uploads/1/3/4/4/134444697/milokixivevoweludi.pdf
    • https://cdn-cms.f-static.net/uploads/4375541/normal_6055f82a1c77e.pdf
    • http://prizinsta.site/what_is_the_best_alexa_speaker_for_music5fmpl.pdf
    • https://petodudugagakot.weebly.com/uploads/1/3/4/6/134640630/verikobomavovuwemo.pdf
    • https://static.s123-cdn-static.com/uploads/4420602/normal_5fdd3118da88b.pdf
    • http://energytik.net/sepopakyfki0.pdf
    • https://bulugigedi.weebly.com/uploads/1/3/4/7/134714886/293419fbb907.pdf
    • https://menegelobeka.weebly.com/uploads/1/3/4/9/134903334/wegutitokuvikiji.pdf
    • https://cdn-cms.f-static.net/uploads/4379362/normal_602d03b14d066.pdf
    • https://zopiwaseka.weebly.com/uploads/1/3/0/9/130969839/vesogiluwobavog.pdf
    • https://pidoruna.weebly.com/uploads/1/3/5/9/135966994/vugopage_werimuj.pdf
    • https://cdn-cms.f-static.net/uploads/4420767/normal_600b1eaddec05.pdf
    • https://nagalijas.weebly.com/uploads/1/3/1/3/131398542/8288294.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jevelel/weekly_planner_template_with_hours.pdf
    • https://s3.amazonaws.com/memobofilenabon/manual_utilizare_tchibo_cafissimo_classic.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_off0000d320.bin
148bb2ea2558d99ee506becb72ef1bfe84bff46172bd6e7b61de326a6e61ccfd
pdf-font-stream PDF embedded font (sfnt) at offset 0xD320 5396 bytes
font_01_sfnt_off0000e56a.bin
9165a0a448f314627c5dfabf03bfb5198a40833330745aabacb29a823de22707
pdf-font-stream PDF embedded font (sfnt) at offset 0xE56A 9992 bytes