Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bee41eef71cded6…

MALICIOUS

PDF

66.0 KB Created: 2021-04-25 10:14:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 04cc8937c56845a3545857b5100295b6 SHA-1: e8a002db1d923c4d30ee45ba2387ca83f061151b SHA-256: 2bee41eef71cded6716cfb53383b8ee639b89d6d80c9854576ceca4b4fb3d188
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an external URI, pointing to a suspicious domain. The ClamAV detection and ML classifier also indicate maliciousness. The document body, though heavily obfuscated, appears to be related to a garage door opener manual, suggesting a lure to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://midufefew.ru/strik?utm_term=linear+ld050+garage+door+opener+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4367617/normal_5fcbcbfaf2792.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488329/normal_6042e7a43110a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471253/normal_5feb3ce29ffcf.pdfIn PDF document text
    • http://loveworld.club/netflix_android_not_showing_subtitles6znqp.pdfIn PDF document text
    • http://habercigo.com/33641577501s7tk2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454167/normal_60023c232a83b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377381/normal_6020c8e843a20.pdfIn PDF document text
    • http://fragcups.com/display_action_sheet_swift6oj8s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403118/normal_606549f8b64c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459641/normal_5fee1b1891b3e.pdfIn PDF document text
    • http://midosiw.22web.org/is_let_me_in_on_netflix.pdfIn PDF document text
    • http://beremoter.online/redasosssr8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8dfd47f4-e591-4377-92a3-bdbf91d41e5a.filesusr.com/ugd/a58b01_9de74067af614af9a07dea65ad46f174.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/68068080-4de6-4b8b-a164-fc1bcf4bd7af/57132941036.pdfIn PDF document text
    • https://0df22b04-17ae-4e65-9af8-3af4445b4601.filesusr.com/ugd/71fd01_375d7f68ce284b0d8153962153f7b122.pdf?index=trueIn PDF document text
    • http://galinuv.rf.gd/highlight_on_surface_pro.pdfIn PDF document text
    • http://tixumupugenatum.epizy.com/pejewuje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e460148-9a0f-4fea-9520-85ff4c7a57ec/patedivopubeganufowefi.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC486 5308 bytes
SHA-256: efe3bb8480fd8c6815cb25ecfce8e6fe2b29107223b55b3ad0e80187ce668cdf
font_01_sfnt_off0000d67e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD67E 10188 bytes
SHA-256: 3e304a34fa788e6579980e7bc1d71a129b89c60257e2dc023ae751c658ace5c4

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