Malicious PDF — malware analysis report

Static analysis result for SHA-256 54729e594a04be6e…

MALICIOUS

PDF

71.8 KB Created: 2021-03-14 12:28:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb0c3ab0c6bba5aa0e0f0fc367457cde SHA-1: 7cc8b3ee36be66031c11c642f37efa485601d21c SHA-256: 54729e594a04be6e25545c12c1f193486e30d12d76255fc20079093dd2daa067
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as 'Pdf.Phishing.Trojan'. The embedded URL, 'https://resalured.ru/123?utm_term=aladdin+cartoon+movie++mp4', is suspicious and likely serves as a lure or a redirect to a malicious site. Although no scripts were explicitly extracted, the nature of the detection and the embedded URL suggest a phishing or trojan delivery attempt.

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://resalured.ru/123?utm_term=aladdin+cartoon+movie++mp4
    • https://cdn-cms.f-static.net/uploads/4498992/normal_5fd1eb49b1e31.pdf
    • https://static.s123-cdn-static.com/uploads/4365540/normal_5fe2d36f2bfae.pdf
    • https://cdn-cms.f-static.net/uploads/4446147/normal_5fd7a8873d380.pdf
    • https://cdn-cms.f-static.net/uploads/4480382/normal_6009e77331994.pdf
    • https://static.s123-cdn-static.com/uploads/4411918/normal_5fcc36271e57f.pdf
    • https://cdn-cms.f-static.net/uploads/4452624/normal_60468f7842c86.pdf
    • https://static.s123-cdn-static.com/uploads/4372719/normal_5feeb3f23d730.pdf
    • https://static.s123-cdn-static.com/uploads/4424405/normal_5fccd6eb7b85b.pdf
    • https://cdn-cms.f-static.net/uploads/4496577/normal_60314b9b5d7df.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kavugusepe/background_black_app.pdf
    • https://s3.amazonaws.com/wizitifowubux/rorulizerotil.pdf
    • https://uploads.strikinglycdn.com/files/98bac6c5-b429-40d0-b254-a96e434899c9/12807569102.pdf
    • https://uploads.strikinglycdn.com/files/62da21b1-409c-426d-afcd-358526e26e10/tatenojojog.pdf
    • https://uploads.strikinglycdn.com/files/2b5a9756-3bf7-4d69-88e2-712741edaa6a/garimo.pdf
    • https://s3.amazonaws.com/jezaxojipevu/kavazolazas.pdf
    • https://uploads.strikinglycdn.com/files/80b3eb72-1f9b-457d-a488-9ae5496194aa/rezuxijoxapafazob.pdf
    • https://uploads.strikinglycdn.com/files/1bd7e4e1-cce6-4b01-9b10-4096ef8bde73/pokatebirizimopujigogas.pdf
    • https://uploads.strikinglycdn.com/files/c7e01b90-8eb3-4a02-9a5a-f4e2c75afc4d/fujazuzesipikugalerir.pdf
    • https://uploads.strikinglycdn.com/files/639bf5ab-4169-4435-8ba0-20b5041abb61/5459199800.pdf
    • https://uploads.strikinglycdn.com/files/d8c2fe79-f09b-45b3-ab32-b727b10d4f6d/what_is_the_passing_score_for_cfa_level_1.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_off0000dae8.bin
73c9bf1a1ab1e0c2581a5da24f14718d399b736cca84adadf8d4d5b1bdf978c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE8 5176 bytes
font_01_sfnt_off0000ec7c.bin
18d32b32c056353e31b017cc7450ebd70e3d7c4954d25096895b7669bd3b403f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7C 11040 bytes

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