Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2aec8bb9e698e5e…

MALICIOUS

PDF

202.9 KB Created: 2021-02-19 23:13:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7298608db09e97e1a57145090bf9ad30 SHA-1: a918d014b7f0b4f6fac6e16881f7edea447db0a8 SHA-256: c2aec8bb9e698e5e2406076edf188184858f54d1ce84df393a99b1bc7b2a7534
136 Risk Score

Malware Insights

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

The file is identified as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, specifically one pointing to 'bologen.ru', suggests the document is part of a phishing or malware distribution scheme. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document may be designed to trick users into believing they need a password to access an archive, a common tactic to bypass gateway security.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://bologen.ru/wix?keyword=persona+3+mamoru+hayase
    • https://cdn.sqhk.co/dosijowikul/jidjehb/dikawew.pdf
    • https://cdn.sqhk.co/jagibuvat/YihEgc9/souq._com_amazon_global_store.pdf
    • https://cdn.sqhk.co/rifarako/iu2SRCg/32665468438.pdf
    • https://cdn.sqhk.co/jasurisunav/p1c7gf3/extinction_rebellion_london_protest.pdf
    • http://teasmall.space/nusalazatizme59m.pdf
    • https://cdn.sqhk.co/rubuxupab/dhigqje/senior_meals_at_bob_evans.pdf
    • http://richmaya.site/tadomomutafonesopijeku410k.pdf
    • http://helpcenterbusiness.xyz/english_linkers_exercisesnqvtr.pdf
    • https://cdn.sqhk.co/wojipezusax/vicxjfZ/senadutawe.pdf
    • http://timurberg.ru/seventh_day_adventist_exposedyc78o.pdf
    • https://cdn.sqhk.co/redusebi/ghieghi/denon_av_receiver_remote_codes.pdf
    • https://cdn.sqhk.co/pujapipiwat/K1hdieS/45205258399.pdf
    • https://cdn.sqhk.co/nebemina/thcqtDO/k12_online_school_wisconsin_jobs.pdf
    • https://cdn.sqhk.co/kufejagefep/2gcQijh/kovamuvev.pdf
    • http://giocodigital.space/426757118827598f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://valavedazesosik.epizy.com/accounts_receivable_dashboard_excel_template.pdf
    • http://watijosanowo.epizy.com/lusevefobo.pdf
    • http://gojudupawoziwex.epizy.com/63627315969.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000227e9.bin
19db5a1ac0843940767a65e58a38155872160d7873688158bdb0d06766c6c634
pdf-font-stream PDF embedded font (sfnt) at offset 0x227E9 61784 bytes
font_01_sfnt_off0002e138.bin
87aaab43a89d46dc111df2594bea70c8a275dc50dc7eb0f30efc7e3166e35b04
pdf-font-stream PDF embedded font (sfnt) at offset 0x2E138 5160 bytes
font_02_sfnt_off0002f29b.bin
84ac0328d98145ebf768a1cead6ac37252fbdafed06dad3473989f90e3067834
pdf-font-stream PDF embedded font (sfnt) at offset 0x2F29B 12740 bytes