Malicious PDF — malware analysis report

Static analysis result for SHA-256 071cd349b68d97c6…

MALICIOUS

PDF

76.7 KB Created: 2021-03-14 14:55:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d22fd1519c62680ca3f1b27522a8da4a SHA-1: dbf3694fdeb05a1e5bbd9f3299e2dcf048da922d SHA-256: 071cd349b68d97c69fe99e457b7594de3cae3c6b775395d789b38de93fcacf4a
96 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'https://zajinet.ru/wix?keyword=devil+costume+ideas', which is likely used to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'Devil costume ideas'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly indicate a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=devil+costume+ideas
    • https://cdn.sqhk.co/sobupepokor/tSjh9za/78508188166.pdf
    • http://volosaty100.xyz/25770032599f5emf.pdf
    • http://raifaisentgo.online/bibinekenimapoxavomedcachw.pdf
    • https://static.s123-cdn-static.com/uploads/4417413/normal_5ff31eb4b68b8.pdf
    • https://cdn-cms.f-static.net/uploads/4418171/normal_604d94b226072.pdf
    • http://wudazex.sportsontheweb.net/wofisapipifupikoguxa.pdf
    • http://lorakuze.sportsontheweb.net/us_billionaires_got_richer_during_pandemic.pdf
    • https://cdn.sqhk.co/nuvurero/jhhbiew/34909245823.pdf
    • https://static.s123-cdn-static.com/uploads/4457005/normal_5fc88a07abd84.pdf
    • https://static.s123-cdn-static.com/uploads/4487897/normal_5fefecdf399ff.pdf
    • https://cdn.sqhk.co/dukasavubu/fcXifhb/wafezotivazaxunexuzeledol.pdf
    • https://cdn.sqhk.co/niminililez/igihaDx/41041347350.pdf
    • http://ecosbor.net/why_is_my_computer_not_charging_when_plugged_inshzom.pdf
    • http://topcreditreport.info/mary_poppins_jr_scriptk5xet.pdf
    • http://mediaverifiedbadge.com/bolens_push_mower_with_baggerzz77i.pdf
    • https://cdn.sqhk.co/polidupokasu/wdpa0jb/58393002914.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/rivazixexuguri/setipipifaxadereburi.pdf
    • https://s3.amazonaws.com/jolunenafobuw/76025565407.pdf
    • https://f55c6975-0091-4942-a106-dc80285e5f9d.filesusr.com/ugd/8a4248_b1f9f15010274258894158e7802adbe3.pdf?index=true
    • https://df9240ce-57b4-430e-a582-521170ca5232.filesusr.com/ugd/10b03a_bbeb4be7dbdb4afc84c03a2f266b474f.pdf?index=true
    • https://c370dac7-4848-4fa0-a6df-94361299e8ba.filesusr.com/ugd/fa6303_6bde3278188a446ab910439839804f2e.pdf?index=true
    • https://s3.amazonaws.com/pipaneku/bumozuxupopefanukiron.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_off0000ee35.bin
f3d4fbd5a06d48991f540c71704bdc19f04984c3d1e5babc856171ac0e794abf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE35 5048 bytes
font_01_sfnt_off0000ff59.bin
663c704eb7a3145a713822fb3abc14df2df19d87b1a47fe07e08d609a8b792b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF59 11204 bytes

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