Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3983e834183e829…

MALICIOUS

PDF

430.1 KB Created: 2021-01-31 04:02:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 29c5d41883810497b515b320e2718419 SHA-1: 791fe36b72a59eff8a2929b58be0d708e05b0360 SHA-256: a3983e834183e8290ef85d8c7dd98e72d827e1f4526335e489c66b0df4ffee45
196 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it is a payment redirection lure, aiming to trick users into changing payment details or making fraudulent transactions. The presence of external URIs and ClamAV detection further supports its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to download or redirect to malicious content, likely related to financial fraud.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9253

Heuristics 7

  • 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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/aws?utm_term=melba+copland+college+uniform PDF link annotation
    • http://rusakova.space/happy_fall_break_memeyg3qt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445104/normal_600d2451785cb.pdfIn PDF document text
    • http://voiprormul.xyz/zisujiraguwix02xa7.pdfIn PDF document text
    • https://cdn.sqhk.co/fozozumaj/hQWxig5/funny_stickers_for_snapchat_memes.pdfIn PDF document text
    • http://baykamif.space/95591891995309cm.pdfIn PDF document text
    • https://cdn.sqhk.co/vijukifezu/vjhuhiZ/the_sims_freeplay_cheats_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446497/normal_5fd66372e87e0.pdfIn PDF document text
    • https://sifudalumavobu.weebly.com/uploads/1/3/2/3/132302711/0d232df0b1f8c96.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419430/normal_5feb7a27448e8.pdfIn PDF document text
    • http://tipografiyav.moscow/download_and_install_vpn_virtual_private_network_softwaregsc6y.pdfIn PDF document text
    • https://cdn.sqhk.co/bajilevone/dF5ibjg/xewomimulufefujotupuvolol.pdfIn PDF document text
    • https://febegivag.weebly.com/uploads/1/3/5/3/135394932/e6bdb6a4.pdfIn PDF document text
    • http://kamaz-ftc.com/8_ball_pool_hack_ios_2020_downloadhuyrz.pdfIn PDF document text
    • https://xidifapub.weebly.com/uploads/1/3/0/8/130873728/71919.pdfIn PDF document text
    • http://wavasesinile.22web.org/front_page_of_college_project_report.pdfIn PDF document text
    • http://richteam.site/discoveryschool._com_puzzlemaker_answersyhq3q.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375340/normal_60049058f25d5.pdfIn PDF document text
    • http://bodyita.space/vovoguxakidiwag4pad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412905/normal_5ff59e86bfc4f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedukiz.epizy.com/camtasia_studio_7._1._1.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_off00066bfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66BFE 5444 bytes
SHA-256: 28529076b9aff17b7285da50f922920423a1c84c4797ec72230af212c78caf9d
font_01_sfnt_off00067e76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67E76 12628 bytes
SHA-256: 4f828dcd5a0f56d3f051911171e5b7752c73801c2ff46a819794c5306ba19395

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