Malicious PDF — malware analysis report

Static analysis result for SHA-256 872ae0d6759ec541…

MALICIOUS

PDF

78.2 KB Created: 2021-01-27 01:12:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 6b44c2f58d352a227aa11f30686caf45 SHA-1: 6d183cc23245f068653888da5bd34aedcf410ec6 SHA-256: 872ae0d6759ec541f771f84fb50a0c6407c3b62536cc88741325005ac2d5df26
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains heuristics indicating it is a payment redirection lure and a phishing attempt, likely to trick users into compromising their financial details or downloading further malware. The embedded URL https://maypoin.ru/123?utm_term=american+gunsmithing+institute is a primary indicator of this malicious intent. While no scripts were directly extracted, the ML classifier and ClamAV detection strongly suggest malicious behavior, potentially involving exploitation of PDF vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://maypoin.ru/123?utm_term=american+gunsmithing+institute PDF link annotation
    • http://wibofot.22web.org/90894772822.pdfIn PDF document text
    • http://kernig.online/494938090325yimv.pdfIn PDF document text
    • http://ravitidi.22web.org/35719373721.pdfIn PDF document text
    • https://cdn.sqhk.co/busoleva/iaigfgh/ding_ding_stuffed_toy.pdfIn PDF document text
    • http://pifozuvarivin.22web.org/bifogomudaravekopudom.pdfIn PDF document text
    • https://cdn.sqhk.co/jikikavadaja/jfWCniY/drift_classics_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/sirejeforox/dYjfgig/mega_gba_gba_emulator_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ferenekukosazu.epizy.com/free_printable_may_2019_calendar.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/93920293839.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/cambridge_o_level_physics_past_papers.pdfIn PDF document text
    • http://pifutujotot.epizy.com/76997768886.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/29176870982.pdfIn PDF document text
    • https://s3.amazonaws.com/budovewesekaz/78611090769.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B8 5168 bytes
SHA-256: cb2092421b307d28e2e5eec22788fda25b108539c4ae07cef61d82f9c68f5fcb
font_01_sfnt_off00010524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10524 11452 bytes
SHA-256: 19505c397c418cd06cd8a9a8176dae3479f305fc7eccd36b23aaefb6b214bdb7

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