Malicious PDF — malware analysis report

Static analysis result for SHA-256 3811afce405e36a5…

MALICIOUS

PDF

76.7 KB Created: 2021-04-24 21:56:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b420ed49b35a402f2eb01724bd119b95 SHA-1: 247e6236d0d09fbdbc74b3310afbf68bd59f2135 SHA-256: 3811afce405e36a523d021534f0e2e4af91a1c713f392e131024de65cd939212
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document that uses a lure related to 'Dominos pizza base types' to disguise an advance-fee scam. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL points to a suspicious domain, likely part of the scam infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/strik?utm_term=dominos+pizza+base+types
    • http://lapiwudoxavov.scienceontheweb.net/92257199636.pdf
    • http://lizixute.iblogger.org/45766900285.pdf
    • http://pobesegu.scienceontheweb.net/simple_arduino_projects_for_beginners.pdf
    • http://pukogika.iblogger.org/gate_fold_template_microsoft_word.pdf
    • http://xomofaki.getenjoyment.net/24948414803.pdf
    • http://fabikaj.iblogger.org/company_letterhead_template_word_2007.pdf
    • https://limezisetuf.weebly.com/uploads/1/3/4/8/134871661/3723560.pdf
    • http://xorabawik.medianewsonline.com/internationalization_in_java.pdf
    • https://mexupapomumag.weebly.com/uploads/1/3/0/7/130775103/d1281ef70a85.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gomakobez/nokojox.pdf
    • https://s3.amazonaws.com/zumomasugipeno/pulsar_150_classic_images.pdf
    • http://vovajixavago.epizy.com/jewewojarutijakokufi.pdf
    • http://bodumenijos.epizy.com/98382295150.pdf
    • http://tujatubaniza.epizy.com/noledizeje.pdf
    • http://kurujabarufuxe.rf.gd/33464681605.pdf
    • http://najepesirezamuz.rf.gd/thank_you_letter_for_answering_my_questions.pdf
    • https://s3.amazonaws.com/varolexexus/breathless_the_corrs_free.pdf
    • https://s3.amazonaws.com/girilifawuxi/83239525660.pdf
    • http://vivapemek.rf.gd/holt_world_history_ancient_civilizations_textbook.pdf
    • http://fajukowopod.epizy.com/jolomafurexeja.pdf
    • https://s3.amazonaws.com/muvarelo/mafepatarixuxukowul.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_off0000ef4d.bin
bd07ee60f6418303b7d7ee2b68929d7fad436f67b388509c9e2e528b57800904		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF4D 5128 bytes
font_01_sfnt_off000100c2.bin
193740f1234657f939969ddc87cfbb1feedcd46ddb03227e01a88fecdb0beb8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100C2 10844 bytes

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