Malicious PDF — malware analysis report

Static analysis result for SHA-256 397b10f3534c6d4d…

MALICIOUS

PDF

74.8 KB Created: 2021-02-12 01:32:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 90d7bee209065a53bf9bc909d7da5f54 SHA-1: 41fa6772d36d35d5ad0c919fe88e2e2712053783 SHA-256: 397b10f3534c6d4d4a199c130652cfae29527435a15bd695cbeeb994a3950b8e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that directs the user to a suspicious domain, masquerading as a search result for a common query. This indicates a phishing attempt to redirect users to a malicious site. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/wix?keyword=can+bearded+dragons+eat+strawberries+and+raspberries PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454168/normal_60147f87c46e2.pdfIn PDF document text
    • http://normab-id.com/rukovutujixel2wbea.pdfIn PDF document text
    • http://ig-verifiedsbadge.com/mupelogasd1ay.pdfIn PDF document text
    • https://cdn.sqhk.co/gagupibi/rihigjg/giterajinowo.pdfIn PDF document text
    • http://losqutoq.online/mamalaxh5txo.pdfIn PDF document text
    • http://niludop.22web.org/jasufelimuvon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530937/normal_5fcd8ee4bbfd8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385410/normal_5ffad00368f95.pdfIn PDF document text
    • https://cdn.sqhk.co/rozamulev/jQjfgj6/weather_appleton_warrington.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vodupuginotipir.rf.gd/74983892535.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/caida_libre.pdfIn PDF document text
    • http://bezopiwuzalobit.rf.gd/nijivimepo.pdfIn PDF document text
    • http://gofirog.epizy.com/cabala_umbandista.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/chemical_reactions_worksheet_key.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/csir_net_2019_answer_key_career_endeavour.pdfIn PDF document text
    • https://s3.amazonaws.com/nojemi/asterix_and_obelix.pdfIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/jabeginogijejo.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/borderline_madonna_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/fukezodedaga.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_off0000e8d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D2 5232 bytes
SHA-256: cb9044a92bb812f681e3d955c8ecd600d472c46b91c081ecc6e02fefc8924db2
font_01_sfnt_off0000fab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB0 10140 bytes
SHA-256: 469a4b085181f9acf8eff8557a155f79f61f5b565a48a5c67514bf48dbda9d2f

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