Malicious PDF — malware analysis report

Static analysis result for SHA-256 6858fa732cfc0910…

MALICIOUS

PDF

78.5 KB Created: 2021-05-08 22:42:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: af3a64a9d3b080e05c954b3dc81e3672 SHA-1: 5eb45be3d25bf0be28d36e0a845e4ae0d44c498e SHA-256: 6858fa732cfc0910a381cf6b532a461bdcd811e31153dece72faba8cb1736afe
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL and document body suggest a lure related to 'Company of Heroes cheat mod 1.0', directing users to a suspicious domain. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/strik?utm_term=company+of+heroes+cheat+mod+1.0 PDF link annotation
    • https://cdn.sqhk.co/madumubo/dEu07gv/gujalukulanosina.pdfIn PDF document text
    • https://cdn.sqhk.co/vogoxaginoje/fIhgjgG/84077976813.pdfIn PDF document text
    • https://cdn.sqhk.co/businaxidare/ihegcgh/bibekopedefilexisiruvet.pdfIn PDF document text
    • https://cdn.sqhk.co/gesuxafom/g4uhheO/xamudaxasireguzomo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500001/normal_60160833981a6.pdfIn PDF document text
    • https://cdn.sqhk.co/mivijigonof/fVjdAca/ruzezuxawavot.pdfIn PDF document text
    • https://cdn.sqhk.co/pikukafil/ihjhggX/83560837711.pdfIn PDF document text
    • https://cdn.sqhk.co/vuluzazogur/poDhez1/word_problem_solver_free.pdfIn PDF document text
    • https://cdn.sqhk.co/jopogoxom/jgidGjf/ccna_security_study_guide_210-_260.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418987/normal_603cfa8ae30f8.pdfIn PDF document text
    • https://cdn.sqhk.co/kizulajeli/yjeAxyC/gudakimeliwuleluluziz.pdfIn PDF document text
    • https://cdn.sqhk.co/timadupak/TNiajeo/monster_evolution_clicker.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451567/normal_60379f5835e5f.pdfIn PDF document text
    • http://taxilozevuj.iblogger.org/cessna_caravan_training_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/fijajiles/TECCBQT/jenijisup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xavapofe.epizy.com/zunepabudopifurarogiviw.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/transition_after_effect.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/73995269144.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/39258191525.pdfIn PDF document text
    • http://dexupanuwobazab.rf.gd/reformed_baptist_church_west_virginia.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/google_account_manager_7._0_apk_free.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_off0000f3c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C9 5596 bytes
SHA-256: 839e62cea628fc529dd7e209c10b27ba5f5be53c1303138d13baad63731eb15a
font_01_sfnt_off000106b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106B9 11144 bytes
SHA-256: db6c1976cbc277794afd9e559b9ee6322c0848848bc6a00c6678fb3c3cbfad69

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