Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ca0b94c1b8b5583…

MALICIOUS

PDF

79.4 KB Created: 2021-03-02 09:24:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 011ef3d1926dbfb922b6bbbfc4e13fd5 SHA-1: 4ced03cddbdc9accf911bb9dcfeaa08dce2a0fd1 SHA-256: 7ca0b94c1b8b55839d78cf4022412e71e6c3077a9bc61850db9d5d93073c410b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, fokemale.ru, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest the document is designed to redirect users to malicious content, potentially for credential harvesting or further malware delivery.

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://fokemale.ru/123?utm_term=romeo+and+juliet+globe+theater+cast PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383571/normal_602794e6e60b0.pdfIn PDF document text
    • http://help-nanny.site/30747008334w9o2i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387420/normal_601abbf83d526.pdfIn PDF document text
    • https://cdn.sqhk.co/kadeposamo/Nie3IUG/56599075324.pdfIn PDF document text
    • http://fredo.bike/deropudamal5d3px.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501383/normal_6028a7bca6cc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454056/normal_600aadcf78fe0.pdfIn PDF document text
    • https://cdn.sqhk.co/tokafumotebi/hoNQHtD/what_started_the_civil_war_in_russia.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451023/normal_602dc5e19c7a3.pdfIn PDF document text
    • https://cdn.sqhk.co/nezerozara/jd8jfil/action_for_2-_4_players.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/bresser_skylux_el_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/67034320962.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/20382469949.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/hbr_data_analytics_basics_for_managers.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/65386130161.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/best_sports_quotes_of_all_time_funny.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/house_cleaning_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/relovubo.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_off0000f9bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9BB 5576 bytes
SHA-256: afd5bd248c906fb5310bfd057892c24a580335f8c57c44c292fb1fda0be2aee0
font_01_sfnt_off00010c86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C86 10580 bytes
SHA-256: 097dd830d1082517a3044abf08298902f9394903e4eb8143be8335c1ebe1f56f

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