Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c2509dba0480a9d…

MALICIOUS

PDF

100.2 KB Created: 2021-01-14 00:10:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 43c7ea6847ebd1fa988c5f03a7c5855a SHA-1: 7817a9b005bb010add2d21bce4b0b549cfc2ca2e SHA-256: 6c2509dba0480a9da541fbd4aecc563fc3522173bb6c9bfa72100cd6c834ba24
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/123?utm_term=benefits+of+prescribed+burning+for+wildlife'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. The ML classifier also strongly flagged this PDF as malicious, supporting the observed malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/123?utm_term=benefits+of+prescribed+burning+for+wildlife In PDF document text
    • https://cdn-cms.f-static.net/uploads/4404990/normal_5fa7fed0d4920.pdfIn PDF document text
    • https://site-1192291.mozfiles.com/files/1192291/magic_tiles_3_piano_games_2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368969/normal_5f8e532738cff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366964/normal_5f8762be5429b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474462/normal_5fda3cf3d5b47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367007/normal_5f917f083e210.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463034/normal_5fd2f21cdc30a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476936/normal_5fa923fc599f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424400/normal_5fb2562bbde4e.pdfIn PDF document text
    • https://site-1172122.mozfiles.com/files/1172122/the_sims_mobile_dinheiro_infinito_para_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469350/normal_5fefd0a434b9e.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/fusopoxipo/logejop.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_off00014cc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CC9 5396 bytes
SHA-256: 4e85424729dd0fededb1a132c2c985fe9b484bb3efb9851708e193731dc0a71e
font_01_sfnt_off00015f4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15F4C 10696 bytes
SHA-256: 3eb9616c461b68f668c6c450c8b35f3e6815651df144970ff4b590964c24a9a0

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