Malicious PDF — malware analysis report

Static analysis result for SHA-256 69c767da625c550c…

MALICIOUS

PDF

71.4 KB Created: 2021-01-04 00:39:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: afdf67c1bd80446cd50f6900174acef5 SHA-1: a4e23b2eddc79512672d58d4f327871f3b29bfac SHA-256: 69c767da625c550c15617cc0afd5bc86f8a2b9d1f5776f778b12309746681367
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure, specifically the URL https://gettraff.ru/123?utm_term=minecraft+item+despawn+time+after+death. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, appears to contain keywords related to Minecraft, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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=minecraft+item+despawn+time+after+death In PDF document text
    • https://cdn.sqhk.co/telivagawu/iiKijee/civil_war_battlefields_north_carolina.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416787/normal_5fea2dfda759b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450145/normal_5fb28628677f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379370/normal_5fcd70f64a4f4.pdfIn PDF document text
    • https://cdn.sqhk.co/xolilipedeko/C04piis/download_game_hovercraft_battle_arena_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/puwetudul/jjfibij/vebelafakex.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/rorives/20111884689.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/pagozujeramovezos.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/boone_county_missouri_probate_court_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/xerezupoladetivalubes.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_off0000d9fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FB 5460 bytes
SHA-256: 2d237a5c81cf269d8501457eeb6f7a25de20332aa411a3bc1e467f371858741d
font_01_sfnt_off0000ec84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC84 10804 bytes
SHA-256: 0783df1b5a3230d6f8cf92c29671b3fa57afb1c8d7755c5d20061584b81508f4

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