Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2f5cfeaf5081d89…

MALICIOUS

PDF

84.2 KB Created: 2021-02-18 06:54:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 879c69dd82c05f2a8e8bea5fcfda40c1 SHA-1: c0fdb0b69257bebcbd31994a4d95f2bab80e9817 SHA-256: e2f5cfeaf5081d890246e69a523f7dcdb5958b8518e4cfc333f8f5c40c40f459
124 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a URL that appears to be a search result for a product manual, suggesting a phishing or social engineering lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest the document is designed to trick the user into downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://seumenha.ru/wix?keyword=samsung+gear+fit+manual PDF link annotation
    • https://cdn.sqhk.co/kujotukil/cBcd3lt/bemaw.pdfIn PDF document text
    • https://cdn.sqhk.co/wularumijif/Xo2gj1o/pukodupomos.pdfIn PDF document text
    • https://cdn.sqhk.co/badaxiloru/hjieicQ/tererop.pdfIn PDF document text
    • https://cdn.sqhk.co/nizaveni/jhhaT0n/gidimewinifa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451932/normal_600f8eef0def4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488316/normal_5fcaa3902c46f.pdfIn PDF document text
    • https://cdn.sqhk.co/razotefo/fYxcOhh/mega_ramp_car_racing_games.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365636/normal_5ff851bb2a4f5.pdfIn PDF document text
    • https://cdn.sqhk.co/naketego/ZMxhhg6/city_sports_shoes_for_sale_in_pune.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495413/normal_5fdfd770f40bc.pdfIn PDF document text
    • https://cdn.sqhk.co/tejilunuf/0hchbeP/dragon_god_demon_s_souls.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408348/normal_600c77796abd6.pdfIn PDF document text
    • https://cdn.sqhk.co/zolewiko/zvhdYhj/beach_buggy_racing_game_download_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473044/normal_5fcf225caa265.pdfIn PDF document text
    • https://cdn.sqhk.co/dolitife/dgeiadr/jiwaterafevina.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450502/normal_6025ed080127c.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/jesidofefe/jakulub.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/duckweed_population_growth_lab_answers.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_off000102c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102C0 5188 bytes
SHA-256: 9be9f123a29cdb21cb8a56b8d0a74174c75507841afb48be3cbf8fa3056b6ffc
font_01_sfnt_off0001144a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1144A 15280 bytes
SHA-256: 5205b21e9137922cbcc4c49d21ec418d150e76dd9f4d915dce4fc3d174f2e877

Open this report in the interactive analyzer, or submit your own file for analysis.