Malicious PDF — malware analysis report

Static analysis result for SHA-256 88ee3029df4d77cd…

MALICIOUS

PDF

70.3 KB Created: 2021-02-24 22:49:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 174e5c62bbcf0642881064a20f6cb051 SHA-1: bee58314669ae6be7ccad2475cf2c0162cc6acb9 SHA-256: 88ee3029df4d77cddfa6d80ec695c493e453fe7eaef3d1c8817fc18b4fdf865f
116 Risk Score

Malware Insights

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

This PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it is a callback phishing lure, prompting the user to call a phone number. The document contains an embedded URI pointing to a suspicious domain, likely used to host malicious content or facilitate the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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=hibachi+table+restaurant PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4414175/normal_5fd2cf3393ec0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383687/normal_5fdfc61e2558f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372721/normal_5fed0c345ab8d.pdfIn PDF document text
    • https://cdn.sqhk.co/deloreba/hfSljhg/swiss_ice_hockey_cup_auslosung_1_4_final.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425009/normal_601e0c852c313.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/fomudebipefasu/apache_air_assault_game_free.pdfIn PDF document text
    • http://tixelupaninaber.rf.gd/what_are_the_types_of_data_structures_available_in_pandas.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/tavanonufanolovalidomipe.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/arris_sbg8300_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/bikekes.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/60702699797.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_off0000d7ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7BA 4988 bytes
SHA-256: 769d5f2dfefdd24e3e1385afc743203ef04a1a5056d396172ca1150894a46765
font_01_sfnt_off0000e89f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE89F 10552 bytes
SHA-256: 3ba8e68b86e4b96fed062cb70b529e8b8603a0a33932a8d0cea2847d1a9778d8

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