Malicious PDF — malware analysis report

Static analysis result for SHA-256 d622723a4de2d707…

MALICIOUS

PDF

186.1 KB Created: 2021-01-23 13:14:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 2d862c804c238877d349e7b3a37dcb5c SHA-1: 82cb48b0cbc3db44fad3e68db9cce5bdad3e37cd SHA-256: d622723a4de2d70776499aa57184b1bfb58b505bfd97c7595a0511ebcda5a707
116 Risk Score

Malware Insights

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

The file is a PDF that was flagged by multiple heuristics as malicious, including a ClamAV detection for Pdf.Phishing.Trojan. The 'SE_CALLBACK_LURE' heuristic indicates the document is designed to trick users into calling a phone number, a common tactic in tech-support scams and callback phishing. The embedded URL 'https://traffnew.ru/aws?utm_term=curious+george+season+1' is likely part of this malicious infrastructure.

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://traffnew.ru/aws?utm_term=curious+george+season+1 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4499351/normal_5ff66fe088d38.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379971/normal_5fd09b7eda9c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417206/normal_600afcfe60298.pdfIn PDF document text
    • https://cdn.sqhk.co/gudijupimeb/hjj68ga/sewemoveratadasaxojog.pdfIn PDF document text
    • https://bikigevoxepasi.weebly.com/uploads/1/3/4/7/134716722/9713788.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451555/normal_5ff90d4ef1d27.pdfIn PDF document text
    • https://tulidakavixesa.weebly.com/uploads/1/3/5/3/135347336/nasorefubi_setomofefetir.pdfIn PDF document text
    • https://cdn.sqhk.co/zisuxemop/hbDigz2/space_rocket_first_stage_landing_simulator_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388412/normal_5fffc50175fef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495393/normal_5fcb7305e9780.pdfIn PDF document text
    • https://dawasaga.weebly.com/uploads/1/3/0/9/130969366/xipidorujil.pdfIn PDF document text
    • https://cdn.sqhk.co/kevejonob/KYRthi2/7682799659.pdfIn PDF document text
    • https://zutiwemozebej.weebly.com/uploads/1/3/2/7/132712207/rudeto-gigigudiwutiw.pdfIn PDF document text
    • https://cdn.sqhk.co/gonaxetuped/XTMrRTA/hitman_sniper_game_free_download_full_version.pdfIn PDF document text
    • https://cdn.sqhk.co/nedupugifuka/kij89hj/instrumental_beats_2019_download.pdfIn PDF document text
    • https://nofuzibid.weebly.com/uploads/1/3/1/4/131453406/3727243.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/sorogamat/law_degree_complete_university_guide.pdfIn PDF document text
    • http://niworojuxine.rf.gd/bulbasaur_evolved_form.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/malphite_mid_guide_s9.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/87117423809.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_off0002a183.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A183 4780 bytes
SHA-256: 08b4bc1923170463e2fe03aa82d4a1328752ae5ba6c2f858ca503ac21b77cf6b
font_01_sfnt_off0002b1d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B1D5 12184 bytes
SHA-256: b3e748f2d535b6a8242c2bd4f2b4f1e8e674956d15406a88bbd62cbfc8514a04

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