Malicious PDF — malware analysis report

Static analysis result for SHA-256 059721e8b1f5f009…

MALICIOUS

PDF

72.7 KB Created: 2021-03-23 11:24:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 6c15ef075ab379143f98f1ad22bacec8 SHA-1: c48b9d848fb1efd3f61d28d892803c6948f5d5e1 SHA-256: 059721e8b1f5f009dbd71affe22f9ed02d575cae069193140342ce6f96fe1204
96 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to a suspicious domain, likely intended to trick the user into clicking it. The document body appears to be obfuscated or corrupted, but the presence of the external URI and the overall malicious verdict strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://zajinet.ru/strik?utm_term=kreepy+krauly+lil%2527+shark+above+ground+pool+cleaner PDF link annotation
    • http://simamopi.22web.org/jiwiburaro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505687/normal_60136055bf029.pdfIn PDF document text
    • http://bapozuwemixad.22web.org/96816417932.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454672/normal_5fd7b31a50d5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488346/normal_603582d5c51e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450042/normal_60445973829ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477379/normal_5fd1902b6ad8e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://guradewididexep.epizy.com/adwords_fundamentals_certification_exam_answers.pdfIn PDF document text
    • https://d992f69e-bc5b-430a-92d7-abfd66d0380b.filesusr.com/ugd/6f7357_d83daa8236e04dcebf9ecf6f61292228.pdf?index=trueIn PDF document text
    • http://digomal.epizy.com/wafifome.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/questions_to_ask_during_premarital_counseling.pdfIn PDF document text
    • https://45dcde1a-aed5-4138-b95e-a0f768a283bf.filesusr.com/ugd/89441e_c097305379ec4436ad6dc320b875c2cf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/jopor.pdfIn PDF document text
    • https://0c17d2ad-06a2-4efd-9128-26148cac6670.filesusr.com/ugd/44320b_85abec6e9fa347049ec739f8ff00bd0a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/68242752471.pdfIn PDF document text
    • https://580b68e3-2104-4118-ae5b-4f285de1c062.filesusr.com/ugd/dad7b5_2391bd9605904e6b857329daab9f398f.pdf?index=trueIn PDF document text
    • http://fopajika.epizy.com/nabuwezapupudunirot.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/banshee_season_4_episode_6.pdfIn PDF document text
    • https://fac30f9c-1bc3-4ff6-ac40-7ced1d2a170b.filesusr.com/ugd/3b7182_64bd4e99c81b4ee78f052c01524f29cc.pdf?index=trueIn 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_off0000dbf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF4 5704 bytes
SHA-256: e44a7c8c4ae7bee7c8ff840f62d65a99f27f4b6e129d77855c7330efbe0a454c
font_01_sfnt_off0000ef6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF6D 11136 bytes
SHA-256: 67b3b3b2d6ca734144fb931db5959b96d2b051bd6841773d0dcd6d6030cd37f2

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