Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0570052f275ecaf…

MALICIOUS

PDF

75.4 KB Created: 2021-04-24 01:40:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: b7c7ad7a7ffc421b6f021e3cb730b4e0 SHA-1: 20efe34557694187283c3907863dd6f1c2475cc5 SHA-256: c0570052f275ecaf6ce95581e95fde24287eae3741fce447157d1b63abe350d6
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that, when clicked, leads to a phishing site. The document body, though heavily obfuscated, appears to be a lure related to printer password resets. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mezovuduw.ru/strik?utm_term=how+to+reset+hp+deskjet+2600+wifi+password PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4501233/normal_5ffe2223c44b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387939/normal_601b6ca76c6f3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389604/normal_5fde8d11ba4f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493227/normal_60677a2521343.pdfIn PDF document text
    • http://zugemenelil.medianewsonline.com/rukedabusap.pdfIn PDF document text
    • http://ruzamaji.getenjoyment.net/dupematugejowabiweripo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458622/normal_601b7b35ced33.pdfIn PDF document text
    • http://totesol.iblogger.org/boolean_expression_for_logic_gates.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371814/normal_5fc85dcb9ff07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383160/normal_602062c45d3c2.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/xarojapi/gonarugexer.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/kenmore_electric_range_manual_c970.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/96253623585.pdfIn PDF document text
    • https://s3.amazonaws.com/zatasipezeg/sewovebel.pdfIn PDF document text
    • http://rapuzezu.epizy.com/makro_catalogue_2020.pdfIn PDF document text
    • http://rupilozomu.epizy.com/laporan_pendahuluan_fistula_ani.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/vavof.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/what_is_1_of_1000.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_off0000e931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE931 5716 bytes
SHA-256: 204ab3408c9e5737ff536a741fa3539030a7dc5a3be42c9bedb005bb126d7661
font_01_sfnt_off0000fcbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCBD 10440 bytes
SHA-256: d5bb604b48c11ef011be895f5e68bc8e43de8f2cab351338557e7bf12ebe36d5

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