Malicious PDF — malware analysis report

Static analysis result for SHA-256 494380c36214807d…

MALICIOUS

PDF

65.3 KB Created: 2020-11-27 01:07:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: bfa228b6b97df6cbb3db3525c9f79045 SHA-1: 147478851c31283ed8b9e13e95ff1c01779e2fb6 SHA-256: 494380c36214807d3161ef2cc0bc89777426ec97a217af6d63e77b940658d22a
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL points to a site offering a "hack apk", suggesting a phishing or malware distribution lure. Although no scripts were directly extracted, the PDF structure and embedded URI are indicative of a phishing 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://traffine.ru/strik?utm_term=hill+climb+racing+2+hack+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375886/normal_5f8ba0d6ba832.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454435/normal_5fb7e82d5cc65.pdfIn PDF document text
    • https://kiseridebajesa.weebly.com/uploads/1/3/1/4/131408791/sipasolekudozovuxib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487903/normal_5fad8faa165ae.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/tugunari_fogeze_nezejavoz.pdfIn PDF document text
    • https://nawawuxilebop.weebly.com/uploads/1/3/4/6/134679594/556aa.pdfIn PDF document text
    • https://wijizavop.weebly.com/uploads/1/3/4/3/134309393/ec93e6436.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/098b3f62-45ef-4e63-8439-17349e601860/fomonomelogek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7375a90e-67d6-44bc-9ae1-1fa64cc173c5/rutujekibawu.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/51054356348.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/translation_french_to_english_file.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/lorelei_james_unwound.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_off0000c29f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC29F 5464 bytes
SHA-256: a34482e9481512af6d5f7add46a9fdcdb5fda2b0c671682fbbb3a0566fa58b6e
font_01_sfnt_off0000d50a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD50A 10432 bytes
SHA-256: 03050abacfd47711e59370b74faabbede13c9bc8d2b91f0fcf046ae42ada014f