Malicious PDF — malware analysis report

Static analysis result for SHA-256 42d3bedbbcc25ff0…

MALICIOUS

PDF

75.5 KB Created: 2021-01-04 21:14:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2175abcc69fea29fceca60b01f9b1539 SHA-1: ea3d7eefd87d28e23cc0ad32de2f3ff144a29ffa SHA-256: 42d3bedbbcc25ff0486e04c37b8e72004ec8e13679421bed93b744bb310a3aa1
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'https://traffnew.ru/123?utm_term=4000+watt+amp', which is likely used for phishing or to download a secondary payload. The PDF structure and embedded content suggest it's designed to trick users into visiting this external resource.

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://traffnew.ru/123?utm_term=4000+watt+amp PDF link annotation
    • https://cdn.sqhk.co/rebiguta/d0Twifc/microsoft_flight_simulator_2020_war_planes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450719/normal_5fa623ff60f13.pdfIn PDF document text
    • https://cdn.sqhk.co/wirumedaba/qieLgcQ/21711814056.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402244/normal_5fa3901a44a88.pdfIn PDF document text
    • https://cdn.sqhk.co/jirowolad/zgcbhaw/house_paint_colors_images_outside.pdfIn PDF document text
    • https://cdn.sqhk.co/lewulula/6gjMgdE/rudavesubegisawaxuzetila.pdfIn PDF document text
    • https://autotekcaraudio.com/mm4020-1d/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pirosisob/xewimaxizekomunegif.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/skies_of_arcadia_legends_gamecube_iso.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/35345052636.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/lilupej.pdfIn PDF document text
    • https://s3.amazonaws.com/juvetaso/formal_absent_letter_format.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/xadapabesab.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/83523442588.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/quote_document_template.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_off0000e9cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9CC 4884 bytes
SHA-256: be9356649cabd0916a386b2884ebfd657addee67b356ed94088bef97cc618ca5
font_01_sfnt_off0000fa70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA70 11080 bytes
SHA-256: 439bd8002c04a4b3c74829f3d4d1ce0f233eda0cea1e6de675f76e7eb4c1aa3b