Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd47ce05b058f415…

MALICIOUS

PDF

73.8 KB Created: 2021-01-10 11:44:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d7323a37a415d1764faad82eb61a275b SHA-1: 0d6f0a388f2e17efdbc976c0b8295d2c088947ef SHA-256: bd47ce05b058f4150c670749704d3c609dfef50051e14894b74c792c61554bee
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'traffset.ru', which is a strong indicator of a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create PDFs from web content, potentially to mask malicious links.

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://traffset.ru/aws?utm_term=best+app+to+read+manga+on+android PDF link annotation
    • https://cdn.sqhk.co/wuwovodegi/TDBhgji/kujojetovuberikafafonasul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454421/normal_5fb8d3d3999d2.pdfIn PDF document text
    • https://site-1236126.mozfiles.com/files/1236126/grass_cutter_blade_honda.pdfIn PDF document text
    • https://cdn.sqhk.co/nodewanase/dVhjajc/planets_pictures_and_names_in_order.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384310/normal_5f9b5d630f307.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415944/normal_5f971c396c2b0.pdfIn PDF document text
    • https://cdn.sqhk.co/zisuxemop/hbDigz2/space_rocket_first_stage_landing_simulator_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/gukawaki/hiejbhe/roblox_tower_heroes_all_characters.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419826/normal_5fbd65a388bc3.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/gumagabu/homelite_chainsaw_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/82065306350.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/51471708525.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/xikitediwa.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_off0000e4b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B5 5296 bytes
SHA-256: 46023a7445c65e91b0684147b9b4f72393be5c29233fae9abd6469a90001744f
font_01_sfnt_off0000f6a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6A4 10412 bytes
SHA-256: c8e6fd456a722dfa08498cafeff1eb8a4bff58871f82e0dbe42d4d54d19b368d