Malicious PDF — malware analysis report

Static analysis result for SHA-256 22f115aead66b086…

MALICIOUS

PDF

83.4 KB Created: 2020-12-22 06:56:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 196fee43a4ceb0a89ea1f11ffd5d23b4 SHA-1: 4429a81d284d4d67c9c0b308ff148e152cc1a5c9 SHA-256: 22f115aead66b0868efb83bcee48ac0b2ea27da6bd078682c4375b664c6a3e15
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'traffnew.ru', which is likely a malicious domain used for phishing or malware distribution. The document body, though heavily obfuscated, references 'Dragon quest 8 ps2 mods', suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/strik?utm_term=dragon+quest+8+ps2+mods PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4445881/normal_5fcb56fcdf5a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484994/normal_5fba8d637200a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491155/normal_5fdd5d8a8f0af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379742/normal_5f9569e668ac9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367281/normal_5fb4cda6d5051.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/e48eb4d9-b121-450a-9b4a-4b31b9e353fa/hairspray_script.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/empi_electrode_placement_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcdf0bc744041036fcec8dc/t/5fcfed3c4211f360f6944a58/1607462205697/gedan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c07c430-44bb-4f6c-a458-3564395e7938/types_of_multimedia_in_education.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/79442617184.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b299a805-7d64-4953-8697-22090fcac6cf/4.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/rumajoja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf2931a6-1beb-4a11-bf9b-a9849284ad9f/quaboag_regional_high_school_fax_number.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_off0000f871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF871 5700 bytes
SHA-256: b83cb2dfdd3ec45793a4fa8372be6c38a8ec33194981551628fb944f30b1058d
font_01_sfnt_off00010bbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BBD 17416 bytes
SHA-256: 874c735d0e5a1a7d5496b03641d4018bc3d575e8cd30b67770401fbaa686e276

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