Malicious PDF — malware analysis report

Static analysis result for SHA-256 83bf6960e9701b48…

MALICIOUS

PDF

83.0 KB Created: 2021-03-05 10:23:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 5583fad85b3f855fb1a475005f202832 SHA-1: 9dfacc37e2aea8595829a1688f1213168ce447e2 SHA-256: 83bf6960e9701b48878188a741ff8aa86ba38472a8e9f88b07650358e1876535
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs to a suspicious domain, identified as a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content.

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://pelibifir.ru/strik?utm_term=plantronics+backbeat+fit+2100+user+manual PDF link annotation
    • http://jiramowujunobo.22web.org/reredijapitojateziref.pdfIn PDF document text
    • http://dimax-matrasy.ru/32303104985kkse4.pdfIn PDF document text
    • https://cdn.sqhk.co/desixurate/yiehiE6/56514586141.pdfIn PDF document text
    • https://cdn.sqhk.co/gepabafi/jbdB0jb/super_mario_world_3_cheats.pdfIn PDF document text
    • https://cdn.sqhk.co/pemenixa/hDTjioC/wisanafaromorufika.pdfIn PDF document text
    • https://cdn.sqhk.co/vanewano/4jj4HER/4105854403.pdfIn PDF document text
    • http://summerita.fun/rosisosafijedosiqa9m1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jotizifime/cbse_improvement_exam_2018_date_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65f8da34-5b77-4b69-8774-a6d560f57807/66261892901.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/3d_analyzer_software_for_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9dcf173-acbf-4a22-be06-51c03f6f6c9e/zyxel_pk5000z_default_password.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56c85bc0-1123-4336-91b3-51c1fe8730a3/xofutuzebuner.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/amazon_flex_driver_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96c9b143-460b-4521-9987-6850b64f5c29/navy_eval_writer_sailorization_bullets.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/27201889487.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/85625520484.pdfIn PDF document text
    • http://fepadegan.epizy.com/xatazamojesugososowetu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3084736-2c73-4a5c-92f5-c59d584efa95/40296037175.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/idiopathic_urticaria_treatment_guidelines.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f94c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94C 5440 bytes
SHA-256: 8872d0ce79ad1afa8ceba3757ff249d36ba30f50200059b9bd43ca3cce03fb91
font_01_sfnt_off00010bb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BB4 10792 bytes
SHA-256: 5acde2c2a06499d9bac364372143466a4aef301ad0022565e93f569665f6ae66
font_02_sfnt_off00013070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13070 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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