Malicious PDF — malware analysis report

Static analysis result for SHA-256 902398d5d51af141…

MALICIOUS

PDF

77.2 KB Created: 2021-03-16 12:48:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: daa59cea0a033ec9f85b58e6f54e634c SHA-1: 5d9916264dead9bf026f9be3f6d44cdf084f60a8 SHA-256: 902398d5d51af1411e73897f9771c4ee0a9e130dd4fd2dcef9dbf3779d148154
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to 'xajibur.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to a search query.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://xajibur.ru/strik?utm_term=lord+of+the+rings+cast+elf+king PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4480905/normal_5fd3cc3964670.pdfIn PDF document text
    • https://cdn.sqhk.co/salulilo/YEji9y0/lagu_terdiam_sepi_uyeshare.pdfIn PDF document text
    • https://cdn.sqhk.co/mekurapiw/hghjfae/lelobizatom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486772/normal_600da50c34230.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418583/normal_5ffe884624947.pdfIn PDF document text
    • https://cdn.sqhk.co/romafime/gvie9ic/biblia_scofield_gratis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449992/normal_5fe05ceaa09c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414488/normal_60278bef28330.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467601/normal_6033ba8b0fe7b.pdfIn PDF document text
    • https://cdn.sqhk.co/kobewudojuvo/htO4d8s/radio_man_stickman_real_crime_simulator_3d_online.pdfIn PDF document text
    • https://cdn.sqhk.co/sadirurafixi/LwQEWha/teachers_credit_union_routing_number_texas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370780/normal_6032014e82441.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449014/normal_603f00d0d877c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386084/normal_5fc6204858a7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481291/normal_6031489a37a3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374542/normal_60122b8d6101e.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/b41dec05-4b70-4b12-9fcd-51b9f60017dd/advanced_trauma_life_support_atls_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/worewizuri.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/zatuzosawuritegijiwu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae3be360-c4be-48df-b6c3-82781a43f87a/xibomegisaxewiwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bfc96c1-6b6c-41d3-9b77-a74c76e4b157/thule_freeride_532_roof_mounted_bike_rack_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32ad49a9-fa47-4eae-9049-e4bbed7bdbf5/trx_exercise_list.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_off0000f05c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF05C 5288 bytes
SHA-256: 723f3547bee33bec8f16e65e43605fba7a9988e523e238c7ae06e49a8c569317
font_01_sfnt_off0001025e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1025E 11024 bytes
SHA-256: 046bc13be487f75a98fa3b681bc92901f0a0b6267a7964f889fd2833bd0e1fa7

Open this report in the interactive analyzer, or submit your own file for analysis.