Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fd9482204b8421f…

MALICIOUS

PDF

259.9 KB Created: 2021-02-13 10:18:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: fff2990badda7402c023ba783fc6d884 SHA-1: db4431e30dff41e3cd46d3436f572c76d92273af SHA-256: 0fd9482204b8421f46f054f26061752ed63833a87d41fa30decf21178dd1368c
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'bologen.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9639

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://bologen.ru/aws?utm_term=cowsep+yi+jungle+guide PDF link annotation
    • http://tumbaa.space/91543102624x9pf7.pdfIn PDF document text
    • https://cdn.sqhk.co/ranuvore/gAqhgRz/nizelazizamatogurojuj.pdfIn PDF document text
    • http://gladkoe-telo.xyz/47077924133xbizu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415519/normal_5fcc509c332b6.pdfIn PDF document text
    • https://cdn.sqhk.co/xekejegixawo/cBK3hdi/san_andreas_open_world.pdfIn PDF document text
    • http://maslovauto.ru/aadhar_card_correction_form_filling_exampleg4uwn.pdfIn PDF document text
    • http://good-production20.site/roku_premiere_plus_setupsov7z.pdfIn PDF document text
    • http://helplnstagramcontact6088757.com/23322476460y8ey7.pdfIn PDF document text
    • http://aycotoro0.xyz/atm_transaction_failed_complaint_letter_format_sbihreuf.pdfIn PDF document text
    • http://kupivse.xyz/wekazulud9cuw.pdfIn PDF document text
    • https://cdn.sqhk.co/rapowipijes/AggEdKn/lomukugerunako.pdfIn PDF document text
    • https://cdn.sqhk.co/jirudumom/iejihg5/notification_sounds_for_different_apps.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
    • http://pekagotikoweguf.epizy.com/56828129998.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/gagare.pdfIn PDF document text
    • http://joluror.rf.gd/33063557629.pdfIn PDF document text
    • https://s3.amazonaws.com/lopeteb/jusenesawuxa.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_off0003b9c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B9C4 4916 bytes
SHA-256: 2a160559fdbc26fb1a127c923a6c1d76b3c35da22dd992854bdabbab5c3d7e95
font_01_sfnt_off0003caa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3CAA2 11824 bytes
SHA-256: f1d1051101c9183177d8c69d6cb4573d041d9c7d50ff746322294b3b413f9db4
font_02_sfnt_off0003f198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F198 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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