Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7380ef579d8fb10…

MALICIOUS

PDF

80.0 KB Created: 2021-02-27 05:14:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 61993edcf91b7943567a044c96a149c1 SHA-1: 936114b0a647b6b13afafac04b719d359d75f744 SHA-256: d7380ef579d8fb104130ace5c24bf7a3d1f02550df5ee8fa7a8a6a7f81a7df45
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, mezovuduw.ru, which is likely used for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to changing TV aspect ratios, aligning with common phishing tactics.

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://mezovuduw.ru/award?keyword=how+to+change+aspect+ratio+on+emerson+tv PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446784/normal_603434ab0b6b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410222/normal_6009c859efd97.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450746/normal_5fcd70768eb95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459322/normal_5fd8507bb8677.pdfIn PDF document text
    • http://physcoo.com/request_for_quotation_document_template5tja1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450634/normal_5fed10c1f33a1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368219/normal_5ff9a51573350.pdfIn PDF document text
    • http://weinmvc.net/sketchup_tutorials_for_architects_free_downloadph017.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413473/normal_5ff698bd83f1a.pdfIn PDF document text
    • http://4gusevshop.website/true_metrix_control_solution_level_1_msdsfb47r.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465000/normal_5fe25f9424a98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450719/normal_60108222dff10.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ronarag.epizy.com/19369990442.pdfIn PDF document text
    • http://bosulug.epizy.com/what_is_organisational_behaviour_management.pdfIn PDF document text
    • http://baxodivol.rf.gd/abandono_infantil_tesis.pdfIn PDF document text
    • http://mujawonevafo.rf.gd/form_utility_meaning_in_marketing.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_off0000fc82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC82 5428 bytes
SHA-256: a02aba9a749b033cd2e13575b9b3e5d4a3b6e0a4de8f9b9e2fe7ec57ac786278
font_01_sfnt_off00010eeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EEB 10436 bytes
SHA-256: 150561aa8e3a15e68ff53eb2dce30f3e8f9e5cf81fcb54fada20fbe6b90ea9dc

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