Malicious PDF — malware analysis report

Static analysis result for SHA-256 204c1548d08b5971…

MALICIOUS

PDF

90.7 KB Created: 2021-03-20 20:14:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0aae549d3bbd38d0b57e1c2e07c4fc13 SHA-1: 7b4914a9c60acb851d2fd5aebaa54fb5b826b54e SHA-256: 204c1548d08b5971390be6a0d542eb5b3bd4ebe65be7e41640d0f34991fa7a8c
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, indicating a high likelihood of malicious intent. The embedded URL `https://jumiwimov.ru/award?keyword=brevet+blanc+maths+2020+pdf` suggests a phishing or social engineering lure, attempting to trick users into visiting a compromised site. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious document designed to lead users to external malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://jumiwimov.ru/award?keyword=brevet+blanc+maths+2020+pdf
    • http://sexedate69.site/marantz_pmd201_portable_cassette_recorderhzbu8.pdf
    • https://cdn-cms.f-static.net/uploads/4393632/normal_602019f704bbd.pdf
    • https://cdn.sqhk.co/satofapo/icWUigw/setuxaxuxarotumiwovu.pdf
    • https://static.s123-cdn-static.com/uploads/4471512/normal_600343bab99bd.pdf
    • http://genoray.pro/3d_printable_face_mask_framemnuhv.pdf
    • https://cdn-cms.f-static.net/uploads/4450141/normal_5fda92e5e91ab.pdf
    • https://static.s123-cdn-static.com/uploads/4451565/normal_5fc8474d297a2.pdf
    • http://lnstagramverifiedbadge-form.com/bloons_tower_defence_5_towers_guidepsk8m.pdf
    • https://cdn.sqhk.co/suxujaba/a6gfamW/khan_academy_math.pdf
    • https://static.s123-cdn-static.com/uploads/4426960/normal_5ffdf1de4c44d.pdf
    • https://static.s123-cdn-static.com/uploads/4408866/normal_5fe0d9669e0be.pdf
    • https://static.s123-cdn-static.com/uploads/4408184/normal_5ff6b358067a9.pdf
    • https://cdn.sqhk.co/guzamuvi/0RhPhdE/bukawirarakepubew.pdf
    • http://ooovseanalizi.ru/kasezariferaforbqr.pdf
    • https://cdn-cms.f-static.net/uploads/4425255/normal_604aca7852857.pdf
    • https://static.s123-cdn-static.com/uploads/4478683/normal_5fc9454b8a836.pdf
    • https://cdn.sqhk.co/zapusukajev/ggjhmhi/sony_home_memories_software.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://229c3593-bb94-4e5d-9b9f-ca3747df48ef.filesusr.com/ugd/145364_8df2684a94774d2f8799b1165ea37f31.pdf?index=true
    • https://7c5e2310-e79b-429e-9f4a-70471a43dcce.filesusr.com/ugd/8ec1ef_d8ef235612b141e8bdcfadd44a98b414.pdf?index=true
    • https://7fc1e5b2-1dd8-4457-9de2-3dea1ab9f589.filesusr.com/ugd/fedd61_152a739a6b7e4d72ae00daddc48682c3.pdf?index=true
    • https://336ddc11-c37d-4cd6-9685-7accad2975f7.filesusr.com/ugd/479fa9_a12258856dd242699fb8d9974f49d8e7.pdf?index=true
    • https://uploads.strikinglycdn.com/files/d1ec89d7-df32-4bc1-ac9a-ff355eb28d55/maposire.pdf
    • https://f421159b-d329-41e8-bc42-072bc93e4c50.filesusr.com/ugd/65d6f7_09c888d2b81c41b8942f580a817b1aa1.pdf?index=true
    • https://uploads.strikinglycdn.com/files/0d0c042a-f966-4986-9c1d-dca7aa3c7188/how_to_replace_the_correction_tape_on_a_brother_typewriter.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011d3f.bin
fe55abbacfedfe2675f6c1a97c61d694573f03d742dbd666a486ec9b8b52e6bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D3F 5920 bytes
font_01_sfnt_off00013140.bin
cc89592e21be74241da6855fc1d6e94af52e6f2b2ebc5f92a482cca8a1cac742		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13140 13496 bytes

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