Malicious PDF — malware analysis report

Static analysis result for SHA-256 05e28be6d2436e91…

MALICIOUS

PDF

77.7 KB Created: 2021-04-07 14:24:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c8a88b447b684ccee28fd310ea6ca44 SHA-1: 7d561d4fed171c5ae057ffd9a2910b431cfdb6de SHA-256: 05e28be6d2436e91a47171922b6432a65598f9fa075f371c0344675d66064daa
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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=how+to+get+to+mount+fuji+from+osaka
    • https://cdn.sqhk.co/ponesigis/icjim3O/66713110623.pdf
    • http://menbp.online/874141091292q5pn.pdf
    • http://elerctum.org/pejonemiresukifi4j3ek.pdf
    • https://cdn.sqhk.co/kavejufa/gDEYpid/86803640252.pdf
    • http://alcozerox.com/model_respectful_dalam_kaunseling8dj0t.pdf
    • http://poroda.site/pano2vr_5_cheios_megaeoye0.pdf
    • https://cdn-cms.f-static.net/uploads/4452392/normal_5fd26fc86e848.pdf
    • https://cdn.sqhk.co/ropikenetu/9tThwjc/97876306869.pdf
    • https://cdn-cms.f-static.net/uploads/4445544/normal_6038b82354a24.pdf
    • https://cdn.sqhk.co/fedanojewem/bgUgjig/2413993081.pdf
    • http://dfds.in/406558415306phz6.pdf
    • https://cdn-cms.f-static.net/uploads/4425919/normal_6058fb7b96f9b.pdf
    • https://static.s123-cdn-static.com/uploads/4459320/normal_5fedeba33a9a2.pdf
    • https://cdn.sqhk.co/wodelaganav/gfehccG/blood_bubble_forest_school.pdf
    • https://cdn-cms.f-static.net/uploads/4492580/normal_5fe80d5d38e8f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fuxunowelujuxa.atwebpages.com/natetakesoxegevonam.pdf
    • https://s3.amazonaws.com/ninazarila/patoraludemolojo.pdf
    • http://samesesodore.onlinewebshop.net/states_of_matter_worksheet_3rd_grade.pdf
    • https://s3.amazonaws.com/mamukawaxatali/vifijedaj.pdf
    • https://s3.amazonaws.com/nowonovege/bezimaxapimetokijoma.pdf
    • https://s3.amazonaws.com/subopukomanaw/42857912544.pdf
    • https://s3.amazonaws.com/zaxefemebidaz/stream_music_app_android.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_off0000f143.bin
e2a0ec4599c844290c5d0c1e0c9a951c689e23e5ce4495d8125d2ea2c5237032
pdf-font-stream PDF embedded font (sfnt) at offset 0xF143 5248 bytes
font_01_sfnt_off00010322.bin
6d1fc11c6cf908231152123318818da91a5061585577e80146368fb8389765af
pdf-font-stream PDF embedded font (sfnt) at offset 0x10322 10752 bytes