Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ce59fdc3fa79c0f…

MALICIOUS

PDF

83.7 KB Created: 2021-04-23 17:57:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf0998f2d6637cd3e4c5fee0d521248f SHA-1: 7bd52edc86a5c2e2643eb45c064d30862fbbd44a SHA-256: 1ce59fdc3fa79c0fbd881b774bedd694863cdf0ee56bf69255abf3f3a7f707ac
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL and numerous other URLs point to external resources, suggesting the document is designed to redirect users to potentially harmful websites for phishing or malware delivery. The document body, though heavily obfuscated, contains text related to a book title, likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://nipisod.ru/strik?utm_term=libro+marques+de+sade+justine+pdf
    • http://yogist.fun/wamozefguh.pdf
    • https://lukogazusewof.weebly.com/uploads/1/3/4/6/134643336/b56c7a.pdf
    • https://wubobuxidozexe.weebly.com/uploads/1/3/4/3/134322977/da977aadd0034.pdf
    • http://vatologox.iblogger.org/anuranan_movie_songs.pdf
    • http://bekusasodix.iblogger.org/tavizulekedojuresiren.pdf
    • https://cdn.sqhk.co/dipasupor/iCK9iax/85494368737.pdf
    • https://zowajapizuxazo.weebly.com/uploads/1/3/0/9/130969341/61346cc1.pdf
    • http://dresdenpharma.ru/denudosevifaom7be.pdf
    • https://cdn.sqhk.co/makubeku/j3jdDha/halloween_color_by_number_horror_painting_books.pdf
    • http://nuwevabufa.mypressonline.com/abnormal_psychology_alloy_9th_edition.pdf
    • http://vizezokope.iblogger.org/how_to_update_address_on_drivers_licence.pdf
    • http://fesebenawasoz.iblogger.org/anorectal_anatomy_and_physiology.pdf
    • https://cdn.sqhk.co/nanagajog/hijfLjs/mujuxorebuvonazukakerujaw.pdf
    • http://toxipoxekej.medianewsonline.com/business_plan_for_online_shopping_website.pdf
    • http://blacktea.space/65543108562lebp0.pdf
    • http://firstreadersclub.com/pafufivosezosof7q6p.pdf
    • https://tepojaja.weebly.com/uploads/1/3/5/9/135966759/3776288.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://jisijuvod.myartsonline.com/60207879878.pdf
    • https://196cdf53-7a38-4f80-8f5e-3ad65c24f50e.filesusr.com/ugd/e5a593_c0217155462643ab85f9f6af8b668c23.pdf?index=true
    • https://28932ed2-21d9-4123-99cb-fcff0aac4472.filesusr.com/ugd/cc089a_72e5902f3fb24720b205acf71e26498d.pdf?index=true
    • http://gototura.myartsonline.com/cypripedium_calceolus.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6e6.bin
421acf61b91e6d7a74334ecaea3e7ce51e27b5c5e71cbc38ed6afe996d519820		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E6 5320 bytes
font_01_sfnt_off000108d7.bin
c6ded3210eae7190c0f8c2bb4d8e73720aaf407d9d9692bed42ad001f2c577a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108D7 12744 bytes
font_02_sfnt_off0001318b.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1318B 4324 bytes

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