Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f3add4e4d583a0e…

MALICIOUS

PDF

76.8 KB Created: 2021-02-12 11:48:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0adaff69f8b059b4f76d11a1de23f9ca SHA-1: 01fc79defa05d57647e4c5272a527095d2c7efc1 SHA-256: 5f3add4e4d583a0e9ec75d59c138c98a26c8d94b054c624599a9ce90d6db05f2
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 PDF contains embedded URIs pointing to external websites, suggesting a phishing or credential harvesting attempt. While no scripts were explicitly extracted, the presence of embedded URIs and the overall detection strongly suggest the PDF is designed to redirect users to malicious sites, likely as part of a spearphishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://seumenha.ru/wix?keyword=black+and+decker+lst136b
    • https://wefojomoki.weebly.com/uploads/1/3/5/3/135389947/c34b7c39b14.pdf
    • http://salet.store/frag_pro_shooter_for_pc70xd7.pdf
    • https://static.s123-cdn-static.com/uploads/4370063/normal_5fdfb3881ffba.pdf
    • http://wildber.store/93034279333wchh8.pdf
    • https://cdn-cms.f-static.net/uploads/4426697/normal_6016bbd6b5256.pdf
    • https://melijezaziwoni.weebly.com/uploads/1/3/4/8/134851492/1931696.pdf
    • http://lnstagramlivesupportcenter.com/modern_physics_3rd_edition_krane5qjl9.pdf
    • http://otomail.business/dovezakogukudakuvisojezt7bk.pdf
    • http://nickned.me/fodibezidomuq0af.pdf
    • https://patoxudiza.weebly.com/uploads/1/3/0/7/130739147/bukatafe.pdf
    • https://ginufadep.weebly.com/uploads/1/3/4/6/134668932/c5323f4.pdf
    • http://bazis-rostov.com/lisetijilinmuw8.pdf
    • http://arenaprobet.com/photomath_para_pc6no7l.pdf
    • http://ijmalan.xyz/ballpoint_pen_brush_photoshopu8gih.pdf
    • https://cdn.sqhk.co/suxujaba/djioyn6/vobumidefanawamosul.pdf
    • http://prostosite.site/yamaha_sports_bike_hd_wallpapers7xtyn.pdf
    • http://sarhello.online/17926437686w0l1s.pdf
    • http://crubr.space/making_sentences_with_words_worksheetss9076.pdf
    • https://cdn.sqhk.co/zugeketinog/dhg44k0/fusezanodis.pdf
    • https://cdn.sqhk.co/vafodagusun/cj0FShc/posetumoxagof.pdf
    • https://bunadijora.weebly.com/uploads/1/3/4/4/134432215/136936.pdf
    • http://kersita.fun/10108403175x63sg.pdf
    • https://cdn.sqhk.co/kawonidoza/bQghge7/soccer_coaching_drills_for_beginners.pdf
    • http://fullhp.info/woods_tents_set_up_instructionspbamg.pdf
    • https://static.s123-cdn-static.com/uploads/4490936/normal_5ffdc42ec4e1a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000edf1.bin
d7a25bd93b6e1a75c0f909440b550dc127b22470b0edd789d8ef6740e78baa0a
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF1 5556 bytes
font_01_sfnt_off000100e1.bin
bd1df80d44fd53ba19c996a4f9d4d41deec23bb0824606abf94806d50eaf15a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x100E1 10904 bytes