Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ac53bd34617bd9d…

MALICIOUS

PDF

77.5 KB Created: 2021-03-29 00:02:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c14bf96af2dd4a1a6eee5b23936affb5 SHA-1: e2090f945902866dabb96da418e1ec450b2b545e SHA-256: 9ac53bd34617bd9d56c08a0c353c46e95d2ad932bfe5c23d7fb70ff86521adce
116 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a critical ClamAV detection and an ML classifier flagging it as a phishing trojan. The presence of an external URI pointing to 'botokaw.ru' and the 'SE_CALLBACK_LURE' heuristic strongly suggest a callback phishing or tech-support scam attack pattern. No scripts were extracted, but the PDF structure and embedded URLs are indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://botokaw.ru/strik?utm_term=restaurants+near+bow+tie+cinema+richmond+va
    • https://jibuzuku.weebly.com/uploads/1/3/0/7/130739289/nebeba.pdf
    • https://tudexabi.weebly.com/uploads/1/3/4/7/134770635/gajasupetikip_metoribowef_kalot.pdf
    • http://stonersfranchise.com/sepuluwuzafegijotokozcm.pdf
    • http://klyshsheff.xyz/fufizujozuw7nsj.pdf
    • https://modotetizifoxi.weebly.com/uploads/1/3/1/6/131637555/6470620.pdf
    • https://pejapuvurexoku.weebly.com/uploads/1/3/1/6/131636728/0aa2d159741e.pdf
    • https://zepudelewow.weebly.com/uploads/1/3/2/6/132682561/zuritox-zezizarubagij-batomesupir.pdf
    • https://cdn.sqhk.co/busosuwik/UOVa2VM/men_s_world_cup_2026_cities.pdf
    • https://cdn.sqhk.co/dudilabatod/fFN7Ygf/super_mario_odyssey_kingdom_adventures_box_set_unboxing.pdf
    • https://cdn.sqhk.co/sabewapolire/K2Mjdhg/anatomy_and_physiology_book_9th_edition.pdf
    • http://jakartapro.xyz/82965844173epcs.pdf
    • http://grampus-shop.com/11456955824ndt4n.pdf
    • https://cdn.sqhk.co/wuwosexed/RnXHgiN/zolafasosuvuvebeneteja.pdf
    • https://cdn.sqhk.co/radofufalam/E3heHia/magic_rampage_best_class.pdf
    • http://aydym.club/81780914080or6in.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kosepeb.rf.gd/ridonatonamikulesegi.pdf
    • https://uploads.strikinglycdn.com/files/787b8a1e-b12d-4f16-9bfd-822a5413cc63/kexusadumosaninezakevamu.pdf
    • http://kawesik.epizy.com/zomixatezizanom.pdf
    • http://mejesikiwabez.epizy.com/converter_decimal_para_binario_com_virgula.pdf
    • https://uploads.strikinglycdn.com/files/7bc094d3-daa1-494f-934d-920e3e09071f/mutebonadir.pdf
    • https://uploads.strikinglycdn.com/files/76203c01-997c-4296-b67d-a9f372c7a666/97373564924.pdf
    • http://sumojoripira.rf.gd/practical_network_cabling.pdf
    • http://nototen.epizy.com/ad_aware_free_windows_7.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_off0000ef7a.bin
6e2d689c9495bd56881c94d2afbe6c0b3e5f884f1a2681e491392e95f5081e2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF7A 5448 bytes
font_01_sfnt_off000101ec.bin
6e5863fd2617d4b9eeff48576b414a362285496513120e8d1ae554738be5c6a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101EC 11128 bytes

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