Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fdfec30f32047a8…

MALICIOUS

PDF

73.4 KB Created: 2021-03-20 00:09:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 800e679470592a711539eef743516137 SHA-1: 9632754842b74c61fd03df5d6ce9a774bb7eacb2 SHA-256: 2fdfec30f32047a8a23a75f2fc788465c5f8192f2a2501b4125aab420a8490d9
116 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating high maliciousness. The 'SE_CALLBACK_LURE' heuristic strongly suggests a callback phishing or tech-support scam, where the user is prompted to call a number. The embedded URL 'https://botokaw.ru/strik?utm_term=m+audio+fast+track+c400+driver+mac+el+capitan' likely serves as a lure or a redirect to malicious content. No scripts were extracted, but the PDF structure and heuristics point to a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=m+audio+fast+track+c400+driver+mac+el+capitan
    • http://hocostyle.ru/pimibulelanevav5bp7.pdf
    • http://hallop.xyz/341526682332fheq.pdf
    • https://cdn-cms.f-static.net/uploads/4487201/normal_6049b70b4fe4c.pdf
    • https://cdn.sqhk.co/javabufe/jalhahc/eres_tu_maria_answers_episode_4.pdf
    • https://cdn-cms.f-static.net/uploads/4424029/normal_60417e8b203f7.pdf
    • http://formblckr1.xyz/mixisulpn7e9.pdf
    • https://cdn.sqhk.co/jobezivozuf/ngihdhf/download_block_strike_mod_apk_2019.pdf
    • http://ludoritepiru.22web.org/gebutuditika.pdf
    • https://cdn.sqhk.co/jopubelo/jjatIhh/40257856086.pdf
    • https://cdn-cms.f-static.net/uploads/4414514/normal_6025b223ebd12.pdf
    • https://cdn-cms.f-static.net/uploads/4480412/normal_602948da9219f.pdf
    • https://cdn-cms.f-static.net/uploads/4369141/normal_605382808c0ac.pdf
    • https://static.s123-cdn-static.com/uploads/4471240/normal_5fcaee563d071.pdf
    • https://cdn-cms.f-static.net/uploads/4379987/normal_6049b4ca25493.pdf
    • http://zimejitudik.iblogger.org/kewigupajuzazajonivoridi.pdf
    • https://cdn.sqhk.co/kiribikiv/DifWv1q/titan_quest_switch_ragnarok_release_date.pdf
    • https://cdn.sqhk.co/jorisuzil/g4YAzhe/sozaxexoge.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mibofive.epizy.com/world_economic_forum_global_competitiveness_report_dataset.pdf
    • https://uploads.strikinglycdn.com/files/770570dd-5e06-43bf-aa33-892d72b5dbd1/how_to_upload_a_font_to_wix.pdf
    • http://nolixegoxow.epizy.com/smartsheet_stock_chart.pdf
    • https://uploads.strikinglycdn.com/files/0a178c59-dd3c-4ea6-85c1-65395094a561/gadagoxubogalibiwa.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_off0000de68.bin
dd65df01dd83b5bab4de6bd0534ed98698a419de6c6c51a2525122deff5eebe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE68 5660 bytes
font_01_sfnt_off0000f1b5.bin
32970b9b343de7819cc455217a947d7bbeb3a2b5adeb40bbea451131c6b9ea19		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B5 11256 bytes

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