Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f9d066321fe08ea…

MALICIOUS

PDF

81.7 KB Created: 2021-03-19 19:59:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d2d99ea76cfaa8dc10eb341c491f1da SHA-1: d2f145594d1c4bc4726756980b0f18a5695d8e88 SHA-256: 1f9d066321fe08eadc18e5aeb3e7c78c0e4c3a5e63e962a8569f093de14a313e
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to 'https://botokaw.ru/strik?utm_term=joyetech+evic+vtwo+mini+75+wattage', which is a strong indicator of a phishing or malware distribution attempt. ClamAV detection and ML classification further support its malicious nature. While no scripts were explicitly extracted, the presence of external URIs suggests an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://botokaw.ru/strik?utm_term=joyetech+evic+vtwo+mini+75+wattage
    • http://iminn.ru/2001_suzuki_sv650_service_manualnzq4f.pdf
    • http://100naturals.fun/soul_winners_worship_songszl6z4.pdf
    • https://cdn-cms.f-static.net/uploads/4485440/normal_604032843dfd8.pdf
    • https://static.s123-cdn-static.com/uploads/4475565/normal_600922a4d5bdd.pdf
    • http://petersikdar.com/13598936901o6w0c.pdf
    • https://cdn-cms.f-static.net/uploads/4370263/normal_604d275bd81a7.pdf
    • http://gmetry.online/231133689193ggdg.pdf
    • http://probmaka.tech/dirawepekemogxf1a0.pdf
    • http://prosucre.pro/mitukofakijupakomabo1jqx7.pdf
    • https://cdn-cms.f-static.net/uploads/4371808/normal_6016167292df2.pdf
    • https://cdn.sqhk.co/pejinijew/BLghjjt/onedrive_download_limit_registry.pdf
    • https://cdn-cms.f-static.net/uploads/4414680/normal_6043e468eeee4.pdf
    • http://mavito.online/sword_slash_sound_effect_free_downloadfibag.pdf
    • https://cdn.sqhk.co/gabixeme/fTheEhh/infected_2nd_degree_burn_pictures.pdf
    • http://center-about.com/55268420193nj9x9.pdf
    • http://lolkek.xyz/blackdecker_mouse_detail_sander_with_bonus_sandpaper_bdems600var058h.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://7a9095e9-4ba3-4ff7-9406-a75d0382ce8a.filesusr.com/ugd/db93e9_09d6d4814eed47a6ab8b43d64d12e3f4.pdf?index=true
    • https://s3.amazonaws.com/jeponowon/best_online_watermark_remover.pdf
    • https://4f65703b-d4c0-4c9c-9e30-73c8cc83ec5d.filesusr.com/ugd/54fa57_fb212a5cfad04251a7fc6fae38328ebb.pdf?index=true
    • https://s3.amazonaws.com/figidireki/gesujukexusameribinikozi.pdf
    • https://8eefcaf3-52f5-4123-8be5-b1f0aaeea45e.filesusr.com/ugd/1d3654_785466ff6ce6419c94aed903b3a428b0.pdf?index=true
    • https://s3.amazonaws.com/lomogas/similarities_between_osi_and_tcp_ip_model.pdf
    • https://8eccd3b7-fb20-4588-a5b5-4d8c58591879.filesusr.com/ugd/0e6328_5e362c8371144732a153f667f15aacc6.pdf?index=true
    • https://s3.amazonaws.com/tapelu/audi_a4_2017_car_manual.pdf
    • https://s3.amazonaws.com/wovisak/bharaate_songs_w.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_off0000f579.bin
97a9aa70e8b2516177cb910b6a353dd7170faac73ca4d8ba31c2c192e8b08d3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF579 5144 bytes
font_01_sfnt_off000106f9.bin
a7667112a3fe299ecdace12ce4512a5fd209893ead6ce59b67d28ae52b1f78eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106F9 10648 bytes
font_02_sfnt_off00012b3c.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B3C 4324 bytes

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