Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e0e873ab3ebe60…

MALICIOUS

PDF

77.5 KB Created: 2021-03-29 23:02:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96163432f7f6d595f0f99063c70308a8 SHA-1: 20eb4b29a50f07d66a771c368641b83f23a15fea SHA-256: e8e0e873ab3ebe60f02b343f020775c13f9f0978904a0df196b99e701ad1d334
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many pointing to Weebly domains, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8909

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://dugedepap.ru/award?keyword=working+principle+of+2+stroke+engine+pdf
    • https://kibewuzogoluwiw.weebly.com/uploads/1/3/1/6/131636689/josaxasimon.pdf
    • https://cdn.sqhk.co/nigalasiline/sidjfEQ/stickman_jump_shadow_revenger_mod_apk.pdf
    • https://mejodedasebedo.weebly.com/uploads/1/3/4/7/134725949/ragenozapibi.pdf
    • https://cdn.sqhk.co/vomisape/chbvjjT/pukewejug.pdf
    • https://cdn.sqhk.co/batitiviz/jghhyq6/sokagebuxakelitasigepolug.pdf
    • https://toviladul.weebly.com/uploads/1/3/0/7/130776498/biwek.pdf
    • https://wivaralizufijol.weebly.com/uploads/1/3/1/4/131483386/defozarexolekaxuga.pdf
    • https://cdn.sqhk.co/fuvazuginu/jcrijlQ/turbo_driving_racing_3d_car_game_download_apk.pdf
    • https://baseparefawufif.weebly.com/uploads/1/3/1/4/131453046/5945a452759712.pdf
    • https://cdn.sqhk.co/rarukaboz/jfXjfjb/mumuduzigebokap.pdf
    • https://cdn.sqhk.co/xaderimi/RIeL4dp/jozuwozezotutud.pdf
    • https://cdn.sqhk.co/xufatirumina/iTPgcvm/17748526909.pdf
    • https://tuwazumabokanif.weebly.com/uploads/1/3/4/6/134611666/wibujazekuxelenewig.pdf
    • https://sekeratogo.weebly.com/uploads/1/3/4/6/134683690/2140503.pdf
    • https://7ffe38df-ef78-47a1-8632-a9c579db478a.filesusr.com/ugd/8ff694_2ed86da017524452bd0aead490b23873.pdf?index=true
    • https://s3.amazonaws.com/vidadaviwal/67028299244.pdf
    • https://bf23b77b-49a9-4bef-a898-a03cfb94aefa.filesusr.com/ugd/134172_6b0d8a40dfb74983a4a9844205e306a7.pdf?index=true
    • https://b564fea6-732e-489f-a029-a72dc6590de2.filesusr.com/ugd/6a4619_db604347154d44518f5a61455dfa6c74.pdf?index=true
    • https://s3.amazonaws.com/napoledunadigo/wovowal.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011185.bin
9223ab939a17778e7f59bc6aa0e614bb720e23b3178c6e9d33206510dc141dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11185 8072 bytes

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