Malicious PDF — malware analysis report

Static analysis result for SHA-256 24772b3775152c2d…

MALICIOUS

PDF

59.3 KB Created: 2020-12-24 06:43:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3939447d3a0bec43613271ba2e640027 SHA-1: 33b3bff64be1ef4cb2cd4a385422e0bbe6ab5e42 SHA-256: 24772b3775152c2dbeb3570141bdac7cd4afcb5ff6b8abe620be41b3cb7ef6c2
154 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many pointing to PDF files hosted on various platforms, indicative of a link farm or phishing campaign. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior. While no scripts were explicitly extracted, the presence of numerous external URLs suggests an attempt to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9873

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-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
  • 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://traffking.ru/strik?utm_term=yellow+bookshelf+for+sale+cape+town
    • https://cdn.sqhk.co/xilelawemu/iM6OKii/wujutaze.pdf
    • https://ziwolowuwuxux.weebly.com/uploads/1/3/5/3/135321756/5516147.pdf
    • https://wabebapag.weebly.com/uploads/1/3/4/3/134335427/vojeruvovali_komozuxilur_vozenamura_zipiniramezaje.pdf
    • https://wuwonerosetopux.weebly.com/uploads/1/3/1/6/131606808/6d43e286e11d.pdf
    • https://biwomewiwuxe.weebly.com/uploads/1/3/4/1/134131409/4564995.pdf
    • https://cdn.sqhk.co/zakikola/QPtjfDl/46161734728.pdf
    • https://cdn-cms.f-static.net/uploads/4383925/normal_5fa7295d3d028.pdf
    • https://static.s123-cdn-static.com/uploads/4390681/normal_5fca33803fc5a.pdf
    • https://cdn.sqhk.co/rosavuzezig/dROgjie/gepokekasisikiwuxizulelin.pdf
    • https://cdn.sqhk.co/zewuxumaro/hhPhj6p/temple_terrace_escape_room.pdf
    • https://cdn-cms.f-static.net/uploads/4379968/normal_5f95a609f1955.pdf
    • https://cdn.sqhk.co/dakagugi/bfhjFSX/beats_solo_3_battery_draining.pdf
    • https://cdn-cms.f-static.net/uploads/4407747/normal_5f9cf9e0bf715.pdf
    • https://lobogisotu.weebly.com/uploads/1/3/4/8/134870795/gisoputabuvufup.pdf
    • https://cdn.sqhk.co/xetasenuwoji/gijAhjr/stickman_destruction_5_mod_apk_1._12.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7ec.bin
a4d410e6d5949c1a1d51e7f222a6a3beaf39867e5888f67152dc209b66d74048
pdf-font-stream PDF embedded font (sfnt) at offset 0xD7EC 5100 bytes