Malicious PDF — malware analysis report

Static analysis result for SHA-256 17ee001fdef93601…

MALICIOUS

PDF

63.0 KB Created: 2020-12-06 17:27:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ed1c624f7952d1f2505cf5f8f457905 SHA-1: 784140e855ade9d88999a1530d84eccb6b1a2cd6 SHA-256: 17ee001fdef936012f0c3449edaefda60550fad4bf395680bceb805b7d791bfa
154 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Weebly-hosted PDFs, indicative of a link farm or SEO manipulation tactic. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially malicious or phishing-related websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8289

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://traffine.ru/strik?utm_term=growing+spinach+indoors+under+lights
    • https://gijepunudadolow.weebly.com/uploads/1/3/4/4/134497403/valoponoruradi-laxuzekovafip-losut.pdf
    • https://bubixoduxufito.weebly.com/uploads/1/3/1/0/131070588/f32a19ad1.pdf
    • https://static.s123-cdn-static.com/uploads/4377674/normal_5fc775bdee5c4.pdf
    • https://jiwedizuku.weebly.com/uploads/1/3/4/3/134310564/solajizofe_tozowofis_womezosuzinakis_titevusubi.pdf
    • https://cdn-cms.f-static.net/uploads/4387232/normal_5fb8b005d019d.pdf
    • https://cdn-cms.f-static.net/uploads/4372982/normal_5fa4afde6b135.pdf
    • https://mixirarorasuju.weebly.com/uploads/1/3/4/3/134317495/gapelutozusuze_futorun_gajevobijunov.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/62163e50-e0bd-4d65-880d-ffbe08910505/40243041007.pdf
    • https://uploads.strikinglycdn.com/files/acbd1926-c9ce-4207-9e79-ead14c158820/78890816299.pdf
    • https://uploads.strikinglycdn.com/files/fa3da65a-3e4a-455a-b05a-835a5a9e2fa8/sesixov.pdf
    • https://uploads.strikinglycdn.com/files/42dc7523-682f-4487-9aa0-a09bb53879de/darkest_desires_mod.pdf
    • https://uploads.strikinglycdn.com/files/0bf146c6-513c-4d1d-b2c3-da435e3e6fde/cod_world_at_war_zombies_android_dow.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d748.bin
d890ed07b8b1d93655f5186328a9099285e2ae96b4db896f2293885a93db9a08		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD748 5340 bytes

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