Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6e7933cf7e25328…

MALICIOUS

PDF

76.3 KB Created: 2021-02-27 16:29:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9bf6837b450a6ac0df811ad98e5052cd SHA-1: 2da2a0483494e672f3cccc3df1be7dafa590b587 SHA-256: e6e7933cf7e25328f486168595b228b14c73926ea4419335ecd7b4616c03d128
124 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external links, with a significant portion pointing to disposable hosting and link farms, suggesting a phishing or redirection scheme. The document body, though heavily obfuscated, appears to be a lure related to quality assurance, likely intended to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9821

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/award?keyword=what+are+the+three+parts+of+quality+assurance PDF link annotation
    • https://xisofapetuv.weebly.com/uploads/1/3/4/7/134747578/4688554.pdfIn PDF document text
    • http://vorgazme.com/fuvimomapokqtyrh.pdfIn PDF document text
    • https://cdn.sqhk.co/xudevekelefe/jehifil/mudugemozibojajogalegelus.pdfIn PDF document text
    • https://jafelabuz.weebly.com/uploads/1/3/1/3/131398525/63e06.pdfIn PDF document text
    • https://cdn.sqhk.co/widafopaj/igliajd/99975810721.pdfIn PDF document text
    • https://nererudufujodu.weebly.com/uploads/1/3/4/3/134321338/08afa657a.pdfIn PDF document text
    • http://allfreebets.ru/moulinex_brevete_sgdg_manualr0xkq.pdfIn PDF document text
    • http://govusinixarimi.iblogger.org/bogepozupejimesovofugan.pdfIn PDF document text
    • https://cdn.sqhk.co/datawafag/8heJibA/ben_pol_new_song_wapo.pdfIn PDF document text
    • https://nupimixek.weebly.com/uploads/1/3/2/7/132712066/bf49e3.pdfIn PDF document text
    • https://cdn.sqhk.co/nudogada/hjic9zz/fozemin.pdfIn PDF document text
    • https://koreperuk.weebly.com/uploads/1/3/2/6/132680900/wulupejum-vuzodadofubexo-safovixegexiw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/ableton_live_9_suite.pdfIn PDF document text
    • http://wolaniloko.epizy.com/homicide_report_south_los_angeles.pdfIn PDF document text
    • http://fofilelajisemap.rf.gd/weviwezufami.pdfIn PDF document text
    • http://fabonek.rf.gd/6014090382.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fde1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE1 5344 bytes
SHA-256: c043c0fafb585592c8cb0c35f660aa1d083338c9cacdce0e50cc2a61b966f2f6
font_01_sfnt_off00011024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11024 10712 bytes
SHA-256: fc5167e25820f95b572bc9bc8bed36d86da4c4896c6278509aa368cec3ce9a14