Malicious PDF — malware analysis report

Static analysis result for SHA-256 2867f8bc75a8827e…

MALICIOUS

PDF

67.6 KB Created: 2021-03-05 09:59:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 194ad800bd8c0d588da07239adf06b10 SHA-1: c63d9800c961a3b589b7e794906b72823db8966c SHA-256: 2867f8bc75a8827e979c8e9643538d897bfcc7fdfa77c1236bc200f4b573982b
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8223

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://druttle.ru/aws?utm_term=how+to+disassemble+hoover+windtunnel+vacuum PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489609/normal_602f425db3e3d.pdfIn PDF document text
    • https://cdn.sqhk.co/ranetixeba/skhgGjf/gaming_wallpapers_hd_4k_for_mobile.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417033/normal_60099c8030c82.pdfIn PDF document text
    • https://cdn.sqhk.co/nejisakatok/holggxT/stickers_and_banners_duluth_ga.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385880/normal_601789f5d918d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404969/normal_5fca21b1f13da.pdfIn PDF document text
    • http://jotijitod.66ghz.com/the_personal_mba.pdfIn PDF document text
    • http://lewulumotuf.iblogger.org/70211409592.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolefowi/cibxOfI/35452471694.pdfIn PDF document text
    • https://cdn.sqhk.co/fukonovum/dfxjGKd/twitter_search_by_date.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2a4c341d-9af7-4f89-b48a-1b926ad6ced7.filesusr.com/ugd/dd6616_7b6c36a5b32b4c01a0e4f1d968b721d5.pdf?index=trueIn PDF document text
    • https://7ae52be2-ba3c-41fb-8935-29281088223e.filesusr.com/ugd/affaa6_648dea7e9d4e4b4cb7767ec1719ced77.pdf?index=trueIn PDF document text
    • https://c83cbd6e-a134-4b49-ba12-49f24c654ad9.filesusr.com/ugd/904a8b_582dd2f1a5c24ce495955147632cba24.pdf?index=trueIn PDF document text
    • http://fusiwati.epizy.com/24096551050.pdfIn PDF document text
    • https://s3.amazonaws.com/medaliwifufugel/larakonederugifozuga.pdfIn PDF document text
    • http://kukadafimi.rf.gd/83510670888.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/23271039651.pdfIn PDF document text
    • https://2e81f42f-67f9-46a9-89e2-a5f3ab3b03ee.filesusr.com/ugd/f138f5_597d9b80afae48a8a0da8212d1a48cb3.pdf?index=trueIn PDF document text
    • http://nebizevudofuxoj.epizy.com/masters_of_the_wild_dd_3.5.pdfIn PDF document text
    • http://wazinupizut.epizy.com/atoll_formation_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/91236114939.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F5 5432 bytes
SHA-256: ecfdb380fc2a64a12fc8584729e7290f62640743bba76ac1b6fe7e8b9b97d8ac

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