Malicious PDF — malware analysis report

Static analysis result for SHA-256 ded006cea74f90cc…

MALICIOUS

PDF

72.7 KB Created: 2021-05-12 23:36:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 20ca326ffb020cc9dcb410bf87b2bf22 SHA-1: 98181254cdc019749599aceb13f1dd06480d180a SHA-256: ded006cea74f90cc81e8cf07fdf240b9d23ce8810cb6fc9350dbc5902e9c2c0e
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting services, and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicates a high volume of links designed to appear legitimate. The primary malicious URL identified is https://xezojetit.ru/strik, which likely serves as a landing page for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://xezojetit.ru/strik?utm_term=what+is+a+content+of+a+book
    • https://cdn.sqhk.co/borefigux/bD3aMif/52735178535.pdf
    • https://dejaxunex.weebly.com/uploads/1/3/4/3/134318563/1213642.pdf
    • http://itfamily.info/whatsapp_aero_latest_versionj9pir.pdf
    • https://cdn-cms.f-static.net/uploads/4490123/normal_6036544fb19eb.pdf
    • https://dubonizu.weebly.com/uploads/1/3/1/6/131606556/fcf68b951a.pdf
    • https://mijigudi.weebly.com/uploads/1/3/4/3/134352865/jutibesemupi.pdf
    • https://cdn.sqhk.co/petebeki/iahfjin/drifters_city_hall_sheffield.pdf
    • http://nogeturafo.sportsontheweb.net/bless_the_lord_oh_my_soul_piano_chords.pdf
    • https://static.s123-cdn-static.com/uploads/4403556/normal_60052ac75959d.pdf
    • http://fringigejy.site/keeping_the_republic_7th_edition_fre9d17u.pdf
    • https://static.s123-cdn-static.com/uploads/4381971/normal_5fec21d1f12ae.pdf
    • https://cdn-cms.f-static.net/uploads/4455684/normal_5fe78e7a0fec0.pdf
    • https://nukewunokozekid.weebly.com/uploads/1/3/4/6/134678158/538dfa3dc2fa.pdf
    • http://jalazekesofijot.medianewsonline.com/behringer_inuke_nu4-6000_amplifier.pdf
    • https://pebepatesova.weebly.com/uploads/1/3/4/4/134447190/7bfc90beccb9f57.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://ledajisaweja.rf.gd/inside_out_meme_template.pdf
    • http://wogokafen.epizy.com/32930659990.pdf
    • http://viwuwijagabote.myartsonline.com/wuxetoba.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de82.bin
c722b541ee4dd7eed6f576ff94f5245465fd9e32da3ae215d1017586b69c115c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE82 5056 bytes
font_01_sfnt_off0000efcd.bin
58bad3d016b747153e11a5922277b17423f08ea55418fbf96b874855702daa3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCD 10648 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.