Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f0c6f052724e72e…

MALICIOUS

PDF

85.2 KB Created: 2021-03-16 01:29:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9cee4ab651c404898b150c6ce9cd823e SHA-1: ee6d4cc9e35b14d8f27c7f8e9ec10e6461eaff69 SHA-256: 9f0c6f052724e72efa1f4af0c3c9d43bcb4b9a8fda5b5faf49457fc5094c2808
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. It contains numerous embedded URLs, with one specifically pointing to 'soxebez.ru' and disguised as a search result for 'swtor vanguard tank'. This suggests the document is designed to redirect users to a potentially harmful site for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/wix?keyword=swtor+vanguard+tank
    • http://1xbet-regi.site/gupafutowojifu19mep.pdf
    • https://cdn.sqhk.co/sirazisiluz/RVlRRSC/68218907397.pdf
    • http://wivaserana.mywebcommunity.org/36392847077.pdf
    • http://xivazokib.medianewsonline.com/wamujovitizoxojuxe.pdf
    • http://fizarumokugafu.mywebcommunity.org/python_arithmetic_operators.pdf
    • https://cdn.sqhk.co/sedazozesufu/gjpj8gf/talking_ben_the_dog_appvn.pdf
    • https://cdn.sqhk.co/modajili/hjjejcn/lonesufepowapej.pdf
    • http://wisitens.online/letter_from_birmingham_jail_purpose84qwz.pdf
    • https://cdn-cms.f-static.net/uploads/4369933/normal_5fe9574b4dcba.pdf
    • http://senteber.site/dimelaxopixe3fhv9.pdf
    • https://cdn-cms.f-static.net/uploads/4388426/normal_6034d00d66b31.pdf
    • https://cdn.sqhk.co/bagojenul/gjdhjhg/short_film_festivals_for_students.pdf
    • http://zujadise.scienceontheweb.net/ganongs_review_of_medical_physiology_24th_edition_free.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://538d8494-0c7d-401a-b890-0485f6bc7bca.filesusr.com/ugd/29c71c_192a3030b32b4f3f84e176453cdd9602.pdf?index=true
    • http://pevogikuxupeja.onlinewebshop.net/where_can_i_buy_parts_for_my_shark_vacuum.pdf
    • https://uploads.strikinglycdn.com/files/f3e73dc2-7456-44e6-afc5-3f65bec12080/why_phone_charger_not_working.pdf
    • https://uploads.strikinglycdn.com/files/d8d4747b-554e-4170-a57d-53d7deb5617f/what_was_chess_originally_called.pdf
    • https://2a983b51-2e13-4971-8c1f-a5bca3ab4353.filesusr.com/ugd/e1a791_d5adcaae9d5d4a88a9f9bbf5ef3b374d.pdf?index=true
    • https://uploads.strikinglycdn.com/files/fd8c4576-b42b-4563-8ba8-6e33a97ccaa2/cisco_wireless_access_point_air-lap1142n-a-k9_configuration.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_off00010ee0.bin
7847ea54ac8ea3b6ec7fd5cc125f3216965fd50bb19a68c9ff9ac8eb527f2213		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10EE0 5100 bytes
font_01_sfnt_off00012068.bin
f4b40c5c80b7603314877b6d9118989ed32f988b40c6d4a700b7bba8c119317b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12068 11092 bytes

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