Malicious PDF — malware analysis report

Static analysis result for SHA-256 7199763793cf365a…

MALICIOUS

PDF

71.3 KB Created: 2021-02-22 09:55:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 31bbba5cfe58119f9c4acf5a0083b7d7 SHA-1: 41f52fb5aa31acb05f4c69af00c133dc24cec254 SHA-256: 7199763793cf365a116c8d5ea03cf2a1a43189bbbec7df6d0c0b6f3318629011
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a malicious domain, masquerading as a product advertisement. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://crophysi.ru/123?utm_term=best+buy+front+load+washer+and+dryer+sets
    • http://sipebep.22web.org/97058991242.pdf
    • https://static.s123-cdn-static.com/uploads/4405922/normal_5fca12dec8ed6.pdf
    • https://cdn-cms.f-static.net/uploads/4408336/normal_5fdaaa2ba82e4.pdf
    • https://cdn.sqhk.co/fovuxugo/JtjhFgc/armello_dragon_clan_nintendo_switch.pdf
    • https://cdn-cms.f-static.net/uploads/4451750/normal_5fdb8f08352d3.pdf
    • https://cdn.sqhk.co/xedufoga/hicjRjf/world_war_3_terror_battles_rts_mod_apk.pdf
    • https://cdn-cms.f-static.net/uploads/4381289/normal_601fa9b4b430d.pdf
    • https://static.s123-cdn-static.com/uploads/4369632/normal_5ff26502c63dc.pdf
    • https://cdn.sqhk.co/sowodopevew/ghcGzF7/dagivadideger.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/damerirazib/757699481.pdf
    • http://wagenugeti.epizy.com/tuxorigotelasines.pdf
    • http://bobiwusej.rf.gd/modarudupulodil.pdf
    • http://nividibewejoba.rf.gd/gejekokigogositadudo.pdf
    • https://s3.amazonaws.com/resisuna/metal_background_texture_free.pdf
    • https://s3.amazonaws.com/bokelur/18856012354.pdf
    • http://buguwotibiven.rf.gd/avast_free_antivirus_android_test.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_off0000d8b5.bin
520ec8629c4d60b6443084d7772c8cab401de199154984ac6f5447088c1f33c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B5 5380 bytes
font_01_sfnt_off0000eb10.bin
14fa9883b84a0b14f08b773c7312670893b7fe2f953894693e8bc96a843df1bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB10 11372 bytes

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