Malicious PDF — malware analysis report

Static analysis result for SHA-256 e86b83363ccf5a41…

MALICIOUS

PDF

86.7 KB Created: 2021-03-10 17:53:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fb493d7a498aec731ac5adf18d7a33d SHA-1: 7881131bd1dca194aa931176e2c3477d2c48e804 SHA-256: e86b83363ccf5a4181b3eb550276cf10d90660dfaf1650baa28e6e1e7f2d059c
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, likely to serve a phishing page or download further malware. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with a phishing lure disguised as a technical document. No scripts were extracted, but the presence of external URIs suggests an attempt to redirect the user to a malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mezovuduw.ru/wix?keyword=nissan+xterra+manual+pdf
    • https://cdn.sqhk.co/bogijifaviba/ijacigr/ripebi.pdf
    • https://cdn-cms.f-static.net/uploads/4453721/normal_5fd8f32bd07c3.pdf
    • https://cdn.sqhk.co/xafemepino/R4XEjbw/25045483363.pdf
    • https://cdn.sqhk.co/mexovaru/jjhaidu/20743865182.pdf
    • https://static.s123-cdn-static.com/uploads/4476936/normal_5fdeea03e39bc.pdf
    • https://cdn.sqhk.co/kupemopo/U2iFjhy/xogijanivovetanejap.pdf
    • https://cdn-cms.f-static.net/uploads/4416512/normal_60250c851a48d.pdf
    • https://cdn.sqhk.co/mojekuvugise/gdhbge1/arkham_horror_card_game_deck_box.pdf
    • https://cdn-cms.f-static.net/uploads/4481157/normal_6036c2d3f119d.pdf
    • https://static.s123-cdn-static.com/uploads/4468551/normal_5fcdf68029558.pdf
    • https://cdn.sqhk.co/nuditufu/ijaiaU9/95628248368.pdf
    • https://cdn.sqhk.co/govonesed/Lv6ricq/85650282293.pdf
    • http://pusuwanoxanopo.22web.org/nevajaxorilebobi.pdf
    • http://jusibebobekig.iblogger.org/28570015104.pdf
    • https://cdn.sqhk.co/limexofure/jgujcjf/winudivukukitoguravewiri.pdf
    • https://cdn-cms.f-static.net/uploads/4489839/normal_5fd665d225951.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://norafidu.epizy.com/tokuguwagipubuluwapo.pdf
    • http://dusetelonuzaj.epizy.com/vmware_esxi_5._5_crack.pdf
    • http://rijejonusax.rf.gd/86686367910.pdf
    • http://bomafedugu.epizy.com/48141763886.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010342.bin
acb3a4468ea575129e7e8dac8e52a3a75b64c9aad9b19a86cbf9c7c9bdc73bd9
pdf-font-stream PDF embedded font (sfnt) at offset 0x10342 5224 bytes
font_01_sfnt_off000114fc.bin
caf908546509e669100c040b568de87349553a81a0bdaf1b6597cffa16a9629d
pdf-font-stream PDF embedded font (sfnt) at offset 0x114FC 10384 bytes
font_02_sfnt_off000138c4.bin
2d958bd008b8db5b33092f112e99c856adbcc0a100e950d14ff814b784be6357
pdf-font-stream PDF embedded font (sfnt) at offset 0x138C4 16060 bytes