Malicious PDF — malware analysis report

Static analysis result for SHA-256 9de53037de4043d0…

MALICIOUS

PDF

90.5 KB Created: 2021-03-02 10:42:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: ae119280dac7b2f448fa693627ab4bb3 SHA-1: de604bb2aef04faeaf88b2ce6b947bab540a0afd SHA-256: 9de53037de4043d0c9d1140cd80deb843ae3a20e62cdbc21d63b66cc9d55a0ca
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest the document's primary function is to redirect 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://gimoguvi.ru/strik?utm_term=concepto+de+investigacion+educativa+segun+pablo+latapi PDF link annotation
    • https://cdn.sqhk.co/jirudumom/sgc0Phh/blade_wolf_vs_battle_wiki.pdfIn PDF document text
    • http://wdd13.ru/busapunekikilafafilazqstib.pdfIn PDF document text
    • https://cdn.sqhk.co/pajokiman/jcvwsUf/71616895492.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451230/normal_602ac63b2db13.pdfIn PDF document text
    • https://cdn.sqhk.co/wakewafo/Wha7hgd/skyrim_dragonbone_greatsword_id.pdfIn PDF document text
    • https://cdn.sqhk.co/levuzivanu/iriiggo/round_dining_room_tables_and_chairs_for_6.pdfIn PDF document text
    • http://goodik.fun/73867708720j0l1n.pdfIn PDF document text
    • https://cdn.sqhk.co/pubisifibuj/lghjhje/best_blade_irons_for_beginners.pdfIn PDF document text
    • http://ccckkkkk.space/the_grand_grimoire_original4yvhf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/chimie_gnrale_atomistique_et_liaison_chimique.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/65625726058.pdfIn PDF document text
    • https://s3.amazonaws.com/jotogorurekuro/dewalt_brushless_drill_set_5ah.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/mudesatelipimapuvati.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/wapking._in_punjabi_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/32764706918.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/35298442914.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000121d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121D6 5252 bytes
SHA-256: 970bf6cfcab57ee9f54771dc095eab4eff99c55fbcb79af82f762023785376ca
font_01_sfnt_off000133c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133C8 12068 bytes
SHA-256: 709b2e56e382f69159a85040fe56fb0e6b1f3307a694664ad856293e7921e53b

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