Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d09d1e4e060c518…

MALICIOUS

PDF

65.4 KB Created: 2021-03-12 02:16:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c7c2430e16a0dded7737e3642b2837a SHA-1: ea24e697daaea4db1a45ca1bcac6857a9ed12290 SHA-256: 2d09d1e4e060c518269d9c303e1db4a84c3584cbdc71938c85ef7729a8301b82
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by both heuristics and a machine learning classifier as malicious. ClamAV also detected it as a phishing trojan. The presence of an external URI strongly suggests an attempt to redirect the user to a malicious site for further exploitation, such as credential harvesting or malware download.

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://jumiwimov.ru/123?utm_term=janatha+garage+movie+bgm+song
    • https://static.s123-cdn-static.com/uploads/4387933/normal_60089b9bad8a6.pdf
    • https://cdn.sqhk.co/begorukenega/NLZPiic/26688402611.pdf
    • https://cdn.sqhk.co/xajamenujo/ggDrgig/mastercraft_new_building_game.pdf
    • https://cdn-cms.f-static.net/uploads/4464539/normal_601ccfd3e98a3.pdf
    • https://cdn.sqhk.co/mozigizax/2HiaSgh/sandwich_recipes_for_kids.pdf
    • https://cdn.sqhk.co/tititafoza/crgjVau/video_game_box_monthly.pdf
    • http://vawagizipul.iblogger.org/91242768472.pdf
    • https://cdn.sqhk.co/numokafas/NgijjDO/ftdi_drivers_macos.pdf
    • https://cdn.sqhk.co/dojopaxitovi/cijgjhc/filevikade.pdf
    • https://cdn.sqhk.co/xuzuvazol/FjfpBgc/top_wedding_cake_ideas_2020.pdf
    • https://cdn.sqhk.co/nilamemiw/iYKNifb/8867289437.pdf
    • https://cdn.sqhk.co/sifajoxojif/jgcshcr/zopezavegana.pdf
    • http://pasanubilop.iblogger.org/ronopabu.pdf
    • https://cdn.sqhk.co/tejurorado/2hhgjKM/96582568254.pdf
    • https://cdn.sqhk.co/gudijupimeb/jcAV2gM/88146317557.pdf
    • http://josibazuveloj.iblogger.org/56463880074.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fofuxolisemaxim.epizy.com/how_much_do_cleaners_get_paid_per_hour_uk.pdf
    • http://godubaxedija.rf.gd/rafuvidosuloponuto.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_off0000c33e.bin
ad3afd333872f9c702d88208fdbc8620b141ef0e2f912d2fa621f2c75504e5eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC33E 5256 bytes
font_01_sfnt_off0000d4fe.bin
ecffbbb6e530a4e0cae92aecdc58f065255f5e83f56c08b04768aac65433c5ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4FE 10664 bytes

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