Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd0f852ac924350e…

MALICIOUS

PDF

76.2 KB Created: 2021-04-04 14:11:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 768efa63db320f9f9b56c54099ad3913 SHA-1: 7968ee7b4e23ab13fb8c7ecc0b15139e66d86d87 SHA-256: bd0f852ac924350ec32ecf6292c22aa9337d9a266efb4426590d33a321c11024
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to game-related search terms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://botokaw.ru/wix?keyword=dcuo+styles+feats
    • https://cdn-cms.f-static.net/uploads/4366011/normal_6026c9952d659.pdf
    • http://digitalmedialit.com/eau_urolithiasis_guidelines_2017ll27s.pdf
    • https://cdn-cms.f-static.net/uploads/4444622/normal_60515df79fbf4.pdf
    • http://feldhaus-klinker-plitka.ru/5620270413hmqme.pdf
    • http://sosyaltakipcipanelin.com/asus_4g-ac68u_lte_wifi_router_setupyicfa.pdf
    • http://electorat.org/visual_c_2010_express_vcexuflp.pdf
    • http://design-kvartira.info/canon_mx922_wireless_setuphw3bh.pdf
    • http://xodaxedepapopox.mygamesonline.org/the_devotion_of_suspect_x_reddit.pdf
    • https://cdn-cms.f-static.net/uploads/4476446/normal_603ac6528a8f1.pdf
    • https://cdn-cms.f-static.net/uploads/4498678/normal_5fd308a568859.pdf
    • http://espaceabonnes.com/mogowemanatopeborewilalbyy8.pdf
    • http://bossyonlinex.com/curse_of_strahd_miniatures_3d_printptroy.pdf
    • http://lnstagramcopyrigtservice.com/loctite_406_data_sheet2yr54.pdf
    • http://ziposodepow.mywebcommunity.org/ketogenic_diet_foods.pdf
    • https://cdn-cms.f-static.net/uploads/4482207/normal_601740d713bd5.pdf
    • http://italysummer.space/96774453827zttec.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/7003c4a8-c9cf-4135-a545-c9f747248d90/6439089014.pdf
    • http://kofaxafogi.myartsonline.com/sub_zero_fridge_repair_nyc.pdf
    • https://uploads.strikinglycdn.com/files/223607c5-9a36-475a-901a-feb67f59d415/pepowibegasetowoganaxe.pdf
    • http://gedanenek.epizy.com/butulogax.pdf
    • https://uploads.strikinglycdn.com/files/c9b3e757-7978-44f4-95d7-f7ce54634c8e/latest_covid_numbers_in_florida_today.pdf
    • https://uploads.strikinglycdn.com/files/491fac10-b1db-462f-82ac-96db2cbc5098/pearson_mathematics_class_8.pdf
    • https://uploads.strikinglycdn.com/files/4906d7ca-5ed0-4cdd-8766-f21a62142901/movig.pdf
    • http://sovotovagito.epizy.com/bunajerulerenopese.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_off0000ef2b.bin
80174c5511977525b36c148e32102f1126cd6ce2d37965409389cecb40818116		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2B 4880 bytes
font_01_sfnt_off0000ffef.bin
8d767c9071d4f7a8d69729302c25bf3c4bf6ff6d1d2fbc241735370c36b6c8f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFEF 10512 bytes

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