Malicious PDF — malware analysis report

Static analysis result for SHA-256 c235be010b462549…

MALICIOUS

PDF

75.3 KB Created: 2021-03-29 22:11:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6926288a6742beb55150546b68b5c404 SHA-1: 9514607d48ea5bf789533cfcaeb5fa21e801b7cf SHA-256: c235be010b4625491c8a6d478abc3ba82a7998b1c559371637f9e46893229615
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, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of the file. Although no scripts were explicitly extracted, the presence of external URIs suggests the document is designed to redirect users to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://kuzutuzo.ru/strik?utm_term=how+to+replace+vivint+thermostat+battery
    • http://itslm.fun/zakaseduvzjcx.pdf
    • http://wumewil.sportsontheweb.net/repijewewobarelu.pdf
    • https://wukarogokemek.weebly.com/uploads/1/3/0/7/130739107/gegusipemasuxud.pdf
    • https://rudusixan.weebly.com/uploads/1/3/0/7/130775573/7914313.pdf
    • http://feedbacrnz.space/fgo_us_apkpurejmns5.pdf
    • http://trokot-shopnew.online/sibebefexewuahm7.pdf
    • http://zhenskiizhurnal.ru/is_red_13_in_ff7_remakeio380.pdf
    • https://rinotawobuv.weebly.com/uploads/1/3/4/7/134768279/keruxufomiza.pdf
    • http://normaa-id.com/photoshop_tutorial_step_by_step_in_hindikavq4.pdf
    • http://sibatike.getenjoyment.net/aqueous_kcl_conduct_electricity.pdf
    • https://static.s123-cdn-static.com/uploads/4417643/normal_5fc83c0395172.pdf
    • https://static.s123-cdn-static.com/uploads/4413226/normal_5fe00512e4199.pdf
    • https://mofugitapab.weebly.com/uploads/1/3/4/7/134728490/6148231.pdf
    • http://forisawidokomor.sportsontheweb.net/printable_household_budget_worksheets.pdf
    • https://turamidiwirak.weebly.com/uploads/1/3/4/3/134340523/lanikuzu_kevutovaridaxo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/fc0386ea-832d-4bb5-aa1d-e1e13b563bed/infinix_note_7_lite_price_in_pakistan_2020_whatmobile.pdf
    • https://uploads.strikinglycdn.com/files/af3e14dd-afb7-4b27-86f9-de8d86ae5274/34590978697.pdf
    • http://xanedemu.onlinewebshop.net/degodigiperurigowojasol.pdf
    • https://uploads.strikinglycdn.com/files/18368684-ac69-4c76-947f-f886e920d458/93356943498.pdf
    • https://s3.amazonaws.com/polojuliragam/79567453591.pdf
    • https://s3.amazonaws.com/simujix/android_adb_settings_command.pdf
    • https://s3.amazonaws.com/vuliwisuwig/18162710267.pdf
    • https://s3.amazonaws.com/webipejonavuv/bloons_td_6_10._1_apk.pdf
    • https://s3.amazonaws.com/risalenefazozo/how_do_you_fix_a_clogged_insinkerator.pdf
    • http://wovibojo.onlinewebshop.net/xunixuvuvokiter.pdf
    • https://uploads.strikinglycdn.com/files/ec45b6a2-ac40-46c3-a28f-8097f6b7e605/xiwinopijuwev.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_off0000e988.bin
94db58e6920c860995805a57cbecb62c4bd5dc9b4fe690175684364415c7e446		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE988 5528 bytes
font_01_sfnt_off0000fc3d.bin
56613752169a493931169701289a9d819a50c510a9c07715f60fc626780096d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC3D 10120 bytes

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