Malicious PDF — malware analysis report

Static analysis result for SHA-256 c46eef2bb07f53f0…

MALICIOUS

PDF

68.7 KB Created: 2021-03-14 12:16:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f58749df31b9f4b01dc0eb848f43d646 SHA-1: 740c14c8a8d45b47330a4cde177728cc74823013 SHA-256: c46eef2bb07f53f05e76fe6d97d406ef525a7c079f95466296859d8e2c114e2e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text that appears to be a lure for users searching for specific content, directing them to a malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/strik?utm_term=humayun+ahmed+movies+youtube
    • http://gijutudubesakuz.iblogger.org/dakenozi.pdf
    • https://cdn-cms.f-static.net/uploads/4457570/normal_604bb07dbfb9d.pdf
    • https://cdn-cms.f-static.net/uploads/4452373/normal_600dc970d07f5.pdf
    • https://cdn.sqhk.co/wimedizi/ehezGWi/15488034766.pdf
    • https://cdn.sqhk.co/nilesatu/gdqKbbX/tesekelaroruwar.pdf
    • https://static.s123-cdn-static.com/uploads/4383692/normal_600969a2c7d14.pdf
    • https://cdn.sqhk.co/dijabidasu/HiiY3dR/free_5_dice_game.pdf
    • https://cdn.sqhk.co/gunonutib/7hEjfgi/35251675275.pdf
    • http://kinemulawaw.sportsontheweb.net/lenovo_t420_wifi_drivers_for_windows_10.pdf
    • https://cdn.sqhk.co/bijininabex/aBibIjj/accountability_counter-_terrorism_and_civil_liberties.pdf
    • https://cdn.sqhk.co/futevanu/ehcIuAs/50172560907.pdf
    • https://cdn.sqhk.co/mirofifuba/apADggE/7625475380.pdf
    • https://cdn-cms.f-static.net/uploads/4464072/normal_600b97c554b4a.pdf
    • http://wekanisa.scienceontheweb.net/code_of_points_gymnastics.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://juruzimezez.rf.gd/hssc_clerk_answer_key_21_sep_2020.pdf
    • http://fufabufitilaf.epizy.com/jogukoxakusabove.pdf
    • http://jumajiker.rf.gd/propionic_acid_forming_bacteria.pdf
    • http://poposumezaxek.rf.gd/hospital_accountant_job_description.pdf
    • http://roxigivakupumun.epizy.com/7060404157.pdf
    • http://zajonosexerubi.epizy.com/tuzigexijinaxawenuxoruv.pdf
    • http://xajugonagegef.epizy.com/fogapozugafib.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_off0000d281.bin
27608d6c6dbb7709f13f52d95890917b7da879a949932d2167b6f152d8b3255c
pdf-font-stream PDF embedded font (sfnt) at offset 0xD281 5200 bytes
font_01_sfnt_off0000e40c.bin
858b9ff2abcbe80084173cf81b744c221683c818489841965d118c7be9b91761
pdf-font-stream PDF embedded font (sfnt) at offset 0xE40C 9864 bytes