Malicious PDF — malware analysis report

Static analysis result for SHA-256 de0b4182e877e621…

MALICIOUS

PDF

68.1 KB Created: 2021-03-03 08:27:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ccff45de72dd2665c487a9b66ea534a9 SHA-1: 29c61169a5c4105ee6dfc04189dc5abb16b8c530 SHA-256: de0b4182e877e62182b34cc7100c92b999bf5edfc06e7f26c7581a9e3dfb5563
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 confirm its malicious nature. Although no scripts were explicitly extracted, the presence of external URIs suggests the document is designed to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

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://xezojetit.ru/123?utm_term=adj+dmx+operator+384+lighting+controller
    • https://cdn.sqhk.co/tedalome/hfiieMP/77470714024.pdf
    • https://cdn-cms.f-static.net/uploads/4376098/normal_601b955e034e2.pdf
    • http://airned.ru/throne_of_glass_mini_series_box_sete5vi8.pdf
    • http://vash-fasad.live/goodsync_server_manualjyz98.pdf
    • https://wodorolijuzawex.weebly.com/uploads/1/3/4/7/134770742/bb288dc16.pdf
    • https://cdn.sqhk.co/kosifodalab/ridghlu/sky_roller_game_mod_apk.pdf
    • https://cdn.sqhk.co/bidogefapo/GcEOgcH/1933753690.pdf
    • https://cdn.sqhk.co/dogatefi/dijhhzJ/bawar.pdf
    • http://opt15.ru/dugupuvaxogawalegi8z9dh.pdf
    • https://cdn.sqhk.co/tipefimex/cifjfgg/ufc_results_tonight_reyes.pdf
    • https://cdn-cms.f-static.net/uploads/4454988/normal_600c64d6308c7.pdf
    • http://trokot-roznica.xyz/miley_cyrus_wrecking_ball_costume_pregnant9o1k8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vufupu/features_of_a_civilization_worksheet.pdf
    • https://s3.amazonaws.com/dusined/betting_tips_vip_apk.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_off0000cc5b.bin
6cea06610a566958fc45f3d137f669cf75f2cfc62ed88f23b120ef892850318c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC5B 5888 bytes
font_01_sfnt_off0000e04f.bin
5525d228d77e55107526fc43f2ab2df7ed147780a6dc2d677557fab3d8f22632		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE04F 10360 bytes

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