Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f3de9cd6ef0a1e9…

MALICIOUS

PDF

70.9 KB Created: 2021-02-19 02:33:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 914e875851685b4ef6ce03d64cb6767d SHA-1: cfc053757e2129bbadc8e2e6dd7c334b7a764f7f SHA-256: 3f3de9cd6ef0a1e917874e00e0d40efca3d96d6d9f6fc0ed9a127a4fd9c94565
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 ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly flagged this PDF as malicious. The embedded URL likely leads to a phishing page designed to trick users into providing sensitive information, possibly disguised as content related to '50 Shades Freed Netflix USA'. No scripts were extracted, but the presence of the malicious URL and the strong heuristic detections indicate a phishing attempt.

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://leonvi.ru/strik?utm_term=50+shades+freed+netflix+usa PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4371269/normal_5fddcc19833a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489969/normal_601cefb931e70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496818/normal_5ffa785a7b430.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/5xBibha/mountain_climb_4x4_offroad_car_drive_download_apkpure.pdfIn PDF document text
    • https://cdn.sqhk.co/kutogudofi/hrfkiiL/flip_or_flop_divorce_cheating.pdfIn PDF document text
    • https://cdn.sqhk.co/vapatibu/t59gghQ/crash_bandicoot_racing_ps4_cheats.pdfIn PDF document text
    • http://hyipinvest.site/17146944557mh4t1.pdfIn PDF document text
    • http://goossyy.online/nagiligelihrm.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/f98jjge/world_cricket_battle_game_play_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476147/normal_601369e89c797.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458631/normal_6006262400358.pdfIn PDF document text
    • http://rubyshup.space/zikekedejabekiisa9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392470/normal_601d709783758.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476294/normal_60062c7b42c2b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422877/normal_5ffecf90cc903.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411001/normal_6000971984873.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492573/normal_600c8b9e7a977.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/fapuvojivojakuxod.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d743.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD743 5232 bytes
SHA-256: fdfe98d62c7681e34d7ca81829f4288ac4e6eae13b9fe1f8e363c43c8941bd3c
font_01_sfnt_off0000e911.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE911 11040 bytes
SHA-256: dc57b60065b45f1321073cb8cc90b1d27cc70b4091cee465e45fb68e8888ddd0

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