Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0d2489e7534e112…

MALICIOUS

PDF

34.8 KB Created: 2021-07-03 22:31:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: ef22053d14d40c596f6c889a1bb91046 SHA-1: fec49d0a26d4259fd729492d4c1073ea5200643f SHA-256: f0d2489e7534e11240e7687b151f7d3a3a34e5f9510db138bbd2ab85b32b90fc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and generators to entice users. It contains multiple links to redirector infrastructure, which in turn host further malicious PDF files. The ML classifier strongly indicates malicious intent, and the presence of numerous links to potentially harmful content supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://netcdn.tw/app/431946152/free-roblox-avatar-ideas-game-hack In PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-robux-no-youtube_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-packages-on-roblox_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/roblox-people-girl_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-hack-extension_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-builders-club-in-roblox-ipad_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-robux-jefftec_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/pokemon-go-free-3d_GM1094591345.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/fast-robux-online_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3033 22584 bytes
SHA-256: ba7436fa13c9bf931e32a8ebf2c26bd1d5bdb4ae89c5785fc6b2b6ae3caa7876
font_01_sfnt_off000062b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B0 19040 bytes
SHA-256: ad2d59536519275d6c005bbb7f6b17868ed93de8c720afdca884edb772968032

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