Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f47c5b52e7eace9…

MALICIOUS

PDF

34.3 KB Created: 2021-06-30 01:21:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 5a2197192d5f9fc5333847cad1f64522 SHA-1: 4cb4602d4dc6b7a79408c7a1892302cb10a61e45 SHA-256: 3f47c5b52e7eace93b45980e98855d8285709866c87147fd07f1e4eeb7742a12
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that are identified as malicious redirectors, specifically luring users with terms like 'Roblox Dbz Rage Hack'. The primary URL, http://netcdn.co/app/431946152/roblox-dbz-rage-hack-game-hack, is flagged as a known malicious redirector. The document body and heuristics indicate a lure for game hacks and generators, suggesting a phishing or scam attempt to redirect users to potentially harmful sites.

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.co/app/431946152/roblox-dbz-rage-hack-game-hack In PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/free-ss-executor-roblox_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/glitch-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/roblox-ultimate-driving-v3rmillion-free-gamepass_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/how-to-hack-accounts-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/free-pet-treats-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/free-roblox-promo-code-genarator_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/music-hack-2021-roblox_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/robux-premium_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/master-game_GM406889139.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/free-robot-animation-roblox_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_off00002f16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F16 22444 bytes
SHA-256: e215bc6c96bfe22cfc9ff7bfad0a3a90a7b9dcffbd4fa18d638a76ed7b45b725
font_01_sfnt_off0000612a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x612A 18908 bytes
SHA-256: ca976dd9ad29b8dbedb0e63e928f258076cf21fc211f3882d817ab6a73d68631

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