Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc48c3adc341d5c2…

MALICIOUS

PDF

36.1 KB Created: 2021-07-01 08:45:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: ee3d052b2bc5330f9b50c405dec2f2a6 SHA-1: 41065aa0bd5e869dceefc6d5fb7b376d91774452 SHA-256: bc48c3adc341d5c2bbd5266db5f1ab24e3cdcdb7434dd14498442a9217c0636d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector. The document body and heuristics indicate a lure for game hacks, specifically mentioning 'Cheat Engine Roblox Jump'. The primary malicious URL identified is http://netcdn.co/app/431946152/cheat-engine-roblox-jump-may-2021-game-hack, which is likely used to deliver a second-stage payload or lead the user to a phishing site.

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/cheat-engine-roblox-jump-may-2021-game-hack In PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/roblox-hack-ohne-handynummer_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/more-robux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-free-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-hacks-to-get-spins_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-hack-roblox-games-without-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/shadowslayefighter-in-roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/roblox-1x1x1x1-hack-crazy_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/fly-hack-download-roblox-2021-gameguardian_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/arcane-adventures-roblox-14-hack_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/cheat-engine-roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-robux-obby-limited-time-only_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-admin-robux_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_off000030ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30BA 22900 bytes
SHA-256: bd9fef5e58035a325cd1c4658565807f360a495d4f96c72ed26597434493c9ce
font_01_sfnt_off00006431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6431 20396 bytes
SHA-256: eee3700372d1bfa9f9bd331afa95f86e509ea8d46587adbf793ddda4ef3ebde3

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