Malicious PDF — malware analysis report

Static analysis result for SHA-256 c402b12d8d01e80d…

MALICIOUS

PDF

33.3 KB Created: 2021-06-30 10:22:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 6aa99801fd1e1a057820e815874805e4 SHA-1: 0973cd5d22649a0d4144cedd8d71d1b027f998c9 SHA-256: c402b12d8d01e80d795d7db24e786740e8e1fa5e878fdd5171dd608b73c99667
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks, specifically for Roblox, directing users to a known malicious redirector. The ML classifier strongly flagged this PDF as malicious. The embedded URL is designed to trick users into downloading potentially harmful content, likely a second-stage payload.

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-salvage-hack-game-hack In PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-look-good-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/can-you-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/btools-download-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-hack-mago_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/project-alpha-roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-no-download-no-verification_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/hack-roblox-apk_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/como-hackear-roblox-com-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-script-pastebin-10-29-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/youtube-free-robux-november-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-promo-dress-codes-for-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/top-10-mejores-hacks-para-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-join-me-free-builder-club-in-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/pokemon-go-free-pokecoins-no-human-verification_GM1094591345.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA5 21552 bytes
SHA-256: c62a61946a80d064417c4d9a06c27a5466aae4588429600e99bbf44870217ed9
font_01_sfnt_off00005db7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB7 18768 bytes
SHA-256: c6a4e3ac98a9e012ea23aadc9204395755f479284316de944bb79f7331cc7efb

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