Malicious PDF — malware analysis report

Static analysis result for SHA-256 b61cc5fecf2562ac…

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 19:51:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f7b56a48157e65fc3aa0080de92329e5 SHA-1: ac3b090f5e29e2291ef9ae4528b7a903a24e9a56 SHA-256: b61cc5fecf2562aced8684c2a55e66d16cca8a60a15a7d587f9964a60d5c3dfe
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple embedded URLs that redirect to websites offering game hacks and generators, a common lure for malware distribution. The ML classifier strongly flagged this PDF as malicious, and the heuristics indicate it's designed to trick users into clicking links for 'free generators' or 'game hacks'. No scripts were extracted, but the document's structure and embedded links suggest it's a downloader or redirector for malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/479516143/minecraft-bedrock-edition-pc-free-game-hack PDF link annotation
    • https://pspmrsmbpulau.com/opac/repository/how-to-get-free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/pokemon-go-free-9-nerf_GM1094591345.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/how-to-hack-robux-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/free-coin-master-stuff_GM406889139.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/how-to-hack-roblox-easy_GM431946152.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/can-we-hack-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/how-to-enable-speed-hack-on-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/roblox-cheat-net_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/coin-master-redeem-code-free_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/coin-master-hack-root_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/coin-master-village-4_GM406889139.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/roblox-hack-how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/how-to-get-free-robux-hack-on-tablet_GM431946152.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/lumber-tycoon-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/free-robux-codes-2021-generator_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/roblox-hack-how-to-load-lua-gui_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_off000030cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30CF 21836 bytes
SHA-256: 3070f913e04a6aa78b7734b2a509bc4d0f2a45ee36ed77d7ddbe45ab06aa780b
font_01_sfnt_off00006106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6106 18712 bytes
SHA-256: fd9b8b130383843a433d26d2da76e24e17b9b33ae910cb53f97401bca5a2067b

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