Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d85080072093ec0…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 08:44:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 96f9e60819f8b8b29f16160cac89c13f SHA-1: a387dae8fc10d999f0b3bb06603c3edac4635b56 SHA-256: 2d85080072093ec07e1a9b8d98ed1e47531dccae402575b3fa74fc6b98944128
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a high-severity heuristic indicating it links to a game hack redirector. The document body and embedded URLs reinforce this, pointing to sites offering 'hacks' for games like Coin Master and Roblox. The primary IOC is the redirect URL, which likely leads to a site hosting further malicious content or exploits.

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/406889139/hack-para-coin-master-singapore-game-hack PDF link annotation
    • http://library.gkigadingserpong.org/repository/how-to-hack-roblox-jailbreak-on-computer_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-make-free-shirts-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/cheat-roblox-pet-simulator-money_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-baton-free_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-jailbreak-money-hack-download-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/cheats-for-mega-gun-obby-roblox_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-hack-cheat-tool_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roxpoes-roblox-exploits-and-hacks_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/static-moonactive-net-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-hack-tokyo-ghoul_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-hack-activegamer_GM406889139.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
stream_002_off00002fe2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FE2 22548 bytes
SHA-256: d015e4bb0362021df3a35b711e2cc6e3460388e0ec2fafd53bd6d7da8cbc6d45
font_01_sfnt_off000061b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B0 18332 bytes
SHA-256: 7a06b268a0635f8a5522d84c5da66ca6895134d44174cfdc6223da1b32f7b83a

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