Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8d7d4116cb5ec87…

MALICIOUS

PDF

33.3 KB Created: 2021-07-06 21:33:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 90208358bee13e96e7715518d65b9d14 SHA-1: fbad292a78a2ae5452a57d2c47eb2e4c5b07fdbf SHA-256: c8d7d4116cb5ec87207a95240569394f3a17f2af9e7a9c72dfe9e8c3a84a39ce
82 Risk Score

Malware Insights

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

The PDF file contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector. The document body and extracted URLs reinforce this, pointing to a lure for free in-game currency or hacks. The primary IOC is the malicious redirector URL.

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/free-minecraft-maps-pe-game-hack PDF link annotation
    • http://stitqi.ac.id/website/repository/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/robux-hack-v6-5-mythical-chaos-pastebin_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/free-online-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/easy-robux-com_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/com-roblox_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/coin-master-free-spin-game_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/roblox-moderators_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/pokemon-go-fest-free_GM1094591345.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/roblox-games-for-free-online-for-kids_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/hack-game-coin-master_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
font_00_sfnt_off00002f20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F20 22228 bytes
SHA-256: 6a9f3f00821e0c3c4d414d167e6d2235cb54017370430590efd8ac640bb86b02
font_01_sfnt_off00005fff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFF 18188 bytes
SHA-256: 227dffac5a514882bf8528649aaca93eb85822c51cc02c6a5851669c4b8ec629

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