Malicious PDF — malware analysis report

Static analysis result for SHA-256 7939a6ccdce2d384…

MALICIOUS

PDF

42.3 KB Created: 2021-05-15 04:31:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 4deb302b37318672d81954aa39cd6fac SHA-1: a9b3e578f76a4134ea4a31084016656d1d47fbc6 SHA-256: 7939a6ccdce2d38473030ff269159b4a8d6e870f123268454f9f5aeabf2f404d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic firing for a game hack redirect lure, pointing to a URL associated with free in-game currency. The document body and numerous extracted URLs reinforce this theme, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-free-spin-and-coins-links-game-hack PDF link annotation
    • http://familymn.com/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://familymn.com/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://familymn.com/images/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
    • http://familymn.com/images/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://familymn.com/images/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://familymn.com/images/get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://familymn.com/images/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://familymn.com/images/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://familymn.com/images/coin-master-free-spins-link-31-march-2021_GM406889139.pdfIn PDF document text
    • http://familymn.com/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://familymn.com/images/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://familymn.com/images/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://familymn.com/images/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • http://familymn.com/images/minecraft-survival-free_GM479516143.pdfIn PDF document text
    • http://familymn.com/images/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://familymn.com/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://familymn.com/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://familymn.com/images/mathep_GM431946152.pdfIn PDF document text
    • http://familymn.com/images/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://familymn.com/images/coin-master-fan-club_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_003_off00004952.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4952 25104 bytes
SHA-256: 540646ee0e4294c6767c68720ea326f66371844f7728b0efeb3de6929b7d7002
font_01_sfnt_off00008319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8319 18228 bytes
SHA-256: ab1c4cdc214a6baf81a15e2f62a40ea9cfbbbf407f0f3dd1c7564e467cf0dae2

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