Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dbba9d2544ef2c0…

MALICIOUS

PDF

43.9 KB Created: 2021-05-15 11:30:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ed6e3946dbce09107cffce314738b2f6 SHA-1: 8529c4b6d25f8e98a6eba71e5997f129d322340c SHA-256: 9dbba9d2544ef2c05688e30e54be71fef578099f966f30b606aa00b43bb5a734
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/real-hack-for-coin-master-game-hack PDF link annotation
    • https://omhelsjehart.nu/images/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
    • https://omhelsjehart.nu/images/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://omhelsjehart.nu/images/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
    • https://omhelsjehart.nu/images/lots-of-robux_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://omhelsjehart.nu/images/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • https://omhelsjehart.nu/images/free-spins-and-coins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://omhelsjehart.nu/images/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • https://omhelsjehart.nu/images/coin-master-hack-pc-cheat-engine_GM406889139.pdfIn PDF document text
    • https://omhelsjehart.nu/images/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://omhelsjehart.nu/images/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • https://omhelsjehart.nu/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/robux-generator-that-works_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://omhelsjehart.nu/images/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • https://omhelsjehart.nu/images/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000475a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x475A 24708 bytes
SHA-256: b12db48bd4f1508f1a0f25d988eccad158f57a4206795462981aacf1d73d0b2f
font_01_sfnt_off0000807b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x807B 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008a2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A2D 17956 bytes
SHA-256: c3bff0caf4b3e4fab2d80157ad4f14f97eaac11d6adb17aae1b51a270053db42

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