Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9676ab78e13f839…

MALICIOUS

PDF

35.5 KB Created: 2021-07-04 12:05:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b6b9affe374cdf502c14196ca38b3410 SHA-1: a5d5b6c5de1d0f6d2682bc7195fa17c090c1aa93 SHA-256: f9676ab78e13f83999438319f5af5fa53581a7a954c9e0dc01b6d5d24e4f10b0
62 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and references to game hacks, strongly suggesting a lure for users seeking cheats or exploits. The ML classifier and heuristics indicate malicious intent, likely to deliver a second-stage payload or redirect to a malicious site. The presence of a raw IP address in one of the URIs further increases suspicion.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/431946152/roblox-how-to-make-gui-hack-game-hack
    • http://103.30.145.97/__statics/gudangsoal/files/how-to-get-free-robux-for-real_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/games-that-actually-give-you-free-robux_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/hacked-client-for-minecraft-bedrock_GM479516143.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-tiktok-followers-no-human-verification_GM835599320.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/oprewards-free-robux_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/minecraft-free-install_GM479516143.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/roblox-free-skin_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/como-puedo-hackear-en-roblox_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/roblox-apocalypse-rising-hack_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/roblox-hack-tool_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-coin-master-spins-blogger_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/hacks-for-sprinting-sim-roblox-for-download_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/roblox-bee-swarm-simulator-cheats_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/4-tik-tok-free-followers_GM835599320.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-robux-2021-no-survey_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-firebird-card-free_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/wurst-client-112-2_GM479516143.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/how-to-play-minecraft-for-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032ab.bin
e2516eaa85a0e65ebb69635e244cac2c899e97a6a70ac7112413048fc3fcfd99
pdf-font-stream PDF embedded font (sfnt) at offset 0x32AB 22800 bytes
font_01_sfnt_off00006523.bin
906111d5a414b9f80f5d054d8aa2cb215bf7af77d55865c97e764b379260e977
pdf-font-stream PDF embedded font (sfnt) at offset 0x6523 19276 bytes