Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6dd39ff94fdc7cc…

MALICIOUS

PDF

33.1 KB Created: 2021-06-29 14:54:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 427645bead1b9260af77ec522c6ff885 SHA-1: 142b6afadeed2521012d0b4bc6479266fdd1f682 SHA-256: f6dd39ff94fdc7ccbff19c7e1c548bb7cc4cdf32d6e9fd16d3dfa1fc5bb638c2
82 Risk Score

Malware Insights

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

The PDF document uses a lure related to game hacks and generators to entice users to click on a link. This link, http://netcdn.co/app/431946152/free-games-on-roblox-you-can-copy-game-hack, redirects to a malicious domain, indicating a likely attempt to download and execute a secondary payload. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/free-games-on-roblox-you-can-copy-game-hack PDF link annotation
    • http://smpn1sda.sch.id/slims/repository/coin-master-com_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/aimbot-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-stuff-on-roblox-mobile_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-online-free-spin_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-roblox-generator-for-roblox_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-glitches-roblox_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/woman-roblox_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-account-hack-2021_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-spins-2-5-2021_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_off000029d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29D8 22216 bytes
SHA-256: b790ac40cba4e26b5e2ff16af673aae14621f56d92ffe2859df3163af420f93d
font_01_sfnt_off00005b28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B28 19568 bytes
SHA-256: aaa9f026a6531082c6381a2e833a7f5bebb376246648f68ad45912755a910f29

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