Malicious PDF — malware analysis report

Static analysis result for SHA-256 0aeb630b35a07681…

MALICIOUS

PDF

34.8 KB Created: 2021-06-21 16:00:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0e9f1943cc92ec6b7c3fa8767d895fa2 SHA-1: 17452c91caa27eece97acec864a2339ad3128cb8 SHA-256: 0aeb630b35a076810b079036a2069db1a71e122a60aacd25ee6666cfd993a8dd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, including one pointing to 'free-robux-pastebin-fast-game-hack', which is flagged as a game hack redirector lure. The ML classifier also strongly indicated maliciousness. The document's purpose appears to be tricking users into visiting these links, likely to download further malware or engage in phishing.

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.co/app/431946152/free-robux-pastebin-fast-game-hack PDF link annotation
    • http://kumotor.com.tw/upload/userfiles/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/zephplayz-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/how-to-get-free-robux-no-survey-or-download_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/daily-coin-master_GM406889139.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/tiktok-free-roblox-accounts-2021_GM835599320.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/free-robux-co_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/websites-for-robux_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/roblox-toys-code-free-dog_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/coin-master-hack-tool-for-pc_GM406889139.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://kumotor.com.tw/upload/userfiles/files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC8 22728 bytes
SHA-256: d067226d3ac72ff4ad4e06ed8817ec375ec295ef3aa9ecf0b12d840c7f5ea432
font_01_sfnt_off000062c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C4 19092 bytes
SHA-256: 5bfd890d84b0c14d72a786ae590b650f833002b15fe449ee91ced07c3ea68d33

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