Malicious PDF — malware analysis report

Static analysis result for SHA-256 db3936c1d064fec1…

MALICIOUS

PDF

33.2 KB Created: 2021-07-07 02:09:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2848c27be540a47a7ee87c8b53cb5e38 SHA-1: a6386a8dc3a76c2a1956f6716308ef572b507307 SHA-256: db3936c1d064fec19322f942085fd528d390d5ccbe605b00d58b7a788b6f6cc1
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links and a link farm, strongly suggesting a phishing or malware distribution attempt. The document body and extracted URLs indicate a lure related to game hacks and cheats for popular games like Roblox and Coin Master. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/robloxhacks-game-hack
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/robux-free-2021_GM431946152.pdf
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/hack-pour-recuperer-son-conte-roblox_GM431946152.pdf
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/how-can-i-get-free-robux_GM431946152.pdf
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/free-robux-promo-codes-2021_GM431946152.pdf
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/coin-master-free-spin-ml_GM406889139.pdf
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/free-robux-codes-for-roblox-2021_GM431946152.pdf
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/coin-master-in-app-purchase-hack_GM406889139.pdf
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/free-robux-catalog-items_GM431946152.pdf
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/coin-master-free-daily-spins-and-coins_GM406889139.pdf
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/up-my-age-on-roblox-hack_GM431946152.pdf
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/hack-my-spins-coin-master_GM406889139.pdf
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/coin-master-no-download-app-but-play-for-free_GM406889139.pdf
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/at-which-game-have-free-robux-at-roblox_GM431946152.pdf
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/open-coin-master_GM406889139.pdf
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/codes-to-get-free-robux_GM431946152.pdf
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/roblox-hack-exploit-guardian_GM431946152.pdf
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/coin-master-daily-free-spins-and-coins-link_GM406889139.pdf
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/is-minecraft-free-on-pc_GM479516143.pdf
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/adopt-me-roblox-hack_GM431946152.pdf
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/how-to-hack-coin-master-apkmody_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002cdc.bin
95c94164677923d1d80c999d7da4747cf72e6dcfeee925bfeddd0ebdddf93a93
pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDC 21908 bytes
font_01_sfnt_off00005d40.bin
2ccea82525463c59d3ef013baba30ec334edef503592fdffe768c3dcf14999d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D40 18820 bytes