Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d76b26a1e3f8053…

MALICIOUS

PDF

35.4 KB Created: 2021-07-08 00:35:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7da58af7afa2ace5a1f80cf4357a19ba SHA-1: ea939a27264770c41e7f766c4ce075971723b9af SHA-256: 2d76b26a1e3f80533f00585cfe3312c623ad2c2c8a104183590dd2398421142c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external resources, many of which are disguised as guides for hacking games like Coin Master and Roblox. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a tactic to attract users with deceptive content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent, likely leading to further malware downloads or phishing pages.

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/406889139/coin-master-game-hack-kaise-kare-game-hack
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-using-sql_GM431946152.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-latest-version-hack_GM406889139.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/how-do-you-get-free-food-in-coin-master_GM406889139.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/hack-coin-master-spin-apk_GM406889139.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-links-for-coin-master-2021_GM406889139.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/real-coin-master-hack_GM406889139.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-hacks-for-free-spins_GM406889139.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-mster-free_GM406889139.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/pokemon-go-free-spoofer_GM1094591345.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-counter-blox_GM431946152.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/como-ser-hacker-en-roblox-atravesar-paredes_GM431946152.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-robux-no-downloading-apps_GM431946152.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/minecraft-free-download-mac-full-version_GM479516143.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/roblox-hack-game_GM431946152.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-roblox-clothes-and-hair_GM431946152.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-trading-group_GM406889139.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/pubg-600-uc-price-in-pakistan_GM1330123889.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-free-coins-no-human-verification_GM406889139.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/cheat-engine-67-roblox_GM431946152.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/comment-hacker-pour-avoir-des-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000033ed.bin
22607f1472bde0e8435c65afa0b7ad0e0e50a3b050aaba4e856d7d20470567a2		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33ED 23076 bytes
font_01_sfnt_off000067b6.bin
a8389fbf181df9705b3255eb4c4696b43f8c72abea2faab980217b88f505b556		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67B6 18264 bytes

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