Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a31d88959a63b02…

MALICIOUS

PDF

33.1 KB Created: 2021-06-25 14:00:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5fbc5c91363163a1c49e07f78eb7c531 SHA-1: 0816244d539081873d718262f6cc27d29426ec1d SHA-256: 1a31d88959a63b026dd405bf77603a9dd350ac1afc7fc0e1b179417c93c6b6e1
102 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which are related to game cheats and free in-game items. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, and the 'SE_DOWNLOAD_BUTTON' heuristic suggests a call-to-action. The primary URL points to a page about 'how to speed hack in swordburst 2 in roblox game hack', indicating a lure for users seeking exploits or cheats. This suggests the document is designed to drive traffic to potentially malicious websites or initiate downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/how-to-speed-hack-in-swordburst-2-in-roblox-game-hack
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/coin-master-free-spins-ios-2021_GM406889139.pdf
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/free-coin-master-spins-blogger_GM406889139.pdf
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/free-tiktok-bots_GM835599320.pdf
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/how-do-you-install-minecraft-for-free_GM479516143.pdf
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/how-to-cheat-in-roblox-bad-business_GM431946152.pdf
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-games_GM431946152.pdf
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/minecraft-pocket-edition-free-apk_GM479516143.pdf
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/coin-master-play-online-free_GM406889139.pdf
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/roblox-free-skin_GM431946152.pdf
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/roblox-free-robux-codes_GM431946152.pdf
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/get-free-spins-coin-master_GM406889139.pdf
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/coin-master-free-spins-cheat-codes_GM406889139.pdf
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/free-spin-link-coin-master-app_GM406889139.pdf
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/free-robux-com-roblox_GM431946152.pdf
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/free-games-like-coin-master_GM406889139.pdf
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/free-coins-and-spins-in-coin-master_GM406889139.pdf
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/minecraft-free-minecoins_GM479516143.pdf
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/daily-free-spins-coin-master_GM406889139.pdf
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/minecraft-build-hacks_GM479516143.pdf
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/coin-master-free-spin-app-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002b6c.bin
7302a7dc12e242a91697e33a246a3cf1b9b32229b24a00b6be27b4620ed9c4b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B6C 21620 bytes
font_01_sfnt_off00005acb.bin
e7835bde1b00dcb42b9bc8bc2292455a37e7844002e2c85980eb5b238bd4576b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ACB 19540 bytes

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