Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6c15f8241f9e030…

MALICIOUS

PDF

46.5 KB Created: 2021-06-10 23:52:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e1ab7b9ac64c1045ecec879fad1f40eb SHA-1: 121afcd1cfdd5b789f11d6f5e13f53e8545c24c6 SHA-256: e6c15f8241f9e030060d6a4e2777b666333f452d9f13e2d83ba99f9a8d4e4083
102 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files, suggesting a link farm designed to host malicious content. The document body and extracted URLs indicate a lure related to game hacks and cheats, likely intended to trick users into downloading malware. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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 https://netcdn.tw/app/431946152/nelson-diamant-hack-roblox-game-hack
    • http://apostolosandreaslemesou.com/images/roblox-tower-battles-cheats_GM431946152.pdf
    • http://apostolosandreaslemesou.com/images/will-tiktok-free-view-bot_GM835599320.pdf
    • http://apostolosandreaslemesou.com/images/how-to-get-free-robux-legit-filmz_GM431946152.pdf
    • http://apostolosandreaslemesou.com/images/coin-master-free-link-spin_GM406889139.pdf
    • http://apostolosandreaslemesou.com/images/is-roblox-free-on-pc_GM431946152.pdf
    • http://apostolosandreaslemesou.com/images/how-to-get-free-robux-and-tix-on-roblox-2021_GM431946152.pdf
    • http://apostolosandreaslemesou.com/images/coin-master-free-coins-hack_GM406889139.pdf
    • http://apostolosandreaslemesou.com/images/can-you-get-free-robux-on-roblox_GM431946152.pdf
    • http://apostolosandreaslemesou.com/images/free-robux-come_GM431946152.pdf
    • http://apostolosandreaslemesou.com/images/how-to-get-free-robux-hacks-2021_GM431946152.pdf
    • http://apostolosandreaslemesou.com/images/free-roblox-pin-codes_GM431946152.pdf
    • http://apostolosandreaslemesou.com/images/coin-master-hack_GM406889139.pdf
    • http://apostolosandreaslemesou.com/images/how-often-pubg-uc-turn-into-cancer_GM1330123889.pdf
    • http://apostolosandreaslemesou.com/images/minecraft-pocket-edition-hack_GM479516143.pdf
    • http://apostolosandreaslemesou.com/images/coin-master-free-spin-today-2021_GM406889139.pdf
    • http://apostolosandreaslemesou.com/images/free-roblox-accounts-with-builders-club-and-robux_GM431946152.pdf
    • http://apostolosandreaslemesou.com/images/minecraft-cheats-switch_GM479516143.pdf
    • http://apostolosandreaslemesou.com/images/free-robux-no-verification-or-survey_GM431946152.pdf
    • http://apostolosandreaslemesou.com/images/free-minecraft-account-and-password-generator_GM479516143.pdf
    • http://apostolosandreaslemesou.com/images/how-to-get-free-snacks-in-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005063.bin
cb26056f11dc961d8e0a9abec484f5fb9ba39a80777f923273b23b191358a5ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5063 23960 bytes
font_01_sfnt_off0000873b.bin
10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132		 pdf-font-stream PDF embedded font (sfnt) at offset 0x873B 2880 bytes
font_02_sfnt_off00009126.bin
c3729470d5648ec68cabbe40b988884fab8dc66be199ce970ade6f782ac1f5f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9126 18836 bytes

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