Malicious PDF — malware analysis report

Static analysis result for SHA-256 f52a6cd6f9c292cc…

MALICIOUS

PDF

49.1 KB Created: 2021-05-13 10:05:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 458a18d5ce81990533a1aa5a7ffd449a SHA-1: 5933921fbcac02b4b3ff5ee40f780c7d2c1a68d0 SHA-256: f52a6cd6f9c292ccd89cbd3d39d1f30346558c0f14c5b44595d12055dabd9c3a
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are presented as 'hacks' or 'cheats' for popular games like Minecraft and Roblox. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a malicious intent to drive traffic to potentially harmful content. The presence of a 'download button' lure further supports this. The document's primary purpose appears to be social engineering users into clicking these links, likely leading to malware downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

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.xyz/app/479516143/minecraft-diamond-finder-hack-game-hack
    • https://hotelartskathmandu.com/userfiles/files/how-to-hack-someones-roblox-account_GM431946152.pdf
    • https://hotelartskathmandu.com/userfiles/files/robux-free-promo-codes_GM431946152.pdf
    • https://hotelartskathmandu.com/userfiles/files/windows-10-minecraft-hacks_GM479516143.pdf
    • https://hotelartskathmandu.com/userfiles/files/free-robux-codes-no-verification-2021_GM431946152.pdf
    • https://hotelartskathmandu.com/userfiles/files/robux-fun-hack_GM431946152.pdf
    • https://hotelartskathmandu.com/userfiles/files/free-roblox-toy-codes-not-used_GM431946152.pdf
    • https://hotelartskathmandu.com/userfiles/files/coin-master-daily-spins-and-coins_GM406889139.pdf
    • https://hotelartskathmandu.com/userfiles/files/how-to-get-roblox-credit-for-free_GM431946152.pdf
    • https://hotelartskathmandu.com/userfiles/files/roblox-hacks-and-cheats_GM431946152.pdf
    • https://hotelartskathmandu.com/userfiles/files/static-moonactive-net-link_GM406889139.pdf
    • https://hotelartskathmandu.com/userfiles/files/free-spin-and-coin-links_GM406889139.pdf
    • https://hotelartskathmandu.com/userfiles/files/free-coin-master-spins-2021_GM406889139.pdf
    • https://hotelartskathmandu.com/userfiles/files/juego-hackeado-de-coin-master_GM406889139.pdf
    • https://hotelartskathmandu.com/userfiles/files/free-coin-master-cards-link_GM406889139.pdf
    • https://hotelartskathmandu.com/userfiles/files/coin-master-free-spins-link-today-instagram_GM406889139.pdf
    • https://hotelartskathmandu.com/userfiles/files/roblox-redeem-card-codes-free_GM431946152.pdf
    • https://hotelartskathmandu.com/userfiles/files/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdf
    • https://hotelartskathmandu.com/userfiles/files/free-spins-on-coin-master-link_GM406889139.pdf
    • https://hotelartskathmandu.com/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdf
    • https://hotelartskathmandu.com/userfiles/files/coin-master-free-spin-redeem-code_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e86.bin
ced7a0816f4da89f546ba79ed0aea5046e9db1238611ff195b72f8084cdb2c47		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E86 25036 bytes
font_01_sfnt_off0000883c.bin
a127becf056ed260fd1f7941c69b19033e8fd83f9ea5b170f08310ef50f33d0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x883C 3064 bytes
font_02_sfnt_off000092cb.bin
4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92CB 2816 bytes
font_03_sfnt_off00009cdc.bin
265962787b73e694aac7c67ed987488fc8d8021a4c66c1127c37ccae154b779c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CDC 18484 bytes

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