Malicious PDF — malware analysis report

Static analysis result for SHA-256 0736926202808b9e…

MALICIOUS

PDF

45.9 KB Created: 2021-06-11 12:11:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f2fca61a33d157ddc79f8b38224bb6c9 SHA-1: 30c011f5de501c841fdb453dfb746e1949c951f3 SHA-256: 0736926202808b9e3cf0442ee45a310a53a2f1bd19633cc4d83d71db04a894f8
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 are SEO-optimized and point to files hosted on a repository domain. The document body and extracted URLs suggest a lure for users seeking game-related cheats or currency, likely leading to malware or unwanted software downloads. The ML classifier strongly indicates malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/roblox-how-to-get-free-clothes-2021-game-hack
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-free-staffs_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-earn-robux-for-free-2021_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/wurst-115_GM479516143.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/free-minecraft-texture-packs_GM479516143.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-get-800-robux-for-free_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-free-spins-blogspot_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/free-modded-minecraft-server-hosting_GM479516143.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/free-spins-coin-master-2021-hack_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/new-roblox-hack-free-followers_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-free-spins-twitter_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/free-robux-2021-no-verification_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/how-do-u-get-free-robux-2021_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/free-gold-cards-in-coin-master_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-get-free-robux-without-doing-surveys_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/redeem-roblox-card-free_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-dominus-prae-pfp-free-to-use_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-get-free-items-by-inserting-roblox_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/free-robux-obby_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/real-coin-master-hack_GM406889139.pdf
    • https://www.roblox.com
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052d7.bin
9af52b64672b90b352dbbb8c136a30f8d8769b9c6c5beb3a3463a6b9addedaf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52D7 25952 bytes
font_01_sfnt_off00008f54.bin
b724e7fceb4cf2a5909ad66e3ae3fb5cfb1506f9dcfb309604abd0fdb1e7dc55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F54 18784 bytes

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