Malicious PDF — malware analysis report

Static analysis result for SHA-256 64bb2e92fa77a373…

MALICIOUS

PDF

46.6 KB Created: 2021-06-04 03:53:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a607c9388b75f898bff675edeab4ace9 SHA-1: 88b862974f809dd15ffe2110911c4b27854e837e SHA-256: 64bb2e92fa77a373a14496841043712d1dd4bc05a1ed516908a68bc77e930bf2
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, forming a link farm, and a primary external URI pointing to a potential game hack. The document body, though heavily obfuscated, contains references to game-related terms and URLs, suggesting a lure for users seeking free in-game items or cheats. The presence of a link farm and a direct link to a suspicious URL indicates an attempt to redirect users to malicious content, likely for further exploitation or malware delivery.

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.online/app/479516143/is-minecraft-free-game-hack
    • http://pustakasma.nurulfikri.sch.id/repository/how-get-pubg-uc-free_GM1330123889.pdf
    • http://pustakasma.nurulfikri.sch.id/repository/how-to-get-20210-robux-for-free_GM431946152.pdf
    • http://pustakasma.nurulfikri.sch.id/repository/daily-free-spins-on-coin-master_GM406889139.pdf
    • http://pustakasma.nurulfikri.sch.id/repository/robux-generator-no-human-verification-2021_GM431946152.pdf
    • http://pustakasma.nurulfikri.sch.id/repository/free-spins-and-coins-blogspot-coin-master_GM406889139.pdf
    • http://pustakasma.nurulfikri.sch.id/repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdf
    • http://pustakasma.nurulfikri.sch.id/repository/google-roblox-games_GM431946152.pdf
    • http://pustakasma.nurulfikri.sch.id/repository/coin-master-village-3_GM406889139.pdf
    • http://pustakasma.nurulfikri.sch.id/repository/free-robux-website_GM431946152.pdf
    • http://pustakasma.nurulfikri.sch.id/repository/coin-master-free-link-facebook_GM406889139.pdf
    • http://pustakasma.nurulfikri.sch.id/repository/free-robux-now_GM431946152.pdf
    • http://pustakasma.nurulfikri.sch.id/repository/coin-master-free-gold-cards-link_GM406889139.pdf
    • http://pustakasma.nurulfikri.sch.id/repository/roblox-images_GM431946152.pdf
    • http://pustakasma.nurulfikri.sch.id/repository/coin-master-hack-online-generator-without-human-verification_GM406889139.pdf
    • http://pustakasma.nurulfikri.sch.id/repository/coin-master-2021-free-spins-link_GM406889139.pdf
    • http://pustakasma.nurulfikri.sch.id/repository/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdf
    • http://pustakasma.nurulfikri.sch.id/repository/microsoft-robux_GM431946152.pdf
    • http://pustakasma.nurulfikri.sch.id/repository/free-minecraft-capes-no-mods_GM479516143.pdf
    • http://pustakasma.nurulfikri.sch.id/repository/coin-master-unlimited-spin-hack-mod-apk_GM406889139.pdf
    • http://pustakasma.nurulfikri.sch.id/repository/coin-master-hack-2021_GM406889139.pdf
    • http://www.freenom.comHey
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005311.bin
f4cdc6c7332116a5a19b943c66dd4b75dda90a9d8a49ff33c72b3e0b754e4ab6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5311 25488 bytes
font_01_sfnt_off00008bd8.bin
30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD8 2840 bytes
font_02_sfnt_off0000958b.bin
44c16732000c578f47393ad484896351af84166fbd5efffd5af9fb6697599acb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x958B 17568 bytes

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