Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eeaf03428dc1959…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 18:17:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2a5e2230f0788ff1cb538f224a3e6cc7 SHA-1: 2b2eb5bb6b7d901c5a4d7df9348f8e4b40bbfdfa SHA-256: 4eeaf03428dc19593c31754ea19462dbeef20aa12626036d08d96e083b5cb48a
102 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on domains associated with SEO link farms. The document body and extracted URLs suggest a lure for users seeking game hacks and free in-game items, indicating a phishing or malware distribution attempt. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.tw/app/406889139/coin-master-free-spins-hack-game-hack
    • http://perpus.i2s-learning.com/repository/instagram-free-coin-master-spins_GM406889139.pdf
    • http://perpus.i2s-learning.com//repository/freerobuxhack-us-2021_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/coin-master-free-spin-link-today-2021_GM406889139.pdf
    • http://perpus.i2s-learning.com/repository/free-spins-and-coins-com_GM406889139.pdf
    • http://perpus.i2s-learning.com/repository/free-minecraft-texture-packs-java_GM479516143.pdf
    • http://perpus.i2s-learning.com/repository/google-moon-active_GM406889139.pdf
    • http://perpus.i2s-learning.com/repository/how-to-make-a-private-server-on-roblox-for-free_GM431946152.pdf
    • http://perpus.i2s-learning.com//repository/free-roblox-accessories_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/roblox-jailbreak-hack-paint_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/pastebin-roblox-promocode-hack_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/robux-hack-no-verification-or-human-check_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/roblox-ninja-legends-cheat-engine_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/minecraft-for-free-on-phone_GM479516143.pdf
    • http://perpus.i2s-learning.com/repository/coin-master-free-spins-hack-2021_GM406889139.pdf
    • http://perpus.i2s-learning.com/repository/114-4-hacks_GM479516143.pdf
    • http://perpus.i2s-learning.com/repository/why-does-it-say-roblox-hacks-are-virus_GM431946152.pdf
    • http://perpus.i2s-learning.com//repository/stock-speed-coin-master-free-spins_GM406889139.pdf
    • http://perpus.i2s-learning.com//repository/is-minecraft-free-on-mac_GM479516143.pdf
    • http://perpus.i2s-learning.com//repository/free-cracked-minecraft-server-hosting_GM479516143.pdf
    • http://perpus.i2s-learning.com/repository/how-do-you-hack-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002ef1.bin
537845c184532c070617f354a1e74c791231a56c32eadc2a46ed6f90b5e7e399
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EF1 23264 bytes
font_01_sfnt_off0000637a.bin
bda74eba5f039297e511dddd57f660cdccd001576784cab1ba2dc4ebdf08fb85
pdf-font-stream PDF embedded font (sfnt) at offset 0x637A 18344 bytes