Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2d37eee9f47c4b0…

MALICIOUS

PDF

43.7 KB Created: 2021-05-13 09:36:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7e101858e05e989cc1dbb352cf0c5575 SHA-1: 0ce9980992e85b937b57f15ddaf5c1eae3a8eee2 SHA-256: f2d37eee9f47c4b06828472fe1106c28c3dbe8c452e985d394425f27e1e7cca3
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, aiming to trick the user into interacting with a malicious link. The embedded URL and numerous other URLs point to sites offering 'free Robux' or game hacks, a common social engineering tactic. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/431946152/how-to-get-free-robux-for-real-game-hack
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/minecraft-pe-free_GM479516143.pdf
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/free-roebucks-no-human-verification_GM431946152.pdf
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/coin-master-spin-link_GM406889139.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/roblox-fun-com-free-robux_GM431946152.pdf
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/spinuri-gratis-coin-master_GM406889139.pdf
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/hack-minecraft_GM479516143.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/coin-master-free-card-link-today_GM406889139.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-game_GM406889139.pdf
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/roblox-robux-hack_GM431946152.pdf
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/roblox-prison-life-hack_GM431946152.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/coin-master-daily-spins_GM406889139.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/robux-free-gift-card-org-hack_GM431946152.pdf
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdf
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/minecraft-pocket-edition-free_GM479516143.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/free-roblox-clothes-girl_GM431946152.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/roblox-how-to-get-free-clothes_GM431946152.pdf
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/bloxawards-com-earn-free-robux_GM431946152.pdf
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-2021_GM406889139.pdf
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/coin-master-free-link-spin_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bea.bin
9e379c2749a99016e928a58f4a2eae351ccb67c518c99d0edcfaa22e9058cd43		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BEA 25552 bytes
font_01_sfnt_off00008782.bin
4c8fb6f4ba3d8fd1a53aecf8e038afdea7cc6760123f6d2281f23f521b1068d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8782 18584 bytes

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