Malicious PDF — malware analysis report

Static analysis result for SHA-256 38167e7975f25e3b…

MALICIOUS

PDF

35.3 KB Created: 2021-06-21 18:28:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6804f9ac739ed3321aca0de4c0bf4489 SHA-1: 24f86bc0009a2dbdef10d5783ef98f4b525a87e4 SHA-256: 38167e7975f25e3bd030d6724d827049bbfcb07fbddeb3ed24628a9ea784cc45
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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.co/app/431946152/how-to-hack-and-get-free-robux-2021-game-hack PDF link annotation
    • https://reggieslockandkey.com/images/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-redeem-cod-free_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-game-free-download-for-windows-10_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/pokemon-go-free-gyarados_GM1094591345.pdfIn PDF document text
    • https://reggieslockandkey.com/images/if-roblox-made-everything-free_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-toy-codes-roblox_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-get-free-cars-in-vehicle-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/hack-system-for-roblox_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/robux-glitch-hack_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-get-robux-no-hack-or-anything-free-209_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-free-login_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/roblox-counter-blox-aim-hack_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/roblox-how-to-use-cheat-engineon-lumber-tycoon-2_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/hack-tiktok-fans-free_GM835599320.pdfIn PDF document text
    • https://www.roblox.com/my/tasksIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000302b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x302B 22560 bytes
SHA-256: d11afa33233dd370bad6d4adee33bb1e21bcd5540704eef77360fb9db08e9d5d
font_01_sfnt_off00006293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6293 19728 bytes
SHA-256: de1324c8586aeb242915481e07a9b375268081c1b1db52579e3b77ab487ae547

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