Malicious PDF — malware analysis report

Static analysis result for SHA-256 1547fa05f0832920…

MALICIOUS

PDF

45.4 KB Created: 2021-04-27 16:09:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 05eb115d9ba5d21695ad502053e46c80 SHA-1: ef8f8f9e7d67ddebd4b6a96c69a15b71849b5ff5 SHA-256: 1547fa05f08329209da5826e24567a67688d637137f207566b0cc616cec24d0a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a lure related to game hacks, specifically for Roblox. The primary link, https://netcdn.xyz/app/431946152/comment-avoir-cheat-roblox-lumber-tycoon-2-game-hack, is flagged as a redirector for game hacks. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9814

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 https://netcdn.xyz/app/431946152/comment-avoir-cheat-roblox-lumber-tycoon-2-game-hack PDF link annotation
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/how-to-hack-roblox-to-get-free-items.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/keneco-kitten-says-roblox-hack.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/casual-shirt-girls-roblox-template-free.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/cicada-wings-roblox-free.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/how-to-hack-god-simulator-roblox.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/real-free-robux-codes.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/how-to-change-your-roblox-name-free.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/rbxcity-roblox-free-robux.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/shadow-raid-loot-cheats-roblox-notoriety.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/batu-free-robux.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000042fe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x42FE 30160 bytes
SHA-256: 28eb8a6b9f398afea93c6a34196f500c17d9b4c07adb942ee4314d36aa43767e
font_01_sfnt_off0000833c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x833C 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off00008cec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEC 19220 bytes
SHA-256: ca1e05bcd9b2b18c7e11ee8ca76a1b9e3e7f49ffee1cfbd8bafe06cd6f8848b6