Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ac92ac95e651091…

MALICIOUS

PDF

43.7 KB Created: 2021-05-12 18:32:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 5f3ad948bd224a9c40ca7f97f4661691 SHA-1: 56b8d1ff9ada06b32482143a79cc679209bacf3f SHA-256: 5ac92ac95e651091ec609ece87f5865ddcf7c8892a56ba754ec7d933f730b7c3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to websites offering game hacks and generators, a common lure for phishing or malware distribution. The heuristic firings confirm the presence of external URIs and a game hack redirect lure, strongly suggesting a malicious intent to direct users to potentially harmful sites. Although no scripts were explicitly extracted, the PDF structure and embedded links indicate a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/roblox-rules-game-hack PDF link annotation
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/coin-master-hack-tuts_GM406889139.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-robux-working_GM431946152.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/how-to-get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/coin-master-free-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/coin-master-game-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-coins_GM406889139.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-minecraft-svg-cutting-files_GM479516143.pdfIn 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
stream_003_off00004aa6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AA6 27584 bytes
SHA-256: bbe2d9d660032f7387b91773f79ad6a1c165879f81ab102e09ec68bd973d7a10
font_01_sfnt_off000089b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89B7 17924 bytes
SHA-256: f162e737085b1f1ed51f82e9ad2b4c8c461b0666f4fcd46865d599c97541ad9d

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