Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcb1f013fb749ea3…

MALICIOUS

PDF

34.9 KB Created: 2021-06-21 10:34:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 55f367584f996be7085be415c08687aa SHA-1: 40ec8eacb14d45aea1a44028e3fcb8544dc18349 SHA-256: dcb1f013fb749ea3b9c63ab5c7cc0f68647761905e3975d706d9f22532923598
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as "game hacks" or "free currency" generators. The primary lure is a link to 'how-to-hack-roblox-account-on-chromebook-game-hack', which is hosted on infrastructure flagged as malicious. The document body and embedded URLs reinforce this theme, aiming to trick users into clicking through to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-roblox-account-on-chromebook-game-hack In PDF document text
    • http://caraless.com/images/free-robux-accounts-bugmenot-2021_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/free-robux-glitch-xbox_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/blox-best-robux_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/is-coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • http://caraless.com/images/free-robux-cheat-2021_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/roblox-the-scary-elevator-red-key-locations-cheat-sheet_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/can-you-use-cheat-engine-on-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/coin-master-pc-hack_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://caraless.com/images/win-free-robux_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/hacks-for-roblox-royal-high_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • http://caraless.com/images/blox-fun-info_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1C 22884 bytes
SHA-256: 0a74c6df2c82cc0f41c4042d607372000f786a3d869cc525d9b5844c7b63b4d1
font_01_sfnt_off00006217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6217 19488 bytes
SHA-256: 942f2f584bd8de4caaa43834d24f7f09bd39176e4ad6be218f4f0cd3cc6fcea5

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