Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc8275cd403b10ba…

MALICIOUS

PDF

35.0 KB Created: 2021-06-27 23:48:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 613848c4151da4ce95810754d5b7a4ad SHA-1: bf69e2931674cc1c863dbe950b93ed11afd18769 SHA-256: cc8275cd403b10ba42855a6d4ae47bba7717df77c965b4e3f19b8f264d4bb12d
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into clicking on them by promising game hacks and currency. The primary link redirects to a known malicious domain, indicating a phishing or scam attempt. The document body and embedded links suggest a focus on exploiting interest in popular online games like Roblox. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/robux-hack-online-game-hack In PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-free-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-hack-robux-2021-pc_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-account-stealing-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-noclip-in-roblox-mac-without-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-hack-easy-and-fast-website_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-denisdaily-shirt-free_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-how-to-get-robux-with-cheat-engine-63_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-hack-pizza-place-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-today-2021_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/hackear-y-tener-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-get-1-million-robux-free_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/buzz-youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-get-free-cape-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-wings-in-roblox-catalog_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-no-human-verification-no-survey-ios_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/money-cheat-jailbreak-roblox_GM431946152.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
font_00_sfnt_off000030e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E6 22764 bytes
SHA-256: 67c6f58ec7d15a036c061635b9a16eaea61fa57a8db4608a55c4aea54fa7a4e3
font_01_sfnt_off00006409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6409 18916 bytes
SHA-256: cea9f5bb68f5ea015c8fe0c733dcb1aaadd45745694d4f5eebbdca748872e56d

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