Malicious PDF — malware analysis report

Static analysis result for SHA-256 58debcd252c36803…

MALICIOUS

PDF

34.8 KB Created: 2021-06-30 03:44:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 83e9113d0b793eb5e8691c5c1e4ef1df SHA-1: c582679bf05d27cb4fd1f7a5896b9faf0fb40ef9 SHA-256: 58debcd252c36803c47e4a1af740a8248e82e4111cad6bd996b3a91a9f086909
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to lure users into clicking on 'game hack' or 'free robux' generators. One primary link redirects to http://netcdn.co/app/431946152/best-script-for-hacking-roblox-game-hack, which is identified as a malicious redirector. The document body and heuristics indicate a social engineering tactic to drive traffic to potentially malicious sites or download further payloads. No scripts were extracted, but the PDF structure itself facilitates the malicious 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/best-script-for-hacking-roblox-game-hack In PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-your-hacked-account-back-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/lumber-tycoon-2-hacked-roblox_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-hack-coin-master-with-root_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/minecraft-windows-10-code-free_GM479516143.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-free-spin-best-link_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/hacker-coin-master_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/paypal-roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-clothes-with-codes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/best-apocalypse-hack-roblox_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-make-a-game-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-free-robux-on-roblox-without-verification_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
stream_002_off0000309f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x309F 22364 bytes
SHA-256: 0ee57a15d942597634c989f9362e0d1132cfd903f3a41ad6e8731b6f771958da
font_01_sfnt_off0000626d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626D 19220 bytes
SHA-256: 4e452279019fd0026401971a65e5771c9b4c51bdbbc7856376d2110312b31647

Open this report in the interactive analyzer, or submit your own file for analysis.