Malicious PDF — malware analysis report

Static analysis result for SHA-256 17e72942d48e31f6…

MALICIOUS

PDF

32.5 KB Created: 2021-07-05 19:00:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: db3308903f0cea1ae66c39bfc23903c4 SHA-1: fb884a40332c833e9c07b3ae63c233d9f0eb150a SHA-256: 17e72942d48e31f6ce8ee2bc17f41d9b00da12551dbc0a396c9abb6a35634b19
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document acts as a lure, presenting itself as a way to obtain game hacks and cheats for popular games like Minecraft and Coin Master. It contains numerous links to external websites, many of which are structured as PDF files themselves, likely serving as a link farm or redirect to malicious content. The primary intent appears to be driving traffic to potentially malicious download sites or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • 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 http://netcdn.tw/app/479516143/minecraft-hack-mod-game-hack PDF link annotation
    • http://razredna-nastava.net/files/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/admin-hack-roblox-download_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/cheating-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/make-free-robux_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-source_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/how-to-gte-free-robux-easy-and-fast-hack_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-roblox-svg_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/roblox-snow-shoveling-simulator-lua-c-hack_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/hackear-prison-life-roblox-2021-pc_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-official-website_GM406889139.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_off00002c70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C70 21732 bytes
SHA-256: 9cece204c7e8612ec5ee7457ac33bfa062af67497ec61e84cba9676e8df247f5
font_01_sfnt_off00005c10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C10 18340 bytes
SHA-256: 49e8d41e4645ecbcf6c8cca7b2812b927382294641a04bb93a79b652b6b1cc7e

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