Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebfa2434e4cfbc01…

MALICIOUS

PDF

34.2 KB Created: 2021-06-30 06:30:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b61601b443732233736569fbe8e7eb13 SHA-1: 18b324197753a25a7bfbc218b6b64243a875dcf1 SHA-256: ebfa2434e4cfbc018b7415533e551210470fdc1e3567b5a4737860c731c34fdd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically http://netcdn.co/app/431946152/tsarsploit-hack-roblox-game-hack, which is presented as a 'free generator / game hack'. This lure is designed to trick users into clicking the link, leading them to potentially malicious websites or further downloads. The ML classifier also strongly indicated maliciousness.

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/tsarsploit-hack-roblox-game-hack In PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/roblox-pet-simulator-hack-script_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/roblox-hacks-to-hack-any-game_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/redline-hack-roblox-mega_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/roblox-free-shirt-for-girl_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/how-to-hack-through-wall-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/is-friending-a-roblox-hacker-bad_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/how-to-be-a-vip-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/free-robux-for-everyone_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/www-hack-roblox-online_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/roblox-area-14-hacking_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/free-robux-promo-codes-2021-not-expired-november_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9blitar.online/__statics/gudangsoal/files/roblox-robux-gift-card-free_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_off00003180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3180 21512 bytes
SHA-256: 696e44066cad3db24101991fff270ebfff74a8f26b9ab36eaa5eecfa793a0c70
font_01_sfnt_off0000609b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x609B 19056 bytes
SHA-256: 9df1df6c7fb70ead812b147fd207da83711d23c18e5b0e5ff75df0feb2c95347