Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9fb145c202a72c9…

MALICIOUS

PDF

34.2 KB Created: 2021-06-20 03:30:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: b285e62944e8527aa4ebb01c062d1281 SHA-1: c7d6434c07c03a90f7d6e48da71e34d24a560766 SHA-256: e9fb145c202a72c995a7856b7a998722701bc75d75d61aaec8dfc0dfe3192b8a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector at http://netcdn.co/app/431946152/free-robux-codes-2021-game-hack, which is presented as a lure for free game currency or hacks. The document body and heuristics indicate a deceptive attempt to redirect users to potentially harmful content. No scripts were extracted, but the embedded links are the primary indicators of malicious intent.

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/free-robux-codes-2021-game-hack In PDF document text
    • http://goldwing-shop.ru/images/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • http://goldwing-shop.ru/images/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
    • http://goldwing-shop.ru/images/minecraft-free_GM479516143.pdfIn PDF document text
    • http://goldwing-shop.ru/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://goldwing-shop.ru/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/kick-gui-hack-roblox_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/best-roblox-hacking-software_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/roblox-free-models-virus_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • http://goldwing-shop.ru/images/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/get-free-robux-by-completing-offers_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/roblox-hack-original_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/how-to-get-free-robux-on-ipad-no-password_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/strucid-aimbot_GM431946152.pdfIn PDF document text
    • http://goldwing-shop.ru/images/mc-hacks_GM479516143.pdfIn PDF document text
    • http://goldwing-shop.ru/images/new-roblox-exploit-hack-proxo_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_off00002d58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D58 22676 bytes
SHA-256: 74b30d53cf5bf4d12e4c7bf50dc9e4007fb12ac4c8ddffa8aad702f74c5f2624
font_01_sfnt_off00005fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE2 19292 bytes
SHA-256: a06e109f4742255b3e3bb25118cfd4c6c94882922bdfaa475a115917b157a644