Malicious PDF — malware analysis report

Static analysis result for SHA-256 75aad857abe852a8…

MALICIOUS

PDF

31.5 KB Created: 2021-06-25 22:29:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 7674f2811ace8b091b6fa831adec7799 SHA-1: 63bb19d8d11838ff0e6337078d4bfaacf2e14689 SHA-256: 75aad857abe852a80e70d33394c51718c56bda9eb680baf9aa6a920928d62eaa
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF document contains numerous links to external websites, many of which are hosted on domains associated with game hacks and free in-game currency. The primary lure appears to be related to 'Roblox' and 'Coin Master' exploits. The document body and heuristics indicate a link farm designed to redirect users to potentially malicious or scam-related content, rather than providing legitimate information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • 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.
  • 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.co/app/431946152/free-roblox-account-getter-v3rmillion-game-hack PDF link annotation
    • https://www.advancissurgical.com/uploads/files/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/robux-hack-tools_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-master_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-gruops_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-unlimited-spin-hack-mod-apk_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-hack-roblox-2021-xbox-one_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/earn-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3094 23056 bytes
SHA-256: 86dd06bec7d45c1da4e5e347eff597955b2d42231acc25adb7d46ffeafd8949f