Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0f3b021654a3197…

MALICIOUS

PDF

33.7 KB Created: 2021-06-29 03:17:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6b334baf2033338c7db4142cb9444c29 SHA-1: 3092fba968a0ebedefa002c110eafe1f4a4139aa SHA-256: d0f3b021654a31971669c01504693ebe30193eaff3774eae1150d86b7d9a7a29
142 Risk Score

Malware Insights

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

This PDF document contains numerous links to external websites, many of which are disguised as game hacks or generators for popular games like Roblox and Coin Master. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a link farm or SEO abuse tactic. The primary link, 'http://netcdn.co/app/431946152/roblox-dragon-ball-af-hacks-game-hack', is flagged as a game hack redirector, likely leading to malicious content. The document's purpose appears to be to drive traffic to these sites, which could host malware, phishing pages, or other malicious content.

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.co/app/431946152/roblox-dragon-ball-af-hacks-game-hack PDF link annotation
    • https://khavarrooy.com/assets/uploads/pages/files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/how-to-get-red-glowing-eyes-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/add-robux_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/lv-7-roblox-hack_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/coin-master-card-link-free_GM406889139.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/robux-free-c_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/free-minecraft-domain_GM479516143.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_off00002e33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E33 22164 bytes
SHA-256: 956f167d6baafcd8da6eec884933f9397dff9188c68bcb4bcb99a8786a519516
font_01_sfnt_off00005f4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4C 18824 bytes
SHA-256: 641e0974fb614a7cdf70854dab72c589a68427baeb9e2ade10564c045349e7da

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