Malicious PDF — malware analysis report

Static analysis result for SHA-256 7815c938dedd3684…

MALICIOUS

PDF

34.0 KB Created: 2021-06-26 07:07:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a4b8bf35d7f2b772ffc8dbd5dff76cf5 SHA-1: b7930bbb6bfe60c3b75c94a4c683156bfcb4d47c SHA-256: 7815c938dedd3684e46e733b14b45b52a94833d03b850767dbcc5bfebcbbdae3
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a 'link farm' structure, strongly suggesting it is designed to redirect users to external sites. The document body and extracted URLs indicate a lure related to game hacks and cheats, likely leading to malware downloads or phishing. No scripts were extracted, but the PDF structure and URL patterns are indicative of a malicious distribution method.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • 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-jailbreak-editor-hack-game-hack
    • http://www.homesweethome.pl/images/free-robux-generator-com-roblox-hack_GM431946152.pdf
    • http://www.homesweethome.pl/images/9-legit-ways-to-get-free-robux_GM431946152.pdf
    • http://www.homesweethome.pl/images/roblox-dab-t-shirts-free_GM431946152.pdf
    • http://www.homesweethome.pl/images/promo-code-list-to-get-free-robux_GM431946152.pdf
    • http://www.homesweethome.pl/images/master-free-spin-and-coin-link_GM406889139.pdf
    • http://www.homesweethome.pl/images/mathep_GM431946152.pdf
    • http://www.homesweethome.pl/images/roblox-how-to-get-robux-for-free-2021_GM431946152.pdf
    • http://www.homesweethome.pl/images/free-minecraft-server-hosting-24-7_GM479516143.pdf
    • http://www.homesweethome.pl/images/free-roblox-website_GM431946152.pdf
    • http://www.homesweethome.pl/images/free-outfits-roblox_GM431946152.pdf
    • http://www.homesweethome.pl/images/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdf
    • http://www.homesweethome.pl/images/roblox-free-robux-codes_GM431946152.pdf
    • http://www.homesweethome.pl/images/www-rbxhut-com_GM431946152.pdf
    • http://www.homesweethome.pl/images/how-to-get-free-minecraft-coins_GM479516143.pdf
    • http://www.homesweethome.pl/images/roblox-piano-hack_GM431946152.pdf
    • http://www.homesweethome.pl/images/minecraft-hacks_GM479516143.pdf
    • http://www.homesweethome.pl/images/como-hackear-el-juego-coin-master_GM406889139.pdf
    • http://www.homesweethome.pl/images/http-coin-master-hack-club_GM406889139.pdf
    • http://www.homesweethome.pl/images/how-do-you-be-a-hacker-in-roblox_GM431946152.pdf
    • http://www.homesweethome.pl/images/how-to-get-free-robux-wikihow_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d64.bin
573b5d79acb701a4bf2de4ed372d634e63260ef3f2027f8d364c8f7c5d7e44a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x2D64 22368 bytes
font_01_sfnt_off00005f2a.bin
593ec80e3e937e04f5507c8ea04b9721605d43273148c9a057c5a6daedb06688
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2A 19220 bytes