Malicious PDF — malware analysis report

Static analysis result for SHA-256 d396b7f026105a26…

MALICIOUS

PDF

34.6 KB Created: 2021-06-30 06:07:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d242f2309e9e4bccf4c894725dc312ce SHA-1: b4b6d122117bf050af29d5330daa343b9b66f388 SHA-256: d396b7f026105a264d9571d83ff381fb49f890efb4498035bf934efbc3cb62d1
102 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are related to 'free Robux' or game hacks, suggesting a lure for users to download malicious content. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and the ML classifier strongly flagged this PDF as malicious. The document body and extracted URLs point towards a phishing or scam attempt to trick users into visiting malicious sites.

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/free-robux-jesse-tc-game-hack
    • http://library.apsidoarjo.ac.id//repository/how-to-hack-someones-roblox-account_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/www-roblox-com-games-for-free_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/roblox-cheats-for-tickets-and-robux_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/roblox-hacks-commands_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/roblox-cheat-engine-download-no-survey_GM431946152.pdf
    • http://library.apsidoarjo.ac.id//repository/get-free-robux-2021_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spin-app-2021_GM406889139.pdf
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spin-and-coins-links_GM406889139.pdf
    • http://library.apsidoarjo.ac.id/repository/pourquoi-quand-jessaie-de-hacker-des-robux-a-marche-jamais_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/how-to-speed-hack-roblox-mac_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/make-robux_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/how-to-speed-hack-in-roblox-simple-steps_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/roblox-is-bieg-hacked_GM431946152.pdf
    • http://library.apsidoarjo.ac.id//repository/como-hackear-coin-master-espaol_GM406889139.pdf
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdf
    • http://library.apsidoarjo.ac.id/repository/roblox-bee-swarm-simulator-free-eggs_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/coin-master-hack-activegamer_GM406889139.pdf
    • http://library.apsidoarjo.ac.id//repository/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdf
    • http://library.apsidoarjo.ac.id/repository/descargar-roblox-hack-robux-infinito_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/roblox-hack-lumber-tycoon-2script-inserter_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000318e.bin
94d07f544d938b70353881ffbb0f09fa0a542f4e2a88d36f8568f10e2dbbd68d
pdf-font-stream PDF embedded font (sfnt) at offset 0x318E 22116 bytes
font_01_sfnt_off000062aa.bin
63b72a556bbe72c028800f8e47037c265aafbab25e4c11fe21d58dc8bc0c9521
pdf-font-stream PDF embedded font (sfnt) at offset 0x62AA 18880 bytes