Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c204aa07b7f6663…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 23:45:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 5321ebf3d64c20951df5769aa33c857c SHA-1: 91326d986faa45d9f61d7585f6cf2c29f3832356 SHA-256: 6c204aa07b7f666355e9c9eb99e118a4d8376fc644d160e3b6343f7f5683c90e
142 Risk Score

Malware Insights

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

This PDF document contains a large number of links, identified as a 'link farm', designed to lure users with promises of game hacks and free items. The primary URL, http://netcdn.tw/app/479516143/how-to-hack-a-minecraft-server-game-hack, is a strong indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it is designed to exploit user interest in gaming cheats to redirect them to potentially harmful sites.

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.tw/app/479516143/how-to-hack-a-minecraft-server-game-hack PDF link annotation
    • http://digilib-pps.unja.ac.id/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-gun-hack_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/hack-scripts-for-roblox-trackid-sp006_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-obby-no-password-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-free-spins-link-deutsch-ios_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/best-free-injector-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-high-school-cheat-codes_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/get-roblox-hacks-mac_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-trapball_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/robux-rewards_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-hacks-2021-level-7_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000310a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x310A 22812 bytes
SHA-256: 6169104dbdb4efc4d27dbda4d5cf5dc108b85776faaf4984041a0fca49db051b
font_01_sfnt_off0000640c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640C 18448 bytes
SHA-256: f1c94bc02981aac760cf80effac2d7fab2917855e343fbf4fd70c93d36576a9e

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