Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f9efacbabf62158…

MALICIOUS

PDF

34.2 KB Created: 2021-06-29 20:14:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2427648f7e0b5123a0ebe5771e8c7c14 SHA-1: d749ac64395be21c85e6c3171b5cee1a29554300 SHA-256: 5f9efacbabf621580b05c502983745f4df5826e872864e6acc7a6f9f4703ae27
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free currency to trick users into clicking malicious links. The document contains numerous links to redirectors and SEO-optimized PDF link farms, indicating a phishing or scam campaign. The primary malicious URL identified is http://netcdn.co/app/431946152/cheat-code-roblox-money-game-hack, which is associated with known malicious redirector infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/cheat-code-roblox-money-game-hack In PDF document text
    • http://lib.untad.ac.id/repository/7aykw-duncan-free-robux-no-survey-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/cm-daily-spins_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-anti-speed-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-buy-promo-items-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-phantom-forces-free-robux-bot_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-to-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-to-hack-coin-master-game-ios_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-hack-tool-v1-9-apk_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/unlimited-robux-hack-no-download_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-batu-kol-faki_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-email-rewards-link_GM406889139.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_off00002cbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CBF 22768 bytes
SHA-256: 54c0fb18749477daca300bdcd7a25328e65f3cc28d8b4364d28d4cfce66b0693
font_01_sfnt_off00005f95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F95 19308 bytes
SHA-256: 8d6200a38085b6eed2225538ddd71f2303c094e2e8f64cc54607ae4afec3fb80

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