Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bad351cc7e0fd31…

MALICIOUS

PDF

34.7 KB Created: 2021-06-19 05:15:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3fb426197c6ae291b8402035e22e45ac SHA-1: 482aeab64bde0e2b11b79175bf09d22328e1a963 SHA-256: 3bad351cc7e0fd31132fbe7c3543f43263642bad981838fe70c75961860c3421
156 Risk Score

Malware Insights

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

This PDF document contains numerous links to websites offering game hacks and cheats, such as 'roblox-lua-admin-script-cheat-engine-game-hack'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm or redirection to malicious sites. The 'SE_CALLBACK_LURE' heuristic also suggests a potential tech-support scam or phishing pretext, although the primary lure appears to be game-related exploits. No scripts were extracted, but the embedded URLs and link farm heuristics strongly indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • External URI info PDF_URI
    PDF contains an external URL action
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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-lua-admin-script-cheat-engine-game-hack PDF link annotation
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/tiktok-free-bot_GM835599320.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/minecraft-esp_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-call-roblox-on-pc-for-free_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-look-cool-on-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/cheat-roblox-bubblegum-simulator_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-often-pubg-uc-appointments_GM1330123889.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-daily-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-robux-fast-and-easy_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_off000030ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30EC 22888 bytes
SHA-256: 59fc3db6121a8c16ddf22517c0e8b68b9088070e0307c35fb89720cebddc9b83
font_01_sfnt_off00006422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6422 19628 bytes
SHA-256: 4b27903b1aa385519b3d0b575a9bf75f7537c35a82cb5e71f70180776078a821

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