Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c75999192dedb74…

MALICIOUS

PDF

32.9 KB Created: 2021-06-27 04:06:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 6450b8e54e9cd34e4418268300b3a1d1 SHA-1: ded6901176308e383c85d5a849238bff2cc6375f SHA-256: 1c75999192dedb74b5113f725deb707661c893a975174e46d91f35baca3234b3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

This PDF document contains multiple links to external websites that are flagged as malicious redirectors, specifically promoting "free generator / game hack" lures. The document body explicitly mentions "Roblox" and "free robux", indicating a social engineering tactic to entice users to click on these links. The presence of numerous embedded URLs and the critical heuristic firings strongly suggest a malicious intent to redirect users to potentially harmful content or download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • 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.
  • 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/dowload-roblox-for-pc-free-game-hack In PDF document text
    • http://lib.untad.ac.id//repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-free-robux-2021-no-hack-easy_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/flamegg-hack-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-anti-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/addrobux-us-roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/rbx-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/synapse-roblox-free-no-virus_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-free-gear-on-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-game-hacking-tricks_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/scripts-for-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-minecraft-skins-pc_GM479516143.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_off000029eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29EB 22236 bytes
SHA-256: ba3907596e66fa8cf3cf6f89edc77cda5e588e6c24ee36ce757a17f7865b30b1
font_01_sfnt_off00005af0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF0 19312 bytes
SHA-256: 3ce2811fbb4cf45da53ee95e8a503c89accfc337c52ac4a1350db002f65e7959

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