Malicious PDF — malware analysis report

Static analysis result for SHA-256 f321aa69ed283a6c…

MALICIOUS

PDF

41.5 KB Created: 2021-06-03 11:09:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 0e9b30e8374ab4dd17cc3df11706286c SHA-1: 43350f9c296376c75533588e24f37104645a5283 SHA-256: f321aa69ed283a6c34f13c16653127c1e3bbf4c3cb948e355414c6c2646fb1d1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that are flagged as malicious redirectors, specifically promoting "free generators" and "game hacks" for popular games. The primary malicious URL identified is https://netcdn.online/app/431946152/roblox-gang-rape-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 3

  • 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.
  • 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 https://netcdn.online/app/431946152/roblox-gang-rape-game-hack In PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-free-pants_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/freerubux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/earn-robux-now_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-do-i-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-download-wurst_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux-xyz_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/avatar-de-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004d7b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D7B 30984 bytes
SHA-256: 6a7bf9a92aca0ef05f78e265d477da345c0c3db3d785e92921140eb7c199edf6

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