Malicious PDF — malware analysis report

Static analysis result for SHA-256 096915d10ca5d046…

MALICIOUS

PDF

42.1 KB Created: 2021-06-03 13:17:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 77af9252d032c5e8c4b15b0937df57a7 SHA-1: 242a14b52a79b2c64de024db6607a3f8da4b848d SHA-256: 096915d10ca5d046dc23abd33b7170a45a37d5132407da6abf4a18f347c6d8a9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as "free generators" or "game hacks". The primary malicious URL identified is https://netcdn.online/app/835599320/tiktok-free-7-day-game-hack. Although no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering lure designed to lead users to potentially malicious content or further downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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 https://netcdn.online/app/835599320/tiktok-free-7-day-game-hack In PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-xyz-2021_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/do-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-re_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/pubg-uc-100-bonus_GM1330123889.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-progamers_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-daily-free-link_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/300-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004bb2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BB2 23936 bytes
SHA-256: 8112c3230738e1b3940e76ab7e6746678ca34132e8cd850a9acfdeef3667dc97
font_01_sfnt_off0000821c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x821C 18088 bytes
SHA-256: a6ef6f81f0373d27eb2b230c8ee2a11b8d5a685577a9522b2c603c1091ee019c

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