Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6c5703c688e588a…

MALICIOUS

PDF

43.8 KB Created: 2021-06-03 11:16:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: b0c4c29898b74654fd588e17ebfcf152 SHA-1: 0db55626a87e36a27267cd3145a7a3b78944cfa1 SHA-256: e6c5703c688e588a10a0da29dfd0191c7a63d426f9d21b4199e3d227e4c60f55
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or free generators. The primary lure is a link to 'free spins and coins for coin master game', which is a common tactic to entice users into clicking malicious URLs. The document's structure and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/406889139/free-spins-and-coins-for-coin-master-game-game-hack In PDF document text
    • http://digilib.uim.ac.id/repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-game-hack-online_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/pokemon-go-free-8-bit-sprites_GM1094591345.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-monster_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-free-in-app-purchases_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/roblox-rewards-robux_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-golden-cards-hack_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_off00005046.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5046 25012 bytes
SHA-256: 5f5250a3f0ef75878f047b6b4fb166cd2827fd94d7ce2a0c0c9c7549449ccf0e
font_01_sfnt_off000088a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88A1 18320 bytes
SHA-256: d1cf6b486e789d6a7a281824944966070be141b92be060b449a52bae7023ebff

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