Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e9327245b212158…

MALICIOUS

PDF

46.9 KB Created: 2021-06-03 22:09:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 0ace88f41693ebf8477de3b0f489b3f6 SHA-1: d7bf4834f9bcae26db87e6e3898030838013a020 SHA-256: 2e9327245b2121585c5d2db5e1ce0f80223e5f2dda080271ad51f1458d37ae84
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering "game hacks" and "free spins", a common lure for phishing or malware distribution. The primary malicious link identified is https://netcdn.online/app/406889139/coin-master-free-spins-link-today-hack-game-hack, which is flagged as a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/coin-master-free-spins-link-today-hack-game-hack In PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-hack-coin-master-with-root_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-free-download_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-deals_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/real-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005176.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5176 23852 bytes
SHA-256: 5ef14053099cf1ee93239c5e253643bca868a99ffbae3304a0ace73a092ac28d
font_01_sfnt_off000087b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B7 3560 bytes
SHA-256: 9d03f7c6c62ba3e7fdc0441e9d982a863b2b60b781165d6920512f68ecc4a440
font_02_sfnt_off0000943d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x943D 18412 bytes
SHA-256: 78e241cf2016df2e6ebc2ce00be22676d65e6ec45cce47e077571dd8c0cc4425

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