Malicious PDF — malware analysis report

Static analysis result for SHA-256 8722a9b9dac9696e…

MALICIOUS

PDF

42.4 KB Created: 2021-05-13 18:34:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: ac0c4110b60515d0ce5662e0cfa7f4af SHA-1: c8a6fc6ac3c5237a93002692e96ee2e1404a056b SHA-256: 8722a9b9dac9696ee47e5f93520553ae5a5c5498e872d2d12a0c1db4aca605c0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'free generator / game hack' lures. The primary URL identified is https://netcdn.xyz/app/406889139/how-to-get-free-spins-and-coins-in-coin-master-game-hack. While no scripts were extracted, the document's structure and embedded URLs strongly indicate a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/how-to-get-free-spins-and-coins-in-coin-master-game-hack In PDF document text
    • http://digilib.unbari.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/robux-for-surveys_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/is-coin-master-free_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/lucky-patcher-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-hair-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/how-do-you-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/robux-websites-2021_GM431946152.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
stream_003_off00004984.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4984 25076 bytes
SHA-256: cabc8fed4f45959768a23f33330d99a2b33639f4b3b488c88b63cf7509866b3a
font_01_sfnt_off000083c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C2 18224 bytes
SHA-256: 1a177d96c25f70e29c96d18ff08cc0e48255fbbd4539b1ca90a782c549603dc1

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