Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7fc38461aa756db…

MALICIOUS

PDF

34.2 KB Created: 2021-07-03 19:31:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ce60f63753be652819e6c0512f490ef5 SHA-1: 631c402b63e7603c262dd797d11191cbd44cfedf SHA-256: b7fc38461aa756dbc0910708805cca44b06a21b1fb7f180d8b8fe34305f7cad0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://netcdn.tw/app/406889139/how-to-get-free-coins-on-coin-master-hack-game-hack PDF link annotation
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-hack-free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-robux-without-bc-or-hacking_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/wwwroblox-hacks-freetk_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-shionbi-life-max-lvl-hack-robloxdaily_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-codes-august-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-roblox-with-cheat-engine-65_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-robux-hack-free-no-download_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/fire-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-roblox-account-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-100-working_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_002_off00002fff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FFF 22636 bytes
SHA-256: 9174c38902c9ae5466056bb32c6b87b10a0fd2d39cae73f21ef678d9b836d621
font_01_sfnt_off000062c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C9 18332 bytes
SHA-256: 5b878530e69a12175dbf01b0ca128da18827fe0c1663de911774679428d069c4

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