Malicious PDF — malware analysis report

Static analysis result for SHA-256 304f8d1c63970683…

MALICIOUS

PDF

40.5 KB Created: 2021-05-11 00:00:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4360febeb57470c5bca13a536bf08e1b SHA-1: a32ff2949fed856019ab2eec7d2b5b4036816e83 SHA-256: 304f8d1c63970683edb92a85f34f7302684d532040711bb0d83928ddf65401d9
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 0.9971

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 https://netcdn.xyz/app/406889139/coin-free-spin-game-hack PDF link annotation
    • http://lib.teknik.unimal.ac.id/repository/robux-win_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-hack-no-verification-ios_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coins-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/roblox-com-www_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/minecraft-survival-free_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/install-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-hack-generator_GM406889139.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_off00004689.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4689 24480 bytes
SHA-256: 49be3f98705acf25076f260357d0d5fe27198e353b7027265e60f2b04db1ba24
font_01_sfnt_off00007e57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E57 17552 bytes
SHA-256: 8dab29753a5a72b3c6b7a99730aed283de919e10e0bbccf431f5836ef96af8e0

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