Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cd56f944cf5001b…

MALICIOUS

PDF

33.7 KB Created: 2021-07-06 19:34:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d785a8a1b33b4be585b1763fc5833841 SHA-1: ab1b12fb3a1149880b9a0c2d6864abfae178d342 SHA-256: 7cd56f944cf5001b8b7d9bb952073064dc227626192e875fdcea333158a5ba00
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/coin-master-free-in-app-purchases-game-hack PDF link annotation
    • http://library.umla.ac.id/repository/free-roblox-catalog-items-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coinmaster-spin-ml_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/hack-to-find-youtubers-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-spin-ml-link_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-spin-whatsapp-group_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
font_00_sfnt_off00002de9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DE9 22588 bytes
SHA-256: 45da47ef683f02758b237746503384204ed42f8fcdb283934d22e7fbd87830a0
font_01_sfnt_off0000604c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604C 18632 bytes
SHA-256: f451a315d961ddee3e83590372a5093eca857148ee7d458f53a0857a7336fdd4

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