Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2290e0985a813ef…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 02:26:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 360fcc5fea2da8eeafaac1727756a3b0 SHA-1: af7cdb5f90bc698cdf7ca85219fa81ada42505c5 SHA-256: d2290e0985a813ef14a28fa0dfcbac85b24c1196e258af8ebbf80ffdb304f608
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-key-free-spin-game-hack PDF link annotation
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-robux-earnrobux-today_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-a-roblox-account-on-pc_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/assassin-2-hack-roblox-script_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-games-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/robux-free-account_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/cheats-for-dragon-ball-rage-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-roblox-on-computer_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-roblox-accounts-2021-ios_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-cp_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/hack-dragon-ball-z-roblox_GM431946152.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
stream_002_off000031bb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31BB 22620 bytes
SHA-256: 60a80808db1ee37d2edb66445e7481c5f658d7665454fe405ddd4ba0f656fe09
font_01_sfnt_off00006469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6469 18352 bytes
SHA-256: 061150fbdeaed7229e7a1722ec377d93af9e08c005f541ea7c3088ba8c6e6598

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