Malicious PDF — malware analysis report

Static analysis result for SHA-256 687a131bdd6166fb…

MALICIOUS

PDF

35.4 KB Created: 2021-07-08 20:27:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 3c562930952f53d336f705bb99cbf5b9 SHA-1: d1fe894c62466de68d78ac90c38ddbf8c8ead4dd SHA-256: 687a131bdd6166fb97cd2645b21158fbdc58b816afbb50a62681f626d98d00a8
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-apk-hack-35-8-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/spend-free-robux-cheat-engine_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/no-human-verification-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hack-denisdaily-roblox-account_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/unban-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-hack-scropts_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-hack-quick-and-easy_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-roblox-and-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/criminal-vs-swat-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-mobile-24-info-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/colossus-legends-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-food_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/como-recuperar-mi-cuenta-de-roblox-hackeada_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/real-coin-master-hacks_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
stream_002_off00003192.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3192 23264 bytes
SHA-256: 266692ec4bc58296c7b2b7ded2662d3082427ba148ab2f23948ca7c690c90343
font_01_sfnt_off00006634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6634 18696 bytes
SHA-256: 37466016b432fe2c4302c226887fb4a123f095adabdcdeca05fa6b35b2ac340f

Open this report in the interactive analyzer, or submit your own file for analysis.