Malicious PDF — malware analysis report

Static analysis result for SHA-256 d53b87ebc6f17371…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 12:32:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 1c23e497a32e7524188a8babfbed722f SHA-1: ab88bc2688d8654cb3a15fc2b23e2ca113978491 SHA-256: d53b87ebc6f173718e0f192753a6d1c59f7e2b8e8e10bbd16bbc657e72606a4e
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-connection-lost-game-hack PDF link annotation
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/4-elements-tycoon-roblox-how-do-get-free-wrath-hammer_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-spins-coin-master-2021-app_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/lots-of-robux_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-admin-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/working-cheat-engine-bybass-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/very-very-easy-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-free-tshirt-2021_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/hack-robux-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/how-to-go-into-somenes-roblox-account-hack_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/robux-today-hack_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_off00003192.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3192 23264 bytes
SHA-256: e9b130d53b12e76a5ebeb6908cf626f1d018a25a94077812c0c595573c3748df
font_01_sfnt_off00006606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6606 17836 bytes
SHA-256: a76b435a66663bc960d26f3f6b43f7089cbbf554bd18db08d117cbb299e70e3d

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