Malicious PDF — malware analysis report

Static analysis result for SHA-256 9340e617b7a9347b…

MALICIOUS

PDF

42.3 KB Created: 2021-04-23 10:13:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 10856068228d4f5ee345207c01f0f0de SHA-1: 51ee71b84a7a2a19788479f1b86cd504a07d9698 SHA-256: 9340e617b7a9347b389a82bc41dc717404b4cdb9b7f05e7f628fc2fe6875c73d
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 0.9836

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://netsecure.top/app/431946152/r17-roblox-hack-game-hack PDF link annotation
    • https://lib-stie.yai.ac.id/repository/how-to-hack-admin-commands-on-roblox-no-injector.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/best-hack-script-pack-for-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/injecthack-com-roblox-hack.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-free-tshit-download.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-vh2-gun-hack.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-generator-not-fake.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-hacked-game-database.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-items-in-roblox-for-free.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/is-there-a-free-trial-for-roblox-bc.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/password-generator-roblox-hack.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003fb8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3FB8 24780 bytes
SHA-256: 2bca7d6caa400a2de2fe31fa53c340130ce17871d696ba3c1dd56f3266004a8e
font_01_sfnt_off0000790a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x790A 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off000082ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82BA 18344 bytes
SHA-256: 58ebd6718287328817861ac26009ddb891bc7516c2e8ef37354d8c7cc38276cf

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