Malicious PDF — malware analysis report

Static analysis result for SHA-256 3610a54c9528858d…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 11:20:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 68208cbbea7cd7e4d79d2dd05a8f2f6f SHA-1: fb172c72f0541f9bfa9da610e02d03bddcf1b4d8 SHA-256: 3610a54c9528858dd0a194fdd409313b5b7c84a4c395c2f3a14bdf1753bfcbc1
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/431946152/blacksburg-bloxburg-roblox-free-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/zeus-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/best-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/2021-robux-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-tiktok-likes-without-verification_GM835599320.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-codes-for-roblox-mm2_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-for-nothing_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-on-roblox-in-3-simple-steps_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/como-tener-robux-infinitos-sin-hacks_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-roblox-boxing-simulator-2_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/pokemon-go-free-12k-eggs_GM1094591345.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-blue-jacket-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hack-roblox-with-this-edit-cookie_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-supreme-shirts-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hacking-roblox-with-brutus_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-robux-without-doing-anything-2021_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
font_00_sfnt_off0000314f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x314F 22264 bytes
SHA-256: b5ed2e42a50ac7d0bb09ad15de3de8fdf2146c70f29b9138086e1451132ee330
font_01_sfnt_off00006305.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6305 18772 bytes
SHA-256: 1c93cfa230cec1d36c00d38f0df26f658665429e40484a851da6449987794c2a

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