Malicious PDF — malware analysis report

Static analysis result for SHA-256 31d0f56019d0d286…

MALICIOUS

PDF

35.0 KB Created: 2021-06-26 14:48:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7290516eee10d78986e8ae406f7731b3 SHA-1: 48b2f3c5b958a953fdb909953e4469509509bf48 SHA-256: 31d0f56019d0d286e2d9a660b720035a63e5d090e18fe8109d80d21e7e9d94cf
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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.co/app/431946152/how-to-get-free-robux-n-roblox-game-hack PDF link annotation
    • https://repository.stikesindramayu.ac.id/repository/pubg-uc-daraz_GM1330123889.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-bank-tycoon-money-cheats_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/como-tener-1-millon-de-robux-el-hacker-2021-pro_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/robux-javascript-hack_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/games-on-roblox-that-give-you-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-robux-2021-hack_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/legit-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-everything-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-free-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/robux-hack-without-human-verification_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-decal-id-free_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-coins-coin-master-today_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/pastebin-hackear-roblox_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/hack-coin-master-1_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
font_00_sfnt_off00002fa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA7 23076 bytes
SHA-256: 895d693ef9fbf9f709f13f2fb84001f61f16512863bf1ef2aa85b698c8c6a430
font_01_sfnt_off00006382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6382 19056 bytes
SHA-256: 698d91f61ef3dcea383a99c9983fefa0bd940a46c0ffaa50796c0ec6f3580568

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