Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff6ae50402d0bf8f…

MALICIOUS

PDF

35.1 KB Created: 2021-07-01 07:04:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 995c5196a6e914417d19dc2d327e0437 SHA-1: a4b83530615425c37ca4ab4cf939a4155fdaa2f2 SHA-256: ff6ae50402d0bf8f5b24eb71ec7accaed2820c40f36eddfe4b848dd6d5922bbc
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.co/app/431946152/free-know-it-all-face-roblox-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/roblox-hack-2021-download-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-items-in-roblox-games_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/youtube-roblox-broken-bones-cheat_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-free-pants_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/www-roblox-cheat-us_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/robux-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/bear-mask-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/synapse-download-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-hack-roblox-games-no-downloads_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-no-prank_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-hack-into-others-peoples-acoount-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-giveaway_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_off00003362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3362 22284 bytes
SHA-256: 7f923f3855307e1f993187b821a6e5b1a8ba76a9a0d073755aa10d1dc9883210
font_01_sfnt_off00006472.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6472 18920 bytes
SHA-256: 5c91bee9c1761a5759151fcb2352b21d149a85372f5c816d93f7b1815ba1116e

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