Malicious PDF — malware analysis report

Static analysis result for SHA-256 df54d508da5bca0f…

MALICIOUS

PDF

33.1 KB Created: 2021-07-04 08:31:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 761068093d292011c90b09b2b4ab6958 SHA-1: 139d21ade374d5c42b8188c5037ed5b2ea11701b SHA-256: df54d508da5bca0fc9bf3c7c323d998f1aedcb71ed84cc1ca56cc20ca7d76e53
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/479516143/free-minecraft-worlds-game-hack PDF link annotation
    • http://www.vetmed.fkh.unair.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/como-hackear-dragon-ball-rage-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/free-posed-golden-freddy-roblox_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/free-coin-master-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/robux-cheats-2021_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/cheat-roblox-2021_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/pokemon-go-free-40k_GM1094591345.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/get-free-lambo-in-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/free-gear-codes-for-roblox_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/get-robux-today_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/grow-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/pokemon-go-free-revives_GM1094591345.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_off00002d93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D93 22132 bytes
SHA-256: 2e2872c93c4f4de7030b7d81edb655694199826b739e1e04696e564ac84a50ac
font_01_sfnt_off00005e26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E26 18444 bytes
SHA-256: 519667d1aa810d84b7a27f78c0d78b43e6811ec53d484a883000f86181ec748c

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