Malicious PDF — malware analysis report

Static analysis result for SHA-256 a509af3b2f54c330…

MALICIOUS

PDF

45.3 KB Created: 2021-05-12 21:03:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 39d71b51658ffe18fe641d87ff323926 SHA-1: 1de1da7a0fb77a9adb3f9bd140e21a0ef72d9348 SHA-256: a509af3b2f54c3304db3d52c7d216c0a435246f7f5ab48862581c234b4151636
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 0.9551

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://netcdn.xyz/app/406889139/free-coins-coin-master-link-game-hack PDF link annotation
    • https://e-learning-mis-alkarimiyah-keblama.com/__statics/gudangsoal/files/free-robux-legit_GM431946152.pdfIn PDF document text
    • https://e-learning-mis-alkarimiyah-keblama.com/__statics/gudangsoal/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://e-learning-mis-alkarimiyah-keblama.com/__statics/gudangsoal/files/how-to-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning-mis-alkarimiyah-keblama.com/__statics/gudangsoal/files/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://e-learning-mis-alkarimiyah-keblama.com/__statics/gudangsoal/files/free-minecraft-client_GM479516143.pdfIn PDF document text
    • https://e-learning-mis-alkarimiyah-keblama.com/__statics/gudangsoal/files/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • https://e-learning-mis-alkarimiyah-keblama.com/__statics/gudangsoal/files/coin-master-free-online-game_GM406889139.pdfIn PDF document text
    • https://e-learning-mis-alkarimiyah-keblama.com/__statics/gudangsoal/files/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • https://e-learning-mis-alkarimiyah-keblama.com/__statics/gudangsoal/files/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
    • https://e-learning-mis-alkarimiyah-keblama.com/__statics/gudangsoal/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://e-learning-mis-alkarimiyah-keblama.com/__statics/gudangsoal/files/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://e-learning-mis-alkarimiyah-keblama.com/__statics/gudangsoal/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://e-learning-mis-alkarimiyah-keblama.com/__statics/gudangsoal/files/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • https://e-learning-mis-alkarimiyah-keblama.com/__statics/gudangsoal/files/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • https://e-learning-mis-alkarimiyah-keblama.com/__statics/gudangsoal/files/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • https://e-learning-mis-alkarimiyah-keblama.com/__statics/gudangsoal/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://e-learning-mis-alkarimiyah-keblama.com/__statics/gudangsoal/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning-mis-alkarimiyah-keblama.com/__statics/gudangsoal/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://e-learning-mis-alkarimiyah-keblama.com/__statics/gudangsoal/files/give-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning-mis-alkarimiyah-keblama.com/__statics/gudangsoal/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d1e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D1E 25300 bytes
SHA-256: 223f9b9f4c5aff40943efe081279441268c95a9c10f870dd638040d84ed5c44b
font_01_sfnt_off000085c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C5 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008faf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAF 17880 bytes
SHA-256: 1662a5b383d9ad60b7b9cee618f90cf0031b74e1c8940e2d562def689eb52552

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