Malicious PDF — malware analysis report

Static analysis result for SHA-256 feb5243414f8358f…

MALICIOUS

PDF

44.5 KB Created: 2021-06-03 09:46:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6a15ba6aab57cba6d4e0e4ee9fee9a7e SHA-1: 209728e4fcc3e6ad1ef30671e256773443a7076f SHA-256: feb5243414f8358f45bd12d28f1355515d5de1518881100a3b9ed771c0e8a2b5
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 0.9865

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.online/app/431946152/roblox-old-avatar-game-hack PDF link annotation
    • https://www.sarsen.net/uploads/files/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/collect-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/coin-master-tricks_GM406889139.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/link-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/coin-master-60-spins_GM406889139.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/roblox-rape_GM431946152.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • https://www.sarsen.net/uploads/files/files/minecraft-packs-free_GM479516143.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005124.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5124 25016 bytes
SHA-256: 9f8ce8ceed8e1f169afe3679393c1b5fc93d71077e46829c33142c4da2d817ce
font_01_sfnt_off00008a8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8B 18404 bytes
SHA-256: 3ee04b9976b2778629c251408a788a05adb62cbea0810dca153e44138bd3c832

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