Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f21a8ab666c51ea…

MALICIOUS

PDF

47.6 KB Created: 2021-05-15 23:05:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 676b68e7af77463dcfaa5342810b3854 SHA-1: 1a792f8627ed94ac9373dfff884869623ee6ea85 SHA-256: 0f21a8ab666c51eab60e724d1cea86d26620b9f01352232e60befab77271275f
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 0.9013

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/431946152/free-robux-generator-2021-game-hack PDF link annotation
    • http://poonhilltreks.com/userfiles/files/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://poonhilltreks.com/userfiles/files/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://poonhilltreks.com/userfiles/files/cone-master_GM406889139.pdfIn PDF document text
    • http://poonhilltreks.com/userfiles/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://poonhilltreks.com/userfiles/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://poonhilltreks.com/userfiles/files/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://poonhilltreks.com/userfiles/files/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • http://poonhilltreks.com/userfiles/files/coin-master-free-spins-2-5-2021_GM406889139.pdfIn PDF document text
    • http://poonhilltreks.com/userfiles/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://poonhilltreks.com/userfiles/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://poonhilltreks.com/userfiles/files/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • http://poonhilltreks.com/userfiles/files/hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://poonhilltreks.com/userfiles/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://poonhilltreks.com/userfiles/files/robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://poonhilltreks.com/userfiles/files/mangocheats-com-hack-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://poonhilltreks.com/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://poonhilltreks.com/userfiles/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://poonhilltreks.com/userfiles/files/coin-master-34-4-free-download_GM406889139.pdfIn PDF document text
    • http://poonhilltreks.com/userfiles/files/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://poonhilltreks.com/userfiles/files/coin-master-official-fan-page_GM406889139.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_off00004b18.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B18 27664 bytes
SHA-256: 15b890acff65c859709d50814387ddf2319957bc93011bd1cea7e27cf490a89b
font_01_sfnt_off00008c51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C51 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off0000963b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x963B 18748 bytes
SHA-256: fca1806ffff7593a0a2d811b077fe14576afb362c0c2e8ffc695fbf8edc3964d

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