Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4eb4933e3ebbe3f…

MALICIOUS

PDF

34.8 KB Created: 2021-06-18 13:26:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 9d8a960746518deec06afe200501c5e2 SHA-1: b98105e9c3f47febbced3e78ea1f9078d48bddd2 SHA-256: f4eb4933e3ebbe3f262120458479b4596ad2131575418b7997c5d5c916faac7e
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/redeem-roblox-cards-free-codes-2021-game-hack PDF link annotation
    • http://razredna-nastava.net/files/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/cm-free-spins_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-robux-net_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/cheats-for-roblox-how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/hack-coin-master-32-mod-apk_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-32-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/pokemon-go-free-youtube_GM1094591345.pdfIn PDF document text
    • https://razredna-nastava.net/files/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-blogspot_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-free-spins-link-download-ios_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/robux-free-online_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-roblox-wallpapers_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/pubg-uc-details_GM1330123889.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-meep-city-10-000-cheats_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBF 22324 bytes
SHA-256: b49492904488bfddb7b0c6f6d744d6cc4bcf58e8591003e34e0f3e8c5176af44
font_01_sfnt_off0000616b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x616B 19484 bytes
SHA-256: 51a45613865a40948aa3dbc4ac7e155c22b4d6875acd34472cececd7245a9538

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