Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad92a62bd85e7dde…

MALICIOUS

PDF

47.2 KB Created: 2021-06-03 07:50:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 91522dc2f3bcd577f345df3e1110b85e SHA-1: bd06ecde6461eb0b7f6240a83ad84d73111e8c0c SHA-256: ad92a62bd85e7dde54867190e7641a72998b1c68f1f89ca3cd3abd60f5df3d98
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites offering game hacks and generators, a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious, increasing confidence in its malicious intent. Although no scripts were explicitly extracted, the presence of external links and the lure suggest the document is designed to lead the user to a malicious website, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/479516143/minecraft-packs-free-game-hack PDF link annotation
    • http://library.fisip.upnvj.ac.id/repository/free-gold-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/robux-withdraw_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/pubg-600-uc-price-in-pakistan_GM1330123889.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/hack-coin-master-32-mod-apk_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-spins-coin-master-links-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-today_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/tiktok-free-vpn_GM835599320.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000552c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x552C 25228 bytes
SHA-256: 9eb2f79cf1534e84e92564751af2d884ab24bbcc7721a09b37d479200b85ac44
font_01_sfnt_off00008d9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D9B 2820 bytes
SHA-256: 34dd21cbcbbf8680f9624d5ddfa25e49232e6768200f74ddacb5347fd7a5f6dc
font_02_sfnt_off0000973c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x973C 17892 bytes
SHA-256: 28bf341ddf3e4fc6c44bfb74e5ae7c03e5884bb4772c75cdbdc503afd42c19ec

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