Malicious PDF — malware analysis report

Static analysis result for SHA-256 814abb58c1abf383…

MALICIOUS

PDF

35.2 KB Created: 2021-07-06 02:20:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: df253ff48a11ca45facf19cc9e489b3d SHA-1: 30f8e2b1ae24c4d2a01fc166549761dc2b6579b9 SHA-256: 814abb58c1abf383563c866829fa91a7a2ad4c35b91139a24c2f3b5bbab5ddfb
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 heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically flags this behavior. While no scripts were extracted, the presence of these malicious links suggests the document is designed to lead users to potentially harmful content, likely for credential harvesting or further malware delivery.

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.tw/app/431946152/how-to-hack-roblox-games-game-hack PDF link annotation
    • http://library.fikes.upnvj.ac.id/repository/boku-no-roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/hacks-for-treasure-quest-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/counter-blox-roblox-offensive-hacks-download_GM431946152.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/roblox-download_GM431946152.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/pro-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/how-to-hack-into-builders-club-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/www-coinmaster-com_GM406889139.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/hack-roblox-computer_GM431946152.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/roblox-cheat-engine-hacks-2021_GM431946152.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31EF 22468 bytes
SHA-256: 27c1dcd5cb4b329d8d31b6389bdda973e2c493c6db352d3a6d5945b1da713a0a
font_01_sfnt_off00006445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6445 19080 bytes
SHA-256: c7de099e57cfd7f442f0afeba5034f70bb3b049a86a5e548322d77ee9b6e5cee

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