Malicious PDF — malware analysis report

Static analysis result for SHA-256 34911c7962c2869d…

MALICIOUS

PDF

46.7 KB Created: 2021-06-03 13:53:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d3c1d86127fa28f9cc50303f4e5bc443 SHA-1: 8008149fb66ee1608e4909f0bd3006baf17a62a4 SHA-256: 34911c7962c2869d013e23c1e14be940d829ac4628a917f231fd821f9b8eddf9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to a malicious website, identified as a 'robux generator game hack'. The ML classifier strongly flagged this PDF as malicious. The presence of embedded URLs and the lure of free in-game currency suggest a phishing or scam attempt, likely intended to lead users to a site that may host further malware or attempt credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/robux-generator-game-hack In PDF document text
    • http://library.fisip.upnvj.ac.id/repository/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/como-descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/hack-coin-master-for-iphone_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/roblox-redeem-card-codes-free_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-hack-mod_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/minecraft-bedrock-edition-pc-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004e91.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E91 25460 bytes
SHA-256: d7b8838180d125f0846e89a6429349692d862242c25f11d7991218d3d9f397fb
font_01_sfnt_off00008a0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A0E 2820 bytes
SHA-256: 984d79cc00e4aaa21be427f23b56147105e8f12e1ad5c504d904a5b27c613147
font_02_sfnt_off000093a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93A7 18184 bytes
SHA-256: 6ad13131c8a801fdee9b2b1f688ac66371065e9680419547ef4f25df18f73033

Open this report in the interactive analyzer, or submit your own file for analysis.