Malicious PDF — malware analysis report

Static analysis result for SHA-256 708fac2062b53fdf…

MALICIOUS

PDF

35.2 KB Created: 2021-07-09 10:37:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: a617d5ed3eb01b3f7ee8771892a570dc SHA-1: 30e825d401f1fa8d5d59ef0d81649b5a420522b4 SHA-256: 708fac2062b53fdfbce30711a251e634e35567500e179f6891502e9cbeeca200
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising 'game hacks' and 'free currency' for popular games like Roblox. The document body and embedded URLs strongly suggest a lure to trick users into visiting malicious sites, likely for credential harvesting or further malware delivery. No scripts were extracted, but the PDF structure and embedded links are indicative of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/how-to-robux-game-hack In PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/how-to-make-a-group-for-free-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/free-infinity-guantlent-roblox_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/free-roblox-accounts-2021-with-robux-generator_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/wurst-client-download_GM479516143.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/how-to-speed-hack-in-dungeon-quest-roblox_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/minecraft-esp_GM479516143.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/how-can-you-get-robux-free_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/free-roblox-synapse-x_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/can-you-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/how-to-make-a-t-shirt-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/roblox-immortal-hack-blood-of-iron_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/minecraft-net-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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31CC 22964 bytes
SHA-256: 50170fd706e49a5818c1f26123221c4532bc5197773bc884ee60d4e76033a0d4
font_01_sfnt_off00006593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6593 18716 bytes
SHA-256: 81085473f4b1e3c22888fbcbdc36b36c4cbedeb7fb75c0ceb2fc7ec450597488

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