Malicious PDF — malware analysis report

Static analysis result for SHA-256 93bdeb2a91dbdd5a…

MALICIOUS

PDF

34.5 KB Created: 2021-06-26 20:46:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: fce871fcf40a3dc06725e90710394459 SHA-1: 77f66b0c6433ee728c1524dee128b70925e68d8b SHA-256: 93bdeb2a91dbdd5a50c97dcaf85396b36e924b3133ac29638870439067dc2e02
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into downloading potentially malicious files by promising game hacks and free in-game currency. The primary link directs to a known malicious redirector infrastructure, indicating a phishing or scam attempt. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a social engineering attack.

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.co/app/431946152/download-hacked-games-roblox-game-hack In PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/free-robux-group_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/completed-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/ssuper-speed-hack-in-roblox-2021-i-any-game_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/make-free-robux_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/united-gaming-net-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/free-admin-in-any-roblox-game_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/free-roblox-accounts-that-work_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_off00002e4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E4D 22784 bytes
SHA-256: 37aff999a8cb5aa114308c11316968fc218ba7cd75a7325b13a08b18421daa28
font_01_sfnt_off000060a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A2 19424 bytes
SHA-256: a2a2526e7c0bf5c98ab74efbb1db78c8418b72a8d5ec72b47b507eed938d6f81

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