Malicious PDF — malware analysis report

Static analysis result for SHA-256 967c1c4604c56f08…

MALICIOUS

PDF

34.9 KB Created: 2021-06-20 06:39:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 4f6e63ba12118fae0f4095f0dc078453 SHA-1: a7b4af89f462af8e1e6c5ede217bb74f05f72126 SHA-256: 967c1c4604c56f084041d0c04a6d70c79cacc88df212d866194807b3b4c69239
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game hacks and generators to trick users into clicking malicious links. The document contains multiple embedded URLs, including one pointing to known malicious redirector infrastructure, which likely serves as the initial stage for delivering a secondary payload. The ML classifier also strongly indicated maliciousness.

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/how-to-change-roblox-name-for-free-2021-game-hack In PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/coin-master-free-pin_GM406889139.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/free-download-roblox-apk_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/how-to-get-free-robux-instantly-2021_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/minecraft-aimbot_GM479516143.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/free-faces-on-roblox-names_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/minecraft-xbox-360-free-download-code_GM479516143.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/fly-hack-roblox-script-2021_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://www.khneisser.ch/uploaded_files/userfiles/files/wahoo-gaming-co-free-robux_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_off00002fe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE9 22352 bytes
SHA-256: b3a85156a0eb2dd4edfbc4a0e785d89329fcb760db301fcb336ad9e3322746b2
font_01_sfnt_off000061d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D4 19644 bytes
SHA-256: 990f2363eea3c0a2d5cfc323ff906c4810d14797ecc4d67f649d1caed3a2d80c

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