Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e49dc665de2202a…

MALICIOUS

PDF

34.6 KB Created: 2021-06-28 15:44:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a18062c8c9c8c78cf99d08ae4d27ee68 SHA-1: 29a93982145a1e57dc218df5acf211705d171cad SHA-256: 4e49dc665de2202aee4ec10cafd5ae0180fcf887e2e1189d80df5ed2ec9d209e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators' for popular games. The document body and heuristics indicate a lure to download potentially unwanted or malicious software. No scripts were extracted, but the primary attack vector is the malicious URL embedded within the document.

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/roblox-free-rare-hat-game-hack In PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/how-to-download-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/roblox-download-mac-os-x-free_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/coin-master-32-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/tiktok-free-hearts-hack_GM835599320.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/roblox-hack-today_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/free-roblox-account-with-robux-and-password_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/how-can-roblox-account-get-hacked_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/roblox-aot-tshirt-free_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/welcome-to-farmtown-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/hack-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/zero-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/rhow-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.nationalmilklaboratories.co.uk/uploads/files/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off0000323c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x323C 22068 bytes
SHA-256: fb49a550b60c7400fb15e8c7c9c2c4d227e012f82701a2985591ac99b3842de3
font_01_sfnt_off0000630b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630B 18752 bytes
SHA-256: 7df721e4e5b79170887db122e8adbfa972f741b4cecc92d7ddd727fd390d7759

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