Malicious PDF — malware analysis report

Static analysis result for SHA-256 c14e13cf730d912d…

MALICIOUS

PDF

35.7 KB Created: 2021-06-19 05:44:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: c003334f34d5d438ae20941604810c93 SHA-1: e40cc2150011e20714b41e4f085f19d0cb3aec3c SHA-256: c14e13cf730d912d8681d86705159a60f7a26c29018cd61650606519036843ce
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure for game hacks and free currency, directing users to a malicious redirector. The document contains multiple embedded URLs that likely lead to further malicious content or downloads. The ML classifier strongly indicated maliciousness, and the heuristics confirm the use of a known malicious redirector infrastructure.

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/free-copy-hack-roblox-game-hack In PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/vehicle-simulator-roblox-money-glitch-hack_GM431946152.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/how-to-hack-billionaire-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/hack-to-protect-village-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/hacking-roblox-thumbnail_GM431946152.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/coin-master-free-daily-spins-today_GM406889139.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/v3rmillion-roblox-account-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003449.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3449 22492 bytes
SHA-256: be8e595218154cf10f45c34276acc63cee753544f06b90f59a3b2aebb10cecc7
font_01_sfnt_off00006620.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6620 19176 bytes
SHA-256: b61517f981f317f9950cffdcd2d08b09e44f298a7471decf42687c3990ea6c37

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