Malicious PDF — malware analysis report

Static analysis result for SHA-256 b425e72d51a3ecfd…

MALICIOUS

PDF

32.8 KB Created: 2021-07-09 15:57:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 9291ee3c1406c1e3c1f549164ceef454 SHA-1: 2378430f58f12513103ce76d7a0e2e8fad4943f8 SHA-256: b425e72d51a3ecfdc042b037a717fb1975c7d72b05b8a7198765da8c6614d751
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to a known malicious infrastructure. The document body and heuristics indicate a lure for game-related cheats or currency, likely a phishing or scam attempt. The primary attack pattern involves tricking the user into clicking a link that leads to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/easy-robux-game-hack In PDF document text
    • http://www.atlanticexportsltd.com/uploaded_files/userfiles/files/roblox-need-for-speed-cash-hack_GM431946152.pdfIn PDF document text
    • http://www.atlanticexportsltd.com/uploaded_files/userfiles/files/coin-master-how-to-get-free-pet-food_GM406889139.pdfIn PDF document text
    • http://www.atlanticexportsltd.com/uploaded_files/userfiles/files/roblox-project-jojo-free-vip_GM431946152.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/free-clothes-for-roblox-and-no-survey-or-download_GM431946152.pdfIn PDF document text
    • http://www.atlanticexportsltd.com/uploaded_files/userfiles/files/how-to-hack-lucky-blocks-roblox_GM431946152.pdfIn PDF document text
    • http://www.atlanticexportsltd.com/uploaded_files/userfiles/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/how-to-get-free-money-in-bloxburg-roblox_GM431946152.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/get-free-roblox-private-servers_GM431946152.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/roblox-online-free_GM431946152.pdfIn PDF document text
    • http://www.atlanticexportsltd.com/uploaded_files/userfiles/files/free-spin-coin-master-app-download_GM406889139.pdfIn PDF document text
    • http://www.atlanticexportsltd.com/uploaded_files/userfiles/files/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/roblox-gang_GM431946152.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
    • http://atlanticexportsltd.com/uploaded_files/userfiles/files/free-robux-com-roblox_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_off00002b46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B46 21980 bytes
SHA-256: 56b214531f8e6282b193947c46557c63c742118ceba81130545fba433446a9f1
font_01_sfnt_off00005c1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C1B 18732 bytes
SHA-256: 73aa8d0075d35b346c6278ff8105dd2d17954bcce6a7925eca586d45f67dab7a

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