Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e7386d0577f05c5…

MALICIOUS

PDF

34.7 KB Created: 2021-07-08 16:18:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 3f49413a950572f7fce37d2bf87b0cc3 SHA-1: d9fd480cde403cf0bba26eeac52c3d02bdfe35f3 SHA-256: 8e7386d0577f05c5d32314cd72e6d529d18568ad8849591a0dd13d5f8c2a07c3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and other PDFs, masquerading as game hacks and free currency generators. The primary lure is to trick users into clicking these links, which likely leads to further malicious content or downloads. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a phishing or malware distribution attempt.

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.tw/app/406889139/20210-free-spin-links-for-coin-master-game-hack In PDF document text
    • http://astdubai.co/userfiles/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/hack-para-roblox-2021-noviembre_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/robux-now_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-hacks-for-android_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/roblox-xbox-360-free-download_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/get-free-spins-on-coin-master-links_GM406889139.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_off00003000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3000 22924 bytes
SHA-256: c9cc3ffa16dd53eb52b180fcbf90696988bdaa1d5104ef4d733f90122924b567
font_01_sfnt_off00006394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6394 18748 bytes
SHA-256: 708165ba4c05304492c47ae2756e3ec5ad0c28727daaad1010e0ae42cc87a0d4

Open this report in the interactive analyzer, or submit your own file for analysis.