Malicious PDF — malware analysis report

Static analysis result for SHA-256 693d9db2fe0c55a5…

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 00:38:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bb6e0530a99b64fe7adde3ccaec487cf SHA-1: 17b9b100076559b51578d48a92438ee76fa96605 SHA-256: 693d9db2fe0c55a51a9533815e95528a0d8a457682d9298866e965297c932b0d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/coin-master-daily-free-spins-25-game-hack PDF link annotation
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/robux-and-tix-hack-no-download_GM431946152.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/blackberry-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/https-wwwfree-robuxcom_GM431946152.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/free-cruch-skin-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/roblox-free-bandana_GM431946152.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/free-robux-today_GM431946152.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/xbox-roblox-free-john_GM431946152.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/tiktok-free-invitation_GM835599320.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/roblox-mad-city-sofort-level-100-hack_GM431946152.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/how-to-get-free-t-shirts-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/free-tiktok-comments_GM835599320.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/buy-robux-free_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_off0000317f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x317F 22432 bytes
SHA-256: 9a2daa69a718a0a6680f3d0ae1ad036d93b3f490a6f49df03c70e9a5c97d17ad
font_01_sfnt_off00006356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6356 18852 bytes
SHA-256: a487ce0000d3ce43933202f3692ca7cb45ea3e63696d23cb31952fc5e806c807

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