Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5abb516ed005db5…

MALICIOUS

PDF

45.9 KB Created: 2021-06-07 14:45:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b7c1047b2d5c9ee66728e815c7849d73 SHA-1: e9b3e80eab23b01123473aa7e5e96b37e96ab326 SHA-256: f5abb516ed005db50477c0dccbcb4c34d3f362d5fe7ac8700def45af38dbef50
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external resources, many of which are structured as SEO-optimized PDF link farms. The primary URL, https://netcdn.tw/app/431946152/hack-vehicle-simulator-roblox-upate-10-12-17-game-hack, suggests a lure for game-related exploits. The ML classifier strongly flagged this PDF as malicious, and the presence of a 'download button' heuristic further supports a malicious intent to trick users into downloading potentially harmful files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 https://netcdn.tw/app/431946152/hack-vehicle-simulator-roblox-upate-10-12-17-game-hack PDF link annotation
    • http://ipdrs.org/images/2nd-best-hacker-on-roblox_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/how-to-make-a-minecraft-client_GM479516143.pdfIn PDF document text
    • http://ipdrs.org/images/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-hack-download-apk_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/hhack-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/freerobux-co_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/best-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-gift-link-hack_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
stream_004_off00005274.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5274 26312 bytes
SHA-256: 73f8b8391f213ada77f62a3546fb6c1516720deb606b5eba04108a78ca6400f4
font_01_sfnt_off00008bf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF9 19928 bytes
SHA-256: 8669f94c27594b437821d0944678fdf22f705ea981f906c358c3746b91a5ca06

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