Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4de92fce4d49262…

MALICIOUS

PDF

33.3 KB Created: 2021-06-27 20:14:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ef9ec5a0c5f0d31973d1cf7ab2452b1a SHA-1: 627ef9cd604aa9e13fb4dfb2bf7dbe1ebd857c69 SHA-256: f4de92fce4d49262e64ef15380811d7f2719ca814255dd720ff67af0d9bb0701
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a "doc body" that explicitly advertises "free redeem code Robux" and "game hack" content. The heuristic "PDF_SEO_LINK_FARM" indicates a large number of external links, suggesting a link farm designed to attract users searching for game cheats. While no scripts were explicitly extracted, the nature of the content and the presence of external links strongly suggest a phishing or malware distribution attempt, likely involving the download of further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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 http://netcdn.co/app/431946152/free-redeem-code-robux-game-hack
    • https://morishita-tc.com.tw/image/data/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdf
    • https://morishita-tc.com.tw/image/data/files/free-spins-on-coin-master-hack_GM406889139.pdf
    • https://morishita-tc.com.tw/image/data/files/free-spins-coin-master-no-verification_GM406889139.pdf
    • https://morishita-tc.com.tw/image/data/files/how-to-load-cheat-scripts-in-roblox_GM431946152.pdf
    • https://morishita-tc.com.tw/image/data/files/how-to-hack-roblox-jailbreak-2021-money_GM431946152.pdf
    • https://morishita-tc.com.tw/image/data/files/how-to-get-coin-master-card-free_GM406889139.pdf
    • https://morishita-tc.com.tw/image/data/files/free-minecraft-printables_GM479516143.pdf
    • https://morishita-tc.com.tw/image/data/files/free-car-glitch-in-roblox-vehicle-sim_GM431946152.pdf
    • https://morishita-tc.com.tw/image/data/files/get-free-coins-for-coin-master_GM406889139.pdf
    • https://morishita-tc.com.tw/image/data/files/coin-master-daily-free-spins-link-today-blogspot_GM406889139.pdf
    • https://morishita-tc.com.tw/image/data/files/roblox-hack-apk_GM431946152.pdf
    • https://morishita-tc.com.tw/image/data/files/how-to-cheat-in-roblox-tycoons_GM431946152.pdf
    • https://morishita-tc.com.tw/image/data/files/free-roblox-invitation_GM431946152.pdf
    • https://morishita-tc.com.tw/image/data/files/free-robux-instantly_GM431946152.pdf
    • https://morishita-tc.com.tw/image/data/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdf
    • https://morishita-tc.com.tw/image/data/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdf
    • https://morishita-tc.com.tw/image/data/files/how-to-get-free-robux-2021-easy-no-human-verification_GM431946152.pdf
    • https://morishita-tc.com.tw/image/data/files/how-to-get-roebucks_GM431946152.pdf
    • https://morishita-tc.com.tw/image/data/files/how-to-hack-coin-master-root_GM406889139.pdf
    • https://morishita-tc.com.tw/image/data/files/minecraft-dungeons-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_001_off00002b51.bin
2ec6f1a27369430d277a74a260440e457f8c54a64202db19cee23aaa74500961		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2B51 22448 bytes
font_01_sfnt_off00005d59.bin
cd73a9e07245fbe882d92d4ab7e7893fa390617ee7c227c8a14f258746885c23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D59 19152 bytes

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