Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ceeb014d6dae41e…

MALICIOUS

PDF

36.0 KB Created: 2021-07-05 23:13:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 09c18f500af935930f2063d715200f51 SHA-1: 29cd6c40ff45f991ec0dbce71a3e7c56ce2c7318 SHA-256: 8ceeb014d6dae41e1d74102450b5156e5fb1367982055873bbec7264b4783e75
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, 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 5

  • 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.
  • 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/http-blackgamesus-coinmasterhack-game-hack PDF link annotation
    • https://fridaytravelnepal.com/userfiles/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-site_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-real-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/get-robux-now-for-free_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-install-free_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/20210-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-free-without-sign-in-also-free-robux-no-downloading_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/i-need-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/are-any-boys-free-in-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-games-that-actually-work-2021_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
stream_002_off000034de.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34DE 22960 bytes
SHA-256: 86b3862336043c90889994d72ea909195534176cc5700136d16215cde78c91b6
font_01_sfnt_off0000685b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x685B 19036 bytes
SHA-256: e0c93fbcfcf5807f239682f8f22ea8ea78a927bd0218216fc53f61277e1b47fb

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