Malicious PDF — malware analysis report

Static analysis result for SHA-256 d86d0584579738a4…

MALICIOUS

PDF

35.2 KB Created: 2021-06-29 03:42:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: efb0ba1309a80fd937efd237c65ca7ce SHA-1: 0ba3259fb4a8c93bc50cd8ee960e9e169b38b975 SHA-256: d86d0584579738a4b027844ee986b1bd5b5c6b31f83eb75d178780f48fe6b40f
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links disguised as 'free game hacks' and 'generators', which is a common lure for phishing or malware distribution. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract traffic. The primary URL, http://netcdn.co/app/431946152/change-your-birthday-to-this-date-for-free-robux-game-hack, is likely the final destination for users tricked by the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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.co/app/431946152/change-your-birthday-to-this-date-for-free-robux-game-hack PDF link annotation
    • https://www.cinemapalace.ro/trailer/files/app-to-hack-roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/hacks-injector-roblox_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-robux-quiz_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/app-master_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/best-free-roblox-items-2021_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/roblox-executor-2021-free_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-get-a-free-t-shirt-in-roblox_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_off00002f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F8C 22568 bytes
SHA-256: e4b67a44483d6a5c9000e62604ad59aa03e79c383dbc035d62724a2942a62f8c
font_01_sfnt_off0000624a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624A 19788 bytes
SHA-256: 32334ed13a8f9ea7997d2e6210521125d5c2208e61fcb6b285c17446a1876bf9

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