Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fc42d018079e1f3…

MALICIOUS

PDF

45.9 KB Created: 2021-05-11 01:34:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f208907dbbd8bfdb4fc20dd446ecd2dd SHA-1: 82549d778403bb9a6dabf47cbb0d75284caf213f SHA-256: 8fc42d018079e1f38a614b11f00d989470ed95232924d7561355dec61e3687f0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link disguised as a "free generator / game hack" for Roblox, which is a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the embedded URI and the nature of the lure suggest a malicious intent to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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 https://netcdn.xyz/app/431946152/roblox-help-free-robux-game-hack PDF link annotation
    • http://santeh-40.ru/images/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/oginject-co_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/coin-master-heaven-daily-free-spins-and-coins-links_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/juego-hackeado-de-coin-master_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/coin-master-free-spin-link-list_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/free-spins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/free-robux-hack-us_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49D3 25836 bytes
SHA-256: f12481f5ea6f9e630cd4b9b8eb24fb06311d2ced47653a1b6e5ef080c13be84b
font_01_sfnt_off0000845e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x845E 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9106 18264 bytes
SHA-256: 4686decc205f725eac2af31d2bb610515d085fb80a4fbb870416018a21b04127

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