Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdcca029b5fece88…

MALICIOUS

PDF

42.1 KB Created: 2021-05-10 18:56:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 5f479c760c007b085b1d4733d06aebd3 SHA-1: ef10aa448992dfae108f88fa7f9726a6a29f3065 SHA-256: fdcca029b5fece8825d7adfb9a20c64b6fc221052c166dede43ef546229c081f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link disguised as a game hack generator, which is a common lure for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/how-many-levels-are-there-in-coin-master-game-hack PDF link annotation
    • https://www.donjastubica.hr/files/_GM479516143.pdfIn PDF document text
    • http://www.donjastubica.hr/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.donjastubica.hr/files/free-robux-wheel_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-robux-working_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.donjastubica.hr/files/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://www.donjastubica.hr/files/free-spins-coin-master-april-2021_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/new-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-spin-and-win-coin-master_GM406889139.pdfIn PDF document text
    • http://www.donjastubica.hr/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • http://www.donjastubica.hr/files/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://www.donjastubica.hr/files/irobux-com-redeem_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/coin-master-free-spin-and-coins-links-2021_GM406889139.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
stream_003_off00004b4b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B4B 24072 bytes
SHA-256: cac1b28f27b4ac407c8e2b5a16d88fe5678f55c93741762cff6a0ac85b2b3bcb
font_01_sfnt_off0000827e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x827E 18244 bytes
SHA-256: 7a3e09ddd81ff0bf88cf020c99e068e580145ca5d489a9015f3b374a3ae3c451

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