Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0a91e45d2c5bab1…

MALICIOUS

PDF

41.7 KB Created: 2021-05-16 17:17:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: afe0b28847c362fd375d4c4d01c9b2c2 SHA-1: c8339e9b8e9dd7a5f7bfd7db6fcae0a500b47b87 SHA-256: e0a91e45d2c5bab170450fbf5ada917124104e079dd0f30fc7dd77329e762510
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generators' and 'game hacks'. The ML classifier strongly flagged this PDF as malicious. The embedded URLs suggest a phishing or scam attempt to lure users to potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/free-coin-and-spin-link-game-hack In PDF document text
    • http://mbbs.hr/files/coin-master-free-link-facebook_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/get-robux-com_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/robux-free-c_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-tricks_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/free-robux-picture_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_003_off000047e6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47E6 25496 bytes
SHA-256: 23b5ddc9ccfaa14149ca128890135677bb467042b082e40057234f9435099e1d
font_01_sfnt_off000081e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81E3 17896 bytes
SHA-256: d4766dae7958252991ea9c600ec63f9574658937c72f1ba15e00730ea5da47af

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