Malicious PDF — malware analysis report

Static analysis result for SHA-256 87c1203758c5c2aa…

MALICIOUS

PDF

42.2 KB Created: 2021-05-14 12:06:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 32a48aada62b1ddd21fda21fde2bbb75 SHA-1: ff2e8574f7c89464b4b1682f07b850a9f51a6507 SHA-256: 87c1203758c5c2aa6a7c6c1df6ad5042bff1ec7b26a91be3dc96d0af0b2fbc92
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game items and hacks, directing users to a known malicious redirector. The embedded URLs and the document's content strongly suggest a phishing or scam attempt designed to lead users to potentially harmful sites. No scripts were extracted, but the document structure and heuristics indicate a malicious redirector chain.

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/431946152/how-do-you-get-roblox-for-free-game-hack In PDF document text
    • https://mbbs.hr/files/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/free-robux-master_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/free-online-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/unlimited-robux_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/hack-the-coin-master_GM406889139.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_off000047dd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47DD 25592 bytes
SHA-256: 77859c7e4ddfaa7f0e167ec1f03e374973854ace18cc734d3c4479f016cf52a2
font_01_sfnt_off0000813c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x813C 18688 bytes
SHA-256: c319980467b8bcea808cf7446b1cb0422dd1c28f9b99e7a79dce679e259df094

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