Malicious PDF — malware analysis report

Static analysis result for SHA-256 f063f703dbbc5886…

MALICIOUS

PDF

44.9 KB Created: 2021-05-11 13:01:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6a92c617c4194da59f248a9f0137bf7c SHA-1: 755677fb73fe3718fe057d3be67bb9dd3ba9ab5f SHA-256: f063f703dbbc58866d8db5d875afedd571be8a56bab53bff426e9207bc44c4c3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a free generator for game currency. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially harmful websites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/coin-master-hacks-for-free-spins-game-hack In PDF document text
    • https://www.gornjastubica.hr/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/free-daily-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/free-attacks-coin-master_GM406889139.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/coin-master-free-spins-link-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/hack-the-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/roblox-premium-free_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/collect-free-spin-linms-coin-master_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/coin-master-hack-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004901.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4901 25108 bytes
SHA-256: 012e1b20045474749e359d15c5d43e6de7d149fd4599786977e2be75b9d8bb8b
font_01_sfnt_off00008271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8271 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00008d9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D9B 18056 bytes
SHA-256: 12d79a7ddbb75c7a0854102822057d5441bee2ca4a20c79f8211a3d0b9a1f375

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