Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e8b2e71309294d4…

MALICIOUS

PDF

40.4 KB Created: 2021-05-21 23:19:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 81535aed9dc1ae306cfac0aa8f06e87c SHA-1: 113b08bbc16568a8ec31f71fad7369608e81410e SHA-256: 6e8b2e71309294d41dabc1c74ee94e4ad89bf9ef4017846d311e364c84e12ee7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The embedded URLs are designed to trick users into downloading further malware or visiting malicious sites. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7776

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/479516143/minecraft-skins-download-free-game-hack In PDF document text
    • http://kermas.eu/images/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/coin-master-hack-download-ios_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/free-robux-hack-generator_GM431946152.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_002_off00003640.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3640 27208 bytes
SHA-256: d74ad6cd32b791c70d7499918701da538b88c868ebb6460e119b6f6ff402b61c
font_01_sfnt_off00007264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7264 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off00007c03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C03 18460 bytes
SHA-256: 54d3aeb7b3beebea3cfa48561b043312cf5d8c01a954df644a6f0691dd3f9e10

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