Malicious PDF — malware analysis report

Static analysis result for SHA-256 6127aed7b890e504…

MALICIOUS

PDF

49.0 KB Created: 2021-05-22 09:44:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7e697aecad799d259dd4117dabe1381b SHA-1: d4dad2c8126f81a5e50ef6d610fe65f85c7514e2 SHA-256: 6127aed7b890e504c5348811de92315db0acacf18f1e2b35882cbcd12172a3b8
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting a 'free generator / game hack'. The document body and heuristics indicate a lure for users to click these links, likely leading to further malicious content or downloads. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3699

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-spin-link-for-coin-master-game-game-hack In PDF document text
    • http://mou16-murmansk.ru/images/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/rewardex-robux_GM431946152.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://mou16-murmansk.ru/images/coin-master-free-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000355c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x355C 26148 bytes
SHA-256: a18a3fe9a54c88c36b24a108a17a9643c5607612a3944aaa34105c7549426706
font_01_sfnt_off000071ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71AD 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off00007c78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C78 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off00008f9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F9E 18316 bytes
SHA-256: 4ad106dc66915d7a7c54c506e35e2e74cb7406920644c521a55874c4c44ea7c2
font_04_sfnt_off0000b19b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB19B 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0