Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6a2eb05361c4206…

MALICIOUS

PDF

41.8 KB Created: 2021-05-10 13:15:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: a7e0cef6c0ed335ecbaa8764ff0a3e4b SHA-1: 3e79290cc979ced7e8d864b9a29b4b7e793c41ae SHA-256: b6a2eb05361c4206e838cd5818fc2d5d82658bccb74efcfa32bd10dab2cb8d8e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free game hacks' and generators. The ML classifier also flagged the document as malicious. The embedded links are designed to trick users into visiting potentially harmful websites, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8902

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-roebucks-for-free-game-hack In PDF document text
    • http://meisterhaus-guterl.de/images/coin-master-game-android-free-download_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/coin-master-free-in-app-purchases_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003aa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AA0 25856 bytes
SHA-256: 8af154632eb837850efbb0cd61b21bb495fa465f7790bd05d20581b63abe255b
font_01_sfnt_off000075c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75C1 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off000080eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80EB 18572 bytes
SHA-256: 9b0926f851b5352a1c94160dd5570857b20d788284ad3dea1803889ab4bbc101

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