Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f35c6c6cf3cbb40…

MALICIOUS

PDF

39.0 KB Created: 2021-05-22 15:13:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 9f7aded9a2e17b362c614479e286dbca SHA-1: 7104cfbb217bf132687a68dd2cbd4ee88aed61a3 SHA-256: 6f35c6c6cf3cbb40b71c758b1b7f050b7c7abfb161b63cca7d24563e8794fb9b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as 'free generators' or 'game hacks' to entice users. The document body also contains a call-to-action phrase, reinforcing the lure. The primary goal appears to be redirecting users to potentially malicious websites for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

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/835599320/tiktok-viewer-free-game-hack In PDF document text
    • http://gingerscience.co.in/images/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://gingerscience.co.in/images/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://gingerscience.co.in/images/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • http://gingerscience.co.in/images/hack-xp-net-generators-coin-master_GM406889139.pdfIn PDF document text
    • http://gingerscience.co.in/images/coin-master-hack-app-for-ios_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_002_off000031df.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31DF 33412 bytes
SHA-256: 5a279657569802413ccec3784b954de90f9c97c3589ce23114b8b5652f93c52f
font_01_sfnt_off000078e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78E0 17752 bytes
SHA-256: 03cae80738042903ed7303e5923c2b1ca7393d04b72c6adefe1e53c55c9a8aab

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