Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c3082598844c41c…

MALICIOUS

PDF

43.5 KB Created: 2021-05-10 13:38:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 807980cd0b5f33704bb2da98d0c486b2 SHA-1: 0bfba5e6287907d2e9314eef94af19a0f029b460 SHA-256: 7c3082598844c41cde9ea7fc23f442ebc515f164e086e990372e5bb0862361ea
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically promoting 'free generator / game hack' lures. The document body, though partially corrupted, contains text related to game hacks and a primary redirect URL. The presence of multiple links to potentially malicious domains suggests an attempt to lead the user to a compromised site or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9075

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-coins-2021-coin-master-link-game-hack In PDF document text
    • http://italianconnectionsleaford.co.uk/images/give-free-robux_GM431946152.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/wurst-112_GM479516143.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/minecraft-client-download_GM479516143.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/minecraft-apk-android-free_GM479516143.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_off00003cdc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3CDC 24716 bytes
SHA-256: ca52c1d2e52b2cf06f51cacd9dc84ecf7f88690ab99cb82f75ae3357d6491f03
font_01_sfnt_off00007619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7619 7332 bytes
SHA-256: d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d
font_02_sfnt_off00008831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8831 18284 bytes
SHA-256: 44e7f09bb3e55560ed6b3e28d1dba29242186833d4e458deb15a61ccc134217c

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