Malicious PDF — malware analysis report

Static analysis result for SHA-256 a60e012abff30a27…

MALICIOUS

PDF

36.3 KB Created: 2021-05-10 12:02:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 64120c586e22acb085643f7f1dd4a6da SHA-1: e0d2e564c60638c3a6dee785648d79c9179995e3 SHA-256: a60e012abff30a27a03314c972a30aed46e231b68acb4c6e4b0830719fc1c8dd
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting a 'Coin Master Free Spins' generator. The document body explicitly contains a call-to-action phrase and a URL that is flagged as a malicious redirector. This suggests a phishing or scam attempt designed to lure users to a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0312

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/coin-master-free-spins-whatsapp-link-game-hack In 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_003_off00003453.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3453 24968 bytes
SHA-256: 9afd1dbbe0ad3b7e93594bdb24271d9864f4f1bedb3d9f22ac9c79d89ea0674b
font_01_sfnt_off00006c66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C66 18420 bytes
SHA-256: bc1e597ae7b48ebdae567aa0f7d6bde22430efc02453d02bc2936cbc51cea71a

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