Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d7ccf452c21d5c3…

MALICIOUS

PDF

35.2 KB Created: 2021-05-10 12:53:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5adb24f1e0bcf8678c80048060a919f5 SHA-1: dafcc9fe9fd429516c9c4bd04dd4b098427bf9d0 SHA-256: 7d7ccf452c21d5c30f0a4d4b014176e15ce9da1e31a2fc134c62f45c106c5597
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically advertising a "Coin Master Pro Hack". The document body also contains text and a button lure related to accessing this generator. While no scripts were extracted, the presence of malicious redirector links strongly suggests an attempt to lure users to a site that likely hosts further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier clean score 0.0306

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-pro-hack-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_off00003324.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3324 23876 bytes
SHA-256: 6d088bfc875659a434a16095b98cb7621c462a793dc51c57ffba5888787d0dd3
font_01_sfnt_off00006963.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6963 17868 bytes
SHA-256: 6fc94cfc5e353177abc481ae17561ea3edb8d825f50582b916d0cbb0f569bfa7

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