Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4cc801f5d04dd04…

MALICIOUS

PDF

37.0 KB Created: 2021-05-16 10:04:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f02bce0da07208832c299b550d989cf2 SHA-1: ac09a96853c796aa4822f9273018a4cfa95d67a6 SHA-256: c4cc801f5d04dd04c61b6c29a228e8a09e0316d60ee7f5bf2eeec82ddc67a018
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting a 'game hack'. The presence of a 'download button' lure and the redirection to a URL associated with malicious activity strongly suggest a phishing or scam attempt. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a malicious workflow designed to trick users into visiting harmful sites.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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/hack-game-plus-com-coin-master-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_off00003415.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3415 24344 bytes
SHA-256: db58e8583cafdaecff9f991961cb7b7008bc904d7915b7ffc817337506133234
font_01_sfnt_off00006b70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B70 19596 bytes
SHA-256: 54cfc319491ff419e596332b71d96074668908e4efa6bf7eb16febfaa5f455e6

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