Malicious PDF — malware analysis report

Static analysis result for SHA-256 465aa2bf7d8ab53f…

MALICIOUS

PDF

35.3 KB Created: 2021-05-24 14:10:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8695a7c37b9b65c887cf853ff0a34fe2 SHA-1: 76b6f9fa8f25fc27e0808b1f5faa7ae0982445b6 SHA-256: 465aa2bf7d8ab53f7fcbfbb604f71165a49866736a4d83273865dc4d65525204
130 Risk Score

Malware Insights

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

The PDF file contains a lure for a "free generator / game hack" which redirects to a malicious URL. This indicates a social engineering tactic to trick users into downloading potentially harmful content. The embedded URL is a known malicious redirector, suggesting the file's primary purpose is to facilitate the download of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier clean score 0.0718

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/479516143/how-to-get-minecraft-for-free-on-phone-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_002_off00002e4c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E4C 26260 bytes
SHA-256: d14820453bbc0de7da1892d7cd60960e8e8e0c7d33e4c20a7541c2b02bda5b10
font_01_sfnt_off00006998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6998 18192 bytes
SHA-256: 90b6a34edb34d309cd556a6b23817db9766b775643cedc81c4ce7203f03c64d4

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