Malicious PDF — malware analysis report

Static analysis result for SHA-256 d58a0a9d0cfdd15f…

MALICIOUS

PDF

35.8 KB Created: 2021-05-21 00:12:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: e41e3e691483daa2c00d3b9a324d98d7 SHA-1: 6a5abd6081ef922c917af3f42dc89fb94554ffe6 SHA-256: d58a0a9d0cfdd15fefa2792a3ae437bf4d9cadf23f23f26a62d2cdef4d1450dc
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free generator / game hack' and Windows 10, directing users to a malicious URL. This URL is flagged as a known malicious redirector, indicating an attempt to lead the user to a harmful site. The document body, though partially obfuscated, contains references to the lure and the malicious URL, reinforcing the phishing attempt.

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/do-you-get-windows-10-minecraft-for-free-with-java-game-hack In PDF document text
    • https://discord.ggIn 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
font_00_sfnt_off00002fd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD3 24324 bytes
SHA-256: d8187fcb620647ca7eadf978429def3715bab4caa193fe7ed26589a03ebacb1b
font_01_sfnt_off0000674d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x674D 19440 bytes
SHA-256: 4f6116c3ae1f04b8b6121a0b0d1b9b447449cf69c412c2009f2ae6d1f9a529b7

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