Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d5575050706ae87…

MALICIOUS

PDF

41.2 KB Created: 2021-05-14 08:02:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: b096e86cfbce885017b2865c76b3635d SHA-1: caaa8d687ceeadf247caaf17718df9ab95b820ff SHA-256: 0d5575050706ae8789fe4fef4a8edaf9f7b6d2972a28dbcce8c37ac55cb677e2
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically a 'game hack generator' lure. This link, https://netcdn.xyz/app/479516143/is-there-a-way-to-get-minecraft-for-free-game-hack, is known to lead to malicious infrastructure. The document body and metadata confirm the lure and the application used to generate the PDF, further supporting the malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0125

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/is-there-a-way-to-get-minecraft-for-free-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000373e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x373E 27168 bytes
SHA-256: 245ab4087709ada34c715573cf555b0c751e932af8141c20b992c732c7f98f1f
font_01_sfnt_off00007595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7595 3128 bytes
SHA-256: 801f6fa60decd1add2f223f91580103c35e150c924465f86a7a572b3e00674f9
font_02_sfnt_off00007fd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD5 18252 bytes
SHA-256: de0111ade417482c0e2229237f29b3fad1c5be4a3188252229cb4f1209180f37

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