Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b6565f5f6b970d8…

MALICIOUS

PDF

36.2 KB Created: 2021-05-20 23:20:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: e6c2fda187375fddac71a45d9d4dce6f SHA-1: 89c73224a1a5f3fcd8318741b0e1ea4dd6fbec89 SHA-256: 8b6565f5f6b970d819f16ddf8349d6c26cfc9aec9dc9edbe0b2bf8b69c1f7df9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generators' or 'game hacks' to entice users. The document body and heuristics indicate a lure designed to lead users to potentially harmful websites. No scripts were extracted, but the embedded URLs and redirector firings strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/835599320/free-tiktok-followers-instantly-game-hack In PDF document text
    • https://www.manmed.info:443/images/actual-free-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/500-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-free-robux_GM431946152.pdfIn 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_off00003018.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3018 27012 bytes
SHA-256: e64c39eda798f0400b08205c46cac4499794f9c19f4e1725afb98727d8d5a2f9
font_01_sfnt_off00006ca0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA0 18100 bytes
SHA-256: f27faf11ab9b731ff59c8a2736de67f71ae1dcd874c0843e76df7710bacb1c6d

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