Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b474fcb13a92832…

MALICIOUS

PDF

36.9 KB Created: 2021-05-21 16:04:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bee71733cc899891f48352092320d3b3 SHA-1: b083384e393e0887d4d5f07bd9412d2b8bac4183 SHA-256: 8b474fcb13a9283287e9db4d8a4eee5c388385f2e0175462a91e3bc4cbcd6469
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising "Roblox Hacked Version" and "free generator" lures. The ML classifier also flagged this PDF as malicious. The embedded links likely lead to further stages of malware delivery or phishing. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/431946152/roblox-hacked-version-game-hack In PDF document text
    • http://eooe.gr/images/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/buy-robux-free_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_off000032b8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32B8 25428 bytes
SHA-256: 93b2009da6cdbf446b1b8a9f77afe0618dbbd5b229882b6e6991ef868ac72b43
font_01_sfnt_off00006da5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA5 18608 bytes
SHA-256: 1ecc9580a68a9d8cddaeb68f5ba7642643800a9b47dfc5932154ad501a7e9da7

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