Malicious PDF — malware analysis report

Static analysis result for SHA-256 54b6cc85b220f8ce…

MALICIOUS

PDF

38.1 KB Created: 2021-05-25 06:35:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b3a8086faac2489cd02fc3009922ae54 SHA-1: ad520b29e045466df424cae031f9ca44a565d6cb SHA-256: 54b6cc85b220f8cefb96a634d2a6c6fb68d97556f7223161d2ac6d86022cf871
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks and free spins. The document body and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to download further payloads or redirect to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7010

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/406889139/haktuts-coin-master-free-spins-game-hack In PDF document text
    • http://www.reikiusui.it/images/pubg-uc-india-price_GM1330123889.pdfIn PDF document text
    • http://www.reikiusui.it/images/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.reikiusui.it/images/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://www.reikiusui.it/images/free-roblox-animations_GM431946152.pdfIn PDF document text
    • http://www.reikiusui.it/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn 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_002_off00003107.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3107 24320 bytes
SHA-256: 4b7a6501e50a5889e044710d7e9ada74a713de65550ab96de3f5f2433cf12a07
font_01_sfnt_off000068b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B5 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off000073de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73DE 18196 bytes
SHA-256: d21f7c9777ff22c572caba6bc61bff535e054503ba9d308437b2513133ac2854

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