Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d95b2f81bf43935…

MALICIOUS

PDF

36.3 KB Created: 2021-05-24 03:25:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2d5d44ef7077d16c3cd9e8afd8918a05 SHA-1: 747eb531c4722831ff0af6d4c5dabbc0810109db SHA-256: 1d95b2f81bf439355fe7e99ea0e2cc1c78a0729114f5ee0cf252853f6afd4d65
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and websites offering 'free generators' or 'game hacks' for popular mobile games like Coin Master. The document body and embedded links suggest a phishing or scam attempt to lure users to these sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious redirection and potential for further payload delivery.

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/406889139/coin-master-claim-free-spins-game-hack In PDF document text
    • http://doganov.be/images/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://doganov.be/images/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://doganov.be/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://doganov.be/images/coin-master-free-spins-link-2021-april_GM406889139.pdfIn PDF document text
    • http://doganov.be/images/how-to-get-free-unlimited-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_off0000350c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x350C 24316 bytes
SHA-256: c27b0b3e9d5b5fce183ff10c900fda65fbfb6ecda16128d88af5a679fe26070b
font_01_sfnt_off00006ce6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE6 18220 bytes
SHA-256: 4508a7247666ecd7f475af3e2510e2d7297b60fda6d209b486c2dc6be28a63e8

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