Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c479faf08f511ed…

MALICIOUS

PDF

37.5 KB Created: 2021-05-21 20:05:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8261b029bb1ca5a03951ad7e34560224 SHA-1: 46e7e05f95304182462135f0499a2c213f15baa4 SHA-256: 5c479faf08f511ed7fc3f6ee00cdaa329b8b83ca65dcfdf0f46d67e4e670cee0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple embedded URLs pointing to websites offering game hacks and cheats for popular games like Coin Master and Roblox. The presence of a "download button" heuristic and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading potentially harmful content. No scripts were extracted, but the document's structure and external links strongly suggest a phishing or social engineering attack.

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/coin-master-free-soins-game-hack In PDF document text
    • http://empresa-venta.hr/files/what-is-coin-master_GM406889139.pdfIn PDF document text
    • http://empresa-venta.hr/files/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • http://empresa-venta.hr/files/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://empresa-venta.hr/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://empresa-venta.hr/files/coin-master-hack-iosgods_GM406889139.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_off0000318b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x318B 24144 bytes
SHA-256: ab4555f6ff99c9cfcb4cb94751fa28ce2f9b29533e375f0b9bdeee909329b34e
font_01_sfnt_off000068a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68A7 2868 bytes
SHA-256: d2d857e2ddc1082c7667b23f2135a5c0ba26a2ff8b42c86c89c8e0b09aece855
font_02_sfnt_off00007292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7292 17712 bytes
SHA-256: a621fa0cf6ecf429ccb0e9762dad0d1971a2824e8730eca88621f5efe7e14995

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