Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d5ed804d7ec64ef…

MALICIOUS

PDF

37.1 KB Created: 2021-05-21 15:36:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 628aa3a802fecd1f2c14a3b15913ff00 SHA-1: 39a3218613c2f9fb85fc89496fc04ff80807e267 SHA-256: 9d5ed804d7ec64ef6f84a649d6acb8f63fcbaefacf3cc11d0b7a990aadc0db7d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action button designed to trick users into downloading a file, presented as a 'free generator' or 'game hack'. The embedded URLs point to redirectors and potentially malicious PDF files, indicating a phishing or malware distribution attempt. No scripts were extracted, but the document structure and heuristics strongly suggest a social engineering lure.

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/how-to-get-free-robux-2021-game-hack In PDF document text
    • http://precitool.ch/images/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
    • http://precitool.ch/images/free-minecraft-com_GM479516143.pdfIn PDF document text
    • http://precitool.ch/images/roblox-games-to-play-for-free_GM431946152.pdfIn PDF document text
    • http://precitool.ch/images/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • http://precitool.ch/images/games-on-roblox-that-give-you-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_off000035df.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35DF 24676 bytes
SHA-256: 453140491ac86cae065675fef2e53f6db3f00d7926fa704639cb751f0cff96c5
font_01_sfnt_off00006e4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E4E 18684 bytes
SHA-256: 662354714a7c4aa127b8bd681013e9d5d113fbfc5a2f5afb2d34764175bb04a5

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