Malicious PDF — malware analysis report

Static analysis result for SHA-256 52f7c069d254a659…

MALICIOUS

PDF

41.9 KB Created: 2021-05-21 08:22:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 20549c88d2a014ba1f4fed0ded5f7f77 SHA-1: bef2b78982fd104e33526fb5ab21463460e1bc0f SHA-256: 52f7c069d254a6596eb9845428504967b83e394a6bfa348516a61dfb8b09909d
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', which is a common lure for phishing and malware distribution. The document body and embedded artifacts further support this, indicating a workflow designed to trick users into visiting these sites, which in turn host more malicious PDFs. No scripts were extracted, but the heuristic firings strongly indicate a malicious redirector chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8120

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/free-games-like-roblox-game-hack In PDF document text
    • http://g3galileo.com/images/free-minecraft-com_GM479516143.pdfIn PDF document text
    • http://g3galileo.com/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://g3galileo.com/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://g3galileo.com/images/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000335c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x335C 28104 bytes
SHA-256: e44926a0a02490be015a9db0b20b50a415f2f2a90058ab8e0a0686ce3c4b730d
font_01_sfnt_off0000748b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x748B 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00008132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8132 18724 bytes
SHA-256: c52aceaf3bf2f28584fb8940f828c012a6342ba7c3f090d8a14e40bb36c01879

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