Malicious PDF — malware analysis report

Static analysis result for SHA-256 592901e7f3ccc5f0…

MALICIOUS

PDF

39.8 KB Created: 2021-05-25 06:34:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 099d174bd653989ef844498d1dfd6f9e SHA-1: 7a26cdc30e7525b60ee9f5fad3b60ab551faf03b SHA-256: 592901e7f3ccc5f00b58dee439f9142895a7a8b05364b9cd64ac7dffac674941
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are flagged as malicious redirectors, specifically promoting 'free generator / game hack' lures. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded links strongly suggest a phishing or redirection attempt to facilitate further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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-on-computer-game-hack In PDF document text
    • http://pesok-rk.ru/images/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://pesok-rk.ru/images/coin-master-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/easy-ways-to-get-free-robux_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_off0000335c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x335C 25504 bytes
SHA-256: ee468bfd3596ec1fe362053039e27882fbabafdeb8e9a3e415cd73a2345bfdeb
font_01_sfnt_off00006ee0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE0 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000078ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78CA 18716 bytes
SHA-256: 2c87d7c74b7bcd7fade186f781764640e14dfaf637cd5e280742c056ede93ace

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