Malicious PDF — malware analysis report

Static analysis result for SHA-256 117ef7e52e2aa987…

MALICIOUS

PDF

35.6 KB Created: 2021-05-22 09:07:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bb08fb416bd1264ced04c07f848e77b9 SHA-1: 440c19bc6a9df47285f4a6c0898cab8e07948dd7 SHA-256: 117ef7e52e2aa987bc26e7bc7c597336d1802641bc7163e5c4e900bfbd324e2b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains multiple links that redirect to malicious infrastructure, specifically advertising free Robux generators and game hacks. The ML classifier also flagged this PDF as malicious. The embedded links likely serve as a lure to download further malicious content or lead users to phishing sites.

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/431946152/rbxfree-com-free-robux-game-hack In PDF document text
    • http://www.sovtigaz.ru/f/files/pokemon-go-free-7km-egg-list_GM1094591345.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/haktuts-coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/free-robux-codes-generator-no-verification_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
font_00_sfnt_off00003223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3223 24296 bytes
SHA-256: 786bce3c939b968cd1ce5f37415918c1dfa9d64b48261789bdb809d5755c718a
font_01_sfnt_off000069df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69DF 18276 bytes
SHA-256: 3458f47f0b0e4c5d178391a23bbf01d917f000ba7933fbc297d15d2e5240f022

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