Malicious PDF — malware analysis report

Static analysis result for SHA-256 2efaf6729f20712e…

MALICIOUS

PDF

42.3 KB Created: 2021-05-14 08:48:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d307895556bafc2cf9651e87fe212a2e SHA-1: 1a6654a5e3b9601cd42aa54cea525be4e16055db SHA-256: 2efaf6729f20712e1fd3f8e9bf7e5a0a6a065aecd2ef584f133315331954a266
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains multiple links that redirect to known malicious infrastructure, disguised as game hacks or free generators. The document body and embedded URLs strongly suggest a lure to trick users into visiting malicious sites. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/how-long-is-the-minecraft-free-trial-game-hack In PDF document text
    • http://i-koinoxrista.gr/images/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/robux-link_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/what-is-wurst_GM479516143.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/free-spins-generated-from-coin-master_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/robux-page_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/e-free-roblox_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/coin-master-hack-online-generator-without-human-verification_GM406889139.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_003_off00004b4b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B4B 24612 bytes
SHA-256: 31433a1eddb806823bbabaf6f5522c193a3df49d886b34e92738212fb77bb532
font_01_sfnt_off000082fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82FA 18404 bytes
SHA-256: a06c3727584f03e67681882c5fba84b6811554b03e9a9932a6f4547f5427a867

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