Malicious PDF — malware analysis report

Static analysis result for SHA-256 260dae11faec33b0…

MALICIOUS

PDF

43.8 KB Created: 2021-05-13 13:26:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: be5e951444e5d0b342cd1c8f89b943e2 SHA-1: b5e5a2234528bcd0f4cfbccdaac87e812d905a53 SHA-256: 260dae11faec33b0254e06982a80449d4a088d31b31d3e3297ab34bc4531ba0b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to known malicious redirectors, disguised as a lure for free in-game currency. The ML classifier strongly flagged this PDF as malicious. The embedded URLs are designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/406889139/how-to-get-free-coins-and-free-spins-coin-master-game-hack In PDF document text
    • http://kontaktadig.se/images/coin-master-daily-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/free-spins-generated-from-coin-master_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/minecraft-free-download-ipad_GM479516143.pdfIn PDF document text
    • http://kontaktadig.se/images/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • http://kontaktadig.se/images/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/hack-master-coin-pc_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/can-you-give-me-robux_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://kontaktadig.se/images/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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_off00004a9a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A9A 27648 bytes
SHA-256: 90fd9f60a03eb1811ce68fd8f17a99ecd7cfee65293827c7df6078b9b67bac2f
font_01_sfnt_off0000893a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x893A 18224 bytes
SHA-256: 6ff065ff9cf4369595bb0f81e6036a3cab0df59e99953b81d0b04354ed6a0bad

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