Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff601b2772955f33…

MALICIOUS

PDF

43.9 KB Created: 2021-05-10 20:06:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: adf2a02e67a959dff35d2a349557ac16 SHA-1: 317f0af181618a9f06381d72990a5fadee3afc6a SHA-256: ff601b2772955f33e18440d09d21eb8a11745f1c3464fb64bc67cf680ff89d62
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and a visual call-to-action, strongly suggesting a phishing or social engineering attempt. The ML classifier also flagged the PDF as malicious with high confidence. The primary URL points to a resource promising free coins and spins for Coin Master, a common lure for malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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/coin-master-free-coins-and-spins-link-2021-game-hack In PDF document text
    • http://gomelavto.by/images/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • http://gomelavto.by/images/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
    • http://gomelavto.by/images/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://gomelavto.by/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/free-roblox-printables_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • http://gomelavto.by/images/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/roblox-generator_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/best-tricks-co-robux_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
stream_003_off00004820.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4820 29176 bytes
SHA-256: 966385dce09ef77d0bcc98bee7f06793fc6ecd8e8f41ec9429922c059aee1e22
font_01_sfnt_off00008853.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8853 18632 bytes
SHA-256: 71f56f689d85b0b5fb096b2af3108c2926ec739bdf89e53e90d40c81af8f43d2

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