Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8dd789ecbe4abee…

MALICIOUS

PDF

41.5 KB Created: 2021-05-13 04:42:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0645ef47aced2361c42c966204bb551c SHA-1: 6f37bf350a8b3f93afc0d0c363d3fe28947aefc5 SHA-256: e8dd789ecbe4abee3d4e6a959e4595c616784e797ee4530b47cec58e0686bfc9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to known malicious redirectors, specifically advertising 'free generators' and 'game hacks' for popular games. The document body and heuristics indicate a lure designed to trick users into clicking these links, likely leading to further malware downloads or phishing pages. No scripts were extracted, but the presence of malicious links and the lure content strongly suggest a phishing or malware distribution attempt.

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/406889139/coin-master-daily-free-spins-link-facebook-game-hack In PDF document text
    • http://malichy.pl/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://malichy.pl/images/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://malichy.pl/images/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://malichy.pl/images/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://malichy.pl/images/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://malichy.pl/images/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://malichy.pl/images/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://malichy.pl/images/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • http://malichy.pl/images/coin-game_GM406889139.pdfIn PDF document text
    • http://malichy.pl/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://malichy.pl/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://malichy.pl/images/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://malichy.pl/images/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
    • http://malichy.pl/images/coinmasterfreespinlink_GM406889139.pdfIn PDF document text
    • http://malichy.pl/images/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://malichy.pl/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://malichy.pl/images/collect-free-spin-linms-coin-master_GM406889139.pdfIn PDF document text
    • http://malichy.pl/images/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://malichy.pl/images/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://malichy.pl/images/how-to-get-free-pet-snacks-in-coin-master_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_off00004747.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4747 24264 bytes
SHA-256: 3094b3cc1c8705aa581529133b7f4b912c6ba390fb5caafe02ea976e73515dbe
font_01_sfnt_off00007ec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC6 18636 bytes
SHA-256: 50d107b0548bd3d005e8b5e4f9cf847a43b3082c8a2089b5591d39299d79db66

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