Malicious PDF — malware analysis report

Static analysis result for SHA-256 86df8c68544582e5…

MALICIOUS

PDF

35.7 KB Created: 2021-06-19 12:15:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6fcf505dd76d46b3901545130faa30dc SHA-1: e76574bbc84e0ae372074cf79b4bb4fa56ae4279 SHA-256: 86df8c68544582e5c44791b84b2b5c63e4c6b7d27c38a03129bc33cfd9217861
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free in-game currency, directing users to a malicious redirector URL. The embedded content and heuristics strongly indicate a phishing or scam attempt designed to trick users into visiting potentially harmful sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-get-free-robux-in-roblox-2021-no-download-game-hack In PDF document text
    • https://inspiration-modellbau.de/images/robux-safe-free_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/how-to-get-free-stuff-on-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/lua-c-free-camera-roblox_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/roblox-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/roblox-lua-script-snow-board-resort-hack_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/roblox-free-stone-shirt_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/robux-generator_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/hack-the-coin-master-game_GM406889139.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/robux-foxy-cheats_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/robux-today_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/coin-master-hack-apk-facebook-login_GM406889139.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/free-roblox-trolling-tips-for-frappe_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/como-hackear-roblox-apk-mediafire_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000325c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x325C 22480 bytes
SHA-256: 96d48998c50b9cba12cda14d77b80bb93989e9bf2a28c7b42b86dda61cc3ac70
font_01_sfnt_off0000643a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x643A 19804 bytes
SHA-256: c70414d98450391b291ff3068e2f0a6990ee387291babf1bf417120d5efc64a8

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