Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2b73ae95911f6fe…

MALICIOUS

PDF

33.8 KB Created: 2021-06-17 16:28:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a81b10a3d5616317a9a078b60a8ebc65 SHA-1: 40546b38398e8795dfe903cb5fdd3ccddc0aa716 SHA-256: c2b73ae95911f6fea1ccf6af52849df7e1d3aaf33cb8cca8c0f24c98a5937f43
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and a call-to-action phrase, directing users towards a known malicious redirector infrastructure. The primary lure appears to be related to game hacks for popular titles like Roblox and Minecraft. No scripts were extracted, but the embedded URLs and heuristic firings strongly indicate a phishing or scam attempt designed to lead users to potentially harmful content.

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/roblox-adopt-me-hack-mascotas-game-hack In PDF document text
    • https://www.romedia.gr/images/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.romedia.gr/images/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/free-synapse-download-roblox_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/how-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • https://www.romedia.gr/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/roblox-online-free_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/new-hack-for-roblox-2021-december-dpownload-medefire_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/roblox-free-model-roillercoaster_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/hacking-code-text-chat-roblox_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/nicsterv-roblox-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/stop-roblox-from-shutting-down-cheat-engine_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • https://www.romedia.gr/images/how-to-get-minecraft-pocket-edition-for-free_GM479516143.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_off00002dd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DD5 22012 bytes
SHA-256: eb0e7a71a8ace3bb083bb316ffa9dbf6816f717df334cfd642b8ed202f4aeeae
font_01_sfnt_off00005e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E85 19120 bytes
SHA-256: 6dc9a928bc13da9f061b068257eb169b3b4c2b48739f71fdccb1294fd168eb21

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