Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e4ead3024b336c5…

MALICIOUS

PDF

33.8 KB Created: 2021-06-25 15:04:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e82bca6ef9c79b0caa8a4702c178eb67 SHA-1: 40953cdcad374e272670eccacd2e8a63a340cde0 SHA-256: 8e4ead3024b336c544d2351148f8e8858da43b6e770cf1d1851dfd7dd2b399db
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a large number of external links, many of which are SEO-optimized and point to pages related to game cheats and hacks, suggesting a link farm or phishing attempt. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick users into clicking malicious links. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/freer-robux-codes-game-hack PDF link annotation
    • https://wandpiraten.de/images/is-tiktok-free-on-ipad_GM835599320.pdfIn PDF document text
    • https://wandpiraten.de/images/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/tlh-hack-roblox_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/free-lvl7-full-lua-roblox_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/como-hackear-un-usuario-en-roblox_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/flood-escape-2-infinite-jump-roblox-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/free-robux-with-out-rewards_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • https://wandpiraten.de/images/how-to-get-a-free-dominus-in-roblox-2021-march_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • https://wandpiraten.de/images/roblox-hack-scripprison-ecape_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/how-to-hack-using-roblox-developer-console_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://wandpiraten.de/images/robux-cheats-that-work_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/robux-hack-tools_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • https://wandpiraten.de/images/how-to-get-free-robux-without-having-to-do-anything_GM431946152.pdfIn PDF document text
    • https://wandpiraten.de/images/roblox-free-pants_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
font_00_sfnt_off00002d93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D93 22380 bytes
SHA-256: 18ff2e1dc1e970875c0a564df821187134557675a6049805a9e5f654201727fc
font_01_sfnt_off00005f89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F89 18888 bytes
SHA-256: 0b210ae1d2f25d9b8ac974921f9fa88679103a832855b836aa7747c7a59cf8bc

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