Malicious PDF — malware analysis report

Static analysis result for SHA-256 86f066bfe75b35a2…

MALICIOUS

PDF

37.7 KB Created: 2021-05-22 11:21:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 07dedfcbec6007ef30eba786f73ba007 SHA-1: 53ee23af5cfabdf3863fbcbd43c2363dcfe55cf5 SHA-256: 86f066bfe75b35a254f7024cd1fa8fef8a0fd4299bd2a743d960b11c23248c45
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a high-confidence heuristic firing for a 'game hack' redirector lure. The document body and heuristics indicate a lure related to free Minecraft capes and generators, aiming to trick users into clicking malicious links. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7010

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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 https://netcdn.xyz/app/479516143/free-minecraft-capes-game-hack PDF link annotation
    • http://paro.net.ua/images/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://paro.net.ua/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://paro.net.ua/images/hack-the-coin-master_GM406889139.pdfIn PDF document text
    • http://paro.net.ua/images/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • http://paro.net.ua/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://freegiftcodes.euIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003221.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3221 24652 bytes
SHA-256: 30c2a79de80e584a0405d83695a6b9263fae6bb5ce504cb3b963ca32044c0cec
font_01_sfnt_off0000699a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x699A 2840 bytes
SHA-256: 787e0768241fb57660bcc9c7f726cf687277c463cdf8c586c4782ee9d03c3606
font_02_sfnt_off00007358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7358 17744 bytes
SHA-256: dedc931f5c8bac627c7a83c769fddbd093390c6d69f02f50ba531346133b4d17

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