Malicious PDF — malware analysis report

Static analysis result for SHA-256 0076e50a7440b8ce…

MALICIOUS

PDF

43.4 KB Created: 2021-05-16 15:02:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 1a4a59cc41202e28fd73bdf4951bf7b2 SHA-1: 22a3cac5aabbcc0fc635d313642f855d3fe9c358 SHA-256: 0076e50a7440b8cea2baa572b4aba0e9d388e36c128908b74f668f786230a7fd
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, many of which point to pages offering "hacks" or "free items" for popular games like Roblox and Coin Master. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a link farm designed to attract traffic or distribute malicious content. The ML classifier also flagged this PDF as malicious with high confidence. The document body and extracted URLs strongly suggest a scam or phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://netcdn.xyz/app/431946152/how-to-get-free-robux-on-ipad-game-hack PDF link annotation
    • http://jaeger-bauplanung.de/images/robux-hack_GM431946152.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/coin-master-twitter-free-spins_GM406889139.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/roblox-demon_GM431946152.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/roblox-bux-free_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_off000049f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49F2 26204 bytes
SHA-256: 3bd65d0733ba20da5dd92b12262173c43d66e724865f755a843ae72918800b43
font_01_sfnt_off00008594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8594 18860 bytes
SHA-256: df018bfb15659bb80b7243956be10673ebd99e13a4c75edb6b924f306f4c3bfe

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