Malicious PDF — malware analysis report

Static analysis result for SHA-256 78df6066295e0ea5…

MALICIOUS

PDF

13.4 KB Created: 2019-05-01 19:22:12 +01:00 Authoring application: mPDF 5.7
MD5: bc0f3748f85ba29592096b338d57ff52 SHA-1: 6dde0704011a26c31e22adbb761908be236521bb SHA-256: 78df6066295e0ea509a2c32345643b2f3fe8eb7d4fd25757639fb6ae52726c3a
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a mass of external links, identified as a PDF_SEO_LINK_FARM heuristic. While the URLs themselves are currently marked as benign, the sheer volume and the ML classifier's high confidence score suggest a malicious intent, likely to distribute further malware or engage in phishing. No scripts were extracted from this sample, limiting the ability to determine the exact payload or delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9102

Heuristics 2

  • 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.
  • 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://loaminoo.linkpc.net/1094094098095092/Undeniably-You-by-Jewel-E-Ann.pdf
    • http://loaminoo.linkpc.net/8094099099093/Undeniably-You-by-Jewel-E-Ann.pdf
    • http://loaminoo.linkpc.net/1098098094097093/The-Jewel-Series-Bundle-2-Emerald-Fire-amp-Topaz-Heat-The-Jewel-Trilogy-2-3-by-Hallee-Bridgeman.pdf
    • http://loaminoo.linkpc.net/4091092092096092/Undeniably-Yours-Kowalski-Family-2-by-Shannon-Stacey.pdf
    • http://loaminoo.linkpc.net/1098097098094094/The-Jewel-Trilogy-The-Jewel-Trilogy-1-3-by-Hallee-Bridgeman.pdf
    • http://loaminoo.linkpc.net/7092095092/Look-the-Part-by-Jewel-E-Ann.pdf
    • http://loaminoo.linkpc.net/3094098098091098/End-of-Day-Jack-amp-Jill-1-by-Jewel-E-Ann.pdf
    • http://loaminoo.linkpc.net/4091098096092/A-Night-Without-Armor-by-Jewel.pdf
    • http://loaminoo.linkpc.net/2093092091098094/The-Breaking-Jewel-by-Makoto-Oda.pdf
    • http://loaminoo.linkpc.net/2099095094096098/Indiscreet-by-Carolyn-Jewel.pdf
    • http://loaminoo.linkpc.net/1094099096/End-of-Day-Jack-amp-Jill-1-by-Jewel-E-Ann.pdf
    • http://loaminoo.linkpc.net/8096094090094/Releasing-Me-Holding-You-2-by-Jewel-E-Ann.pdf
    • http://loaminoo.linkpc.net/4097093096099097/When-Life-Happened-by-Jewel-E-Ann.pdf
    • http://loaminoo.linkpc.net/4092095095091090/The-Jewel-and-Her-Lapidary-by-Fran-Wilde.pdf
    • http://loaminoo.linkpc.net/1097096094093092/The-Jewel-of-Seven-Stars-by-Bram-Stoker.pdf
    • http://loaminoo.linkpc.net/2092097093098093/Wingman-Woman-by-Bella-Jewel.pdf
    • http://loaminoo.linkpc.net/3097094093095098/The-Jewel-of-Turmish-The-Cities-3-by-Mel-Odom.pdf
    • http://loaminoo.linkpc.net/2096097092090094/Epoch-Transcend-Duet-2-by-Jewel-E-Ann.pdf
    • http://loaminoo.linkpc.net/4095099094097094/A-Night-Without-Armor-Poems-by-Jewel.pdf
    • http://loaminoo.linkpc.net/3095094097095090/Gypsy-Jewel-by-Patricia-McAllister.pdf

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