Malicious PDF — malware analysis report

Static analysis result for SHA-256 22d7d1c211974b2b…

MALICIOUS

PDF

13.5 KB Created: 2019-04-30 02:38:50 +01:00 Authoring application: mPDF 5.7
MD5: a1a5fb8d8b1eda723b8407f1381a121b SHA-1: c1779196e0f6595cd74578d0b5cdd094aa948410 SHA-256: 22d7d1c211974b2b0c4d9faaabbc1e4d2e1b6d1e9371a6e1a862385604a663bf
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious. It contains a large number of embedded links, identified as a PDF_SEO_LINK_FARM heuristic, pointing to various PDF documents hosted on loaminoo.linkpc.net. While the document body text is heavily corrupted, the presence of numerous external links suggests a potential attempt to manipulate search engine results or distribute further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9877

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/5090093098099093/Origin-of-the-Sphinx-Sphinx-0-5-by-Raye-Wagner.pdf
    • http://loaminoo.linkpc.net/3090092094099092/Origin-of-the-Sphinx-The-Sphinx-0-5-by-Raye-Wagner.pdf
    • http://loaminoo.linkpc.net/1092095097099098/Cursed-by-the-Gods-The-Sphinx-1-by-Raye-Wagner.pdf
    • http://loaminoo.linkpc.net/1097095092099094/Demigods-and-Monsters-Sphinx-2-by-Raye-Wagner.pdf
    • http://loaminoo.linkpc.net/1092090090099090/Sphinx-s-Queen-Sphinx-s-Princess-2-by-Esther-M-Friesner.pdf
    • http://loaminoo.linkpc.net/4098095091096094/Sphinx-s-Princess-Sphinx-s-Princess-1-by-Esther-M-Friesner.pdf
    • http://loaminoo.linkpc.net/1095098095099094/The-Slayer-and-the-Sphinx-The-Slayer-and-the-Sphinx-1-by-Adam-Bolander.pdf
    • http://loaminoo.linkpc.net/7097091092095091/The-Sphinx-by-Chew-Toy.pdf
    • http://loaminoo.linkpc.net/7097090099094094/The-Sphinx-by-Graham-Masterton.pdf
    • http://loaminoo.linkpc.net/5099095094093093/The-Sphinx-by-Octave-Feuillet.pdf
    • http://loaminoo.linkpc.net/7097090099098099/Sphinx-by-David-Lindsay.pdf
    • http://loaminoo.linkpc.net/7097091090098093/The-Pyramids-And-Sphinx-by-Desmond-Stewart.pdf
    • http://loaminoo.linkpc.net/7097090099099091/Pagan-s-Sphinx-by-William-Webster.pdf
    • http://loaminoo.linkpc.net/5096090098097092/Sphinx-An-Excerpt-by-Anne-Garr-ta.pdf
    • http://loaminoo.linkpc.net/7097091092091090/The-House-Of-The-Sphinx-by-Sarah-Wisseman.pdf
    • http://loaminoo.linkpc.net/7097091092090099/The-Black-Sphinx-by-Matt-Hart.pdf
    • http://loaminoo.linkpc.net/3093092098094091/The-house-of-the-Sphinx-by-Lord-Dunsany.pdf
    • http://loaminoo.linkpc.net/1092090097096092/The-Secret-of-the-Sphinx-by-Samuel-Bavli.pdf
    • http://loaminoo.linkpc.net/7097091092095095/Queen-Moo-And-The-Egyptian-Sphinx-by-Augustus-Le-Plongeon.pdf
    • http://loaminoo.linkpc.net/7097091092096098/Home-Buying-Answer-Book-by-Sphinx.pdf
    • http://loaminoo.linkpc.net/5099095094093093/The-Sp

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