Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9585bb3fbc990b9…

MALICIOUS

PDF

17.6 KB Created: 2019-09-27 13:20:59 +01:00 Authoring application: mPDF 5.7
MD5: 04176b8cd72534c38d7c287236a7a6cd SHA-1: 9a12fc4efdd108adef32b10437db1a5f70140ab4 SHA-256: a9585bb3fbc990b9ec370c05f8958bf112f54327ac4ca63882534bf318cf918d
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier as malicious. It contains a large number of embedded URLs, many of which are numeric slugs, suggesting a link farm for SEO manipulation or to distribute further malicious content. The document body itself is heavily corrupted, but the embedded URLs are clearly visible. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9789

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://cefasfese.4pu.com/8734736736739732/Museum-of-Fine-Arts-Houston-Visitor-Guide-by-Janet-Landay.pdf
    • http://cefasfese.4pu.com/8734736736738737/A-Reason-to-Read-Linking-Literacy-and-the-Arts-by-Eileen-Landay.pdf
    • http://cefasfese.4pu.com/8734736737736731/Kangodile-A-Mix-and-Match-Menagerie-by-Janet-Landay.pdf
    • http://cefasfese.4pu.com/8734736736738734/Defending-Jacob-A-Novel-by-William-Landay-l-Summary-amp-Study-Guide-by-BookRags.pdf
    • http://cefasfese.4pu.com/8734736737736735/Inspecting-Special-Needs-Provision-in-Schools-A-Practical-Guide-by-Landay-Maria.pdf
    • http://cefasfese.4pu.com/1731736730736736736/A-Visitor-s-Guide-to-Edinburgh-by-Irvine-Welsh.pdf
    • http://cefasfese.4pu.com/5738734737732734/Versailles-Visitor-s-Guide-by-Beatrix-Saule.pdf
    • http://cefasfese.4pu.com/3735730730732739/Fine-Fine-Fine-Fine-Fine-by-Diane-Williams.pdf
    • http://cefasfese.4pu.com/8730735736735738/A-Visitor-s-Guide-to-Victorian-England-by-Michelle-Higgs.pdf
    • http://cefasfese.4pu.com/1730734739736/Earth-The-Book-A-Visitor-s-Guide-to-the-Human-Race-by-Jon-Stewart.pdf
    • http://cefasfese.4pu.com/2730735739733736/The-Visitor-Takes-a-Trip-The-Visitor-6-by-K-D-West.pdf
    • http://cefasfese.4pu.com/6739736736733738/On-the-Scent-A-Visitor-s-Guide-to-Sherlock-Holmes-s-London-by-Arthur-M-Axelrad.pdf
    • http://cefasfese.4pu.com/8734736736739733/Be-Prepared-The-Complete-Financial-Legal-and-Practical-Guide-to-Living-with-Cancer-HIV-and-other-Life-Challenging-Conditions-by-David-Landay.pdf
    • http://cefasfese.4pu.com/1736733738739733/Souls-Houston-Houston-Do-You-Read-Tor-Double-11-by-Joanna-Russ.pdf
    • http://cefasfese.4pu.com/2730735739733737/The-Visitor-Has-Company-The-Visitor-7-by-K-D-West.pdf
    • http://cefasfese.4pu.com/1738739739734731/Have-You-Got-Mustard-A-Bible-Study-Guide-for-Growing-Faith-by-Shirley-Fine-Lee.pdf
    • http://cefasfese.4pu.com/5730732734735731/Illustrated-Guide-to-the-Egyptian-Museum-by-Alessandro-Bongioanni.pdf
    • http://cefasfese.4pu.com/5735735731737730/Beaux-Arts-Architecture-in-New-York-A-Photographic-Guide-by-Edmund-V-Gillon-Jr-.pdf
    • http://cefasfese.4pu.com/2738732738737737/Academy-of-Historical-Arts-German-Longsword-Study-Guide-by-Keith-Farrell.pdf
    • http://cefasfese.4pu.com/1732734733731736/How-to-Build-a-Museum-Smithsonian-s-National-Museum-of-African-American-History-and-Culture-by-Tonya-Bolden.pdf
    • http://cefasfese.4pu.com/6739736736733738/On-the-Scent-A-Visitor-s-Guide-to-Sherlock-Holmes-s-London-by-Ar

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