Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b9e78b87030314d…

MALICIOUS

PDF

31.1 KB Created: 2019-04-30 04:19:08 +01:00 Authoring application: mPDF 5.7
MD5: bcc4df8668198463dbd57560e757e322 SHA-1: bc9b7fba9b7536f586caee2cdf29e5c83fc9fae1 SHA-256: 9b9e78b87030314db2ef892c832721d0412039d7018b9b7f1b53dcd2325869df
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. While many of these URLs were individually confirmed as benign, the sheer volume and the nature of the heuristic suggest a malicious intent, possibly for SEO manipulation or to serve as a landing page for further malicious activity. The ML_NYX_PDF_MALICIOUS classifier also strongly indicated maliciousness. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9670

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://muicuiu.dumb1.com/1a00a02a05a06a01/Sources-of-Chinese-Tradition-Vol-1-From-Earliest-Times-to-1600-by-William-Theodore-de-Bary.pdf
    • http://muicuiu.dumb1.com/4a09a05a01a02a03/Neo-Confucian-Education-The-Formative-Stage-by-William-Theodore-de-Bary.pdf
    • http://muicuiu.dumb1.com/7a00a01a07a07a06/Merchant-of-Venice-The-First-Tho-Worse-Quarto-1600-a-Facsimile-in-Photo-Lithography-by-William-Griggs-with-Forewords-by-by-William-Shakespeare.pdf
    • http://muicuiu.dumb1.com/8a09a05a05a02a05/History-of-Greece-from-the-Earliest-Times-to-the-End-of-the-Persian-War-Volume-1-by-Max-Duncker.pdf
    • http://muicuiu.dumb1.com/8a09a05a06a00a04/History-of-Greece-From-the-Earliest-Times-to-the-End-of-the-Persian-War-Volume-1-by-Max-Duncker.pdf
    • http://muicuiu.dumb1.com/6a00a05a05a03a03/The-History-of-Education-in-Ghana-From-the-Earliest-Times-to-the-Declaration-of-Independance-by-C-K-Graham.pdf
    • http://muicuiu.dumb1.com/5a00a07a02a05a00/Theodore-Roosevelt-and-the-American-Political-Tradition-by-Jean-M-Yarbrough.pdf
    • http://muicuiu.dumb1.com/9a06a02a06a03a04/Opium-Culture-The-Art-and-Ritual-of-the-Chinese-Tradition-by-Peter-Lee.pdf
    • http://muicuiu.dumb1.com/9a03a08a09a07a06/A-short-history-of-English-versification-from-the-earliest-times-to-the-present-day-a-handbook-for-teachers-and-students-by-Max-Kaluza.pdf
    • http://muicuiu.dumb1.com/9a03a08a08a05a08/A-Short-History-of-English-Versification-from-the-Earliest-Times-to-the-Present-Day-A-Handbook-for-Teachers-and-Students-by-Max-Kaluza.pdf
    • http://muicuiu.dumb1.com/6a00a09a04a06a02/Civilizations-of-the-East-An-in-Depth-Study-of-Asiatic-Arts-and-Cultures-from-the-Earliest-Times-to-the-Dawn-of-Modern-Era-by-Ren-Grousset.pdf
    • http://muicuiu.dumb1.com/3a06a09a02a04a08/It-All-Started-With-Stones-and-Clubs-Being-a-Short-History-of-War-and-Weaponry-from-Earliest-Times-to-the-Present-Noting-the-Gratifying-Progress-Made-by-Richard-Armour.pdf
    • http://muicuiu.dumb1.com/1a00a00a03a09a05a07/The-Monaghan-Story-A-Documented-History-Of-The-County-Monaghan-From-The-Earliest-Times-To-1976-by-Peadar-Livingstone.pdf
    • http://muicuiu.dumb1.com/2a00a01a08a09a09/Turmoil-And-Tradition-A-Study-of-the-Life-and-Times-of-Henry-L-Stimson-by-Elting-E-Morison.pdf
    • http://muicuiu.dumb1.com/7a00a01a08a08a01/Shakspere-s-King-Henry-the-Fourth-Part-II-The-Quarto-of-1600-a-Facsimile-in-Photo-Lithography-by-William-Shakespeare.pdf
    • http://muicuiu.dumb1.com/9a07a08a08a07a08/The-Chinese-Roswell-UFO-Encounters-in-the-Far-East-from-Ancient-Times-to-the-Present-by-Hartwig-Hausdorf.pdf
    • http://muicuiu.dumb1.com/6a09a09a02a05a03/Merchant-of-Venice-The-Second-and-Better-Quarto-1600-a-Facsimile-in-Foto-Lithography-by-Charles-Praetorius-With-Forewords-by-Frederick-Furnivall-by-William-Shakespeare.pdf
    • http://muicuiu.dumb1.com/1a03a03a00a01a09/Wisecracker-The-Life-and-Times-of-William-Haines-Hollywood-s-First-Openly-Gay-Star-by-William-J-Mann.pdf
    • http://muicuiu.dumb1.com/6a00a09a07a01a01/King-Lear-Text-Sources-Criticism-by-William-Shakespeare.pdf
    • http://muicuiu.dumb1.com/8a03a00a01a07a00/Georges-de-Scudery-s-Almahide-Authorship-Analysis-Sources-and-Structure-by-Jerome-William-Schweitzer.pdf
    • http://muicuiu.dumb1.com/8a09a05a06a00a04/History-of-Greece-From-the-Earliest-Times-to-the-End-of-the-Persian-War-Volume-1-by-Max-Duncker.p

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