Malicious PDF — malware analysis report

Static analysis result for SHA-256 e871410ab7294a87…

MALICIOUS

PDF

23.7 KB Created: 2019-04-30 04:27:14 +01:00 Authoring application: mPDF 5.7
MD5: 63074157b5306c9e8670751b81497d91 SHA-1: 6cfe43f2fbf597719791627bb7abc797c2119c4b SHA-256: e871410ab7294a8799a5ce3dbe552f037227ae66194299202f3fa9463a4e7a71
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. While many of these links point to benign content, the sheer volume and the nature of the heuristic suggest a malicious intent, possibly for SEO poisoning or to serve as a lure for further malicious activity. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9903

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://seasasac.lflinkup.com/2da6da1da1da8da4/Twitter-Wit-Brilliance-in-140-Characters-or-Less-by-Nick-Douglas.pdf
    • http://seasasac.lflinkup.com/2da2da4da2da6da6/Twitter-Wit-Brilliance-in-140-Characters-or-Less-by-Nick-Douglas.pdf
    • http://seasasac.lflinkup.com/9da2da3da7da9da2/Middle-Earth-Characters-Characters-in-the-Children-of-Hurin-Characters-in-the-Hobbit-Characters-in-the-Lord-of-the-Rings-by-Source-Wikipedia.pdf
    • http://seasasac.lflinkup.com/6da8da4da2da9/Hatching-Twitter-A-True-Story-of-Money-Power-Friendship-and-Betrayal-by-Nick-Bilton.pdf
    • http://seasasac.lflinkup.com/2da7da6da0da1da4/Breathing-Life-Into-Your-Characters-How-to-Give-Your-Characters-Emotional-amp-Psychological-Depth-by-Rachel-Ballon.pdf
    • http://seasasac.lflinkup.com/8da3da6da2da6da1/Characters-in-Fantasy-Novel-Series-of-the-21st-Century-Anita-Blake-Characters-in-the-Echorium-Sequence-Sookie-Stackhouse-Allomancer-by-Books-LLC.pdf
    • http://seasasac.lflinkup.com/4da3da4da5da9da6/Fragile-Brilliance-Shifters-amp-Seers-1-by-Tammy-Blackwell.pdf
    • http://seasasac.lflinkup.com/5da1da3da9da3da6/Thomas-Lawrence-Regency-Power-amp-Brilliance-by-Cassandra-Albinson.pdf
    • http://seasasac.lflinkup.com/1da0da9da4da6da0da9/The-Bright-Idea-Deck-Breakthrough-to-Brilliance-by-Eric-Hotz.pdf
    • http://seasasac.lflinkup.com/1da1da6da5da4da4/Unquestioned-Brilliance-Navigating-a-Fundamental-Leadership-Trap-by-John-Austin.pdf
    • http://seasasac.lflinkup.com/1da0da9da3da5da1da8/The-Munsters-Characters-List-of-the-Munsters-Characters-Marilyn-Munster-Herman-Munster-Lily-Munster-Grandpa-Eddie-Munster-by-Books-LLC.pdf
    • http://seasasac.lflinkup.com/1da1da1da3da2da0da6/Phineas-and-Ferb-Fanon---Angelina747-Characters-Characters-of-Miriam-Nicole-Gomez-Shapiro-an-Interview-with-Nicole-Emily-and-Sophie-Franziska-Gomez-Shapiro-Jacqueline-Leroy-Nicole-Gomez-Shapiro-Sahra-Graziano-Zwei-Kletten-Und-Ein-Schnabeltier-Com-by-Source-Wikia.pdf
    • http://seasasac.lflinkup.com/1da0da8da3da5da3da6/A-Twitter-Year-by-Kate-Bussmann.pdf
    • http://seasasac.lflinkup.com/6da1da5da4da7da5/How-to-Leave-Twitter-by-Grace-Dent.pdf
    • http://seasasac.lflinkup.com/8da0da0da3da8/Twitter-for-Writers-by-Rayne-Hall.pdf
    • http://seasasac.lflinkup.com/3da5da3da5da7da8/Twitchhiker-How-One-Man-Travelled-the-World-by-Twitter-by-Paul--Smith.pdf
    • http://seasasac.lflinkup.com/5da1da8da1da5/Beyond-Tweeting-Build-Influence-on-Twitter-by-David-V-Kimball.pdf
    • http://seasasac.lflinkup.com/3da2da1da1da9da6/Nick-of-Time-Nick-McIver-1-by-Ted-Bell.pdf
    • http://seasasac.lflinkup.com/6da1da8da9da1da6/Twitter-and-Tear-Gas-The-Power-and-Fragility-of-Networked-Protest-by-Zeynep-Tufekci.pdf
    • http://seasasac.lflinkup.com/9da3da5da5da1da0/Folge-dem-blauen-Vogel---Die-Twitter-Story-Bekenntnisse-eines-Kreativen-by-Biz-Stone.pdf
    • http://seasasac.lflinkup.com/8da3da6da2da6da1/Characters-in-Fantasy-Novel-Series-of-the-21st-Century-Anita-B

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