Malicious PDF — malware analysis report

Static analysis result for SHA-256 c146dd3d9965fd24…

MALICIOUS

PDF

25.1 KB Created: 2019-05-01 18:49:02 +01:00 Authoring application: mPDF 5.7
MD5: e2b9b8af4b1c7653211ac03a3c357bad SHA-1: 76f8b0515f7c09a44c8c93adf7553e6dab04fcdc SHA-256: c146dd3d9965fd24048f1811d16da274d5d971f364b49919de56dd05c2ac741d
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains a large number of embedded URLs, identified as a PDF_SEO_LINK_FARM heuristic. While many of these URLs are marked as benign, the sheer volume and the nature of the heuristic suggest a malicious intent, possibly for SEO manipulation or to distribute further malicious content. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body was heavily corrupted, limiting further analysis.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9906

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/7da8da3da0da7da9/The-Middle-Class-Gentleman-by-Moli-re.pdf
    • http://seasasac.lflinkup.com/5da0da8da3da5da5/A-Piece-of-the-Action-How-the-Middle-Class-Joined-the-Money-Class-by-Joe-Nocera.pdf
    • http://seasasac.lflinkup.com/8da0da4da0da4da6/Daddy-What-s-the-Middle-Class-by-Pat-LaMarche.pdf
    • http://seasasac.lflinkup.com/4da2da3da7da8da9/The-Great-Indian-Middle-Class-by-Pavan-K-Varma.pdf
    • http://seasasac.lflinkup.com/2da1da8da8da4/Fear-of-Falling-The-Inner-Life-of-the-Middle-Class-by-Barbara-Ehrenreich.pdf
    • http://seasasac.lflinkup.com/1da1da0da7da1da8da8/Postindustrial-Peasants-The-Illusion-of-Middle-Class-Prosperity-by-Kevin-T-Leicht.pdf
    • http://seasasac.lflinkup.com/1da8da9da5da3da8/The-Servant-Economy-Where-America-s-Elite-is-Sending-the-Middle-Class-by-Geoffrey-P-Faux.pdf
    • http://seasasac.lflinkup.com/9da7da4da1da2da1/Schnitzler-s-Century-The-Making-of-Middle-Class-Culture-1815-1914-by-Peter-Gay.pdf
    • http://seasasac.lflinkup.com/6da6da8da1da4da4/The-Crisis-of-the-Middle-Class-Constitution-Why-Economic-Inequality-Threatens-Our-Republic-by-Ganesh-Sitaraman.pdf
    • http://seasasac.lflinkup.com/9da5da8da2da6/The-Party-Is-Over-How-Republicans-Went-Crazy-Democrats-Became-Useless-and-the-Middle-Class-Got-Shafted-by-Mike-Lofgren.pdf
    • http://seasasac.lflinkup.com/5da0da8da2da2da2/Art-and-the-Victorian-Middle-Class-Money-and-the-Making-of-Cultural-Identity-by-Dianne-Sachko-Macleod.pdf
    • http://seasasac.lflinkup.com/4da8da5da8da8da7/Making-the-Australian-Male-Middle-Class-Masculinity-1870-1920-by-Martin-Crotty.pdf
    • http://seasasac.lflinkup.com/4da6da9da1da9da8/Inventing-Home-Emigration-Gender-and-the-Middle-Class-in-Lebanon-1870-1920-by-Akram-F-Khater.pdf
    • http://seasasac.lflinkup.com/4da6da0da8da7da1/Inventing-Home-Emigration-Gender-and-the-Middle-Class-in-Lebanon-1870-1920-by-Akram-F-Khater.pdf
    • http://seasasac.lflinkup.com/1da8da9da2da4da7/Winner-Take-All-Politics-How-Washington-Made-the-Rich-Richer--and-Turned-Its-Back-on-the-Middle-Class-by-Jacob-S-Hacker.pdf
    • http://seasasac.lflinkup.com/8da2da8da0da9da9/Civilising-Mission-and-the-English-Middle-Class-1792-1850-The-Heathen-at-Home-and-Overseas-by-Alison-Dr-Twells.pdf
    • http://seasasac.lflinkup.com/4da3da2da5da0/Rich-Dad-s-Guide-to-Investing-What-the-Rich-Invest-in-That-the-Poor-and-Middle-Class-Do-Not-by-Robert-T-Kiyosaki.pdf
    • http://seasasac.lflinkup.com/6da1da6da5da9da3/Human-Development-from-Middle-Childhood-to-Middle-Adulthood-Growing-Up-to-Be-Middle-Aged-by-Lea-Pulkkinen.pdf
    • http://seasasac.lflinkup.com/1da4da5da8da0da4/A-Gentleman-s-Memoir-A-Gentleman-s-3-by-A-J-Linn.pdf
    • http://seasasac.lflinkup.com/5da0da3da8da0da3/Dream-Class-How-to-Transform-Any-Group-of-Students-Into-the-Class-You-ve-Always-Wanted-by-Michael-Linsin.pdf
    • http://seasasac.lflinkup.com/6da6da8da1da4da4/The-Crisis-of-the-Middle-Class-Constitution-Why-Economic-Inequality-

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