Malicious PDF — malware analysis report

Static analysis result for SHA-256 43e87df809c4a6f0…

MALICIOUS

PDF

32.0 KB Created: 2019-04-30 02:23:19 +01:00 Authoring application: mPDF 5.7
MD5: f674cd34c56b55e08a2a3e6071e5214a SHA-1: dc697254264e45cf07f763e5110c2e74449c3f29 SHA-256: 43e87df809c4a6f0bf09c4e49a3fc10c1824a3cdeef1da8db7ca796ef47fc871
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. While many of these URLs were marked as benign, the sheer volume and the nature of the heuristic suggest a malicious intent, possibly for SEO poisoning or to lure users to malicious sites. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9915

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://xiixmcuin.linkpc.net/5208203204202208/Web-Information-Systems-Engineering---WISE-2007-8th-International-Conference-on-Web-Information-Systems-Engineering-Nancy-France-December-3-7-2007-Proceedings-by-Boualem-Benatallah.pdf
    • http://xiixmcuin.linkpc.net/7201206206202207/Intelligent-Information-Systems-2001-Proceedings-of-the-International-Symposium-Intelligent-Information-Systems-X-June-18-22-2001-Zakopane-Poland-by-M-A-Kopotek.pdf
    • http://xiixmcuin.linkpc.net/1201203207205203202/Strategic-Information-Management-Challenges-and-Strategies-in-Managing-Information-Systems-by-R-D-Galliers.pdf
    • http://xiixmcuin.linkpc.net/8201204203200201/Materials-Manufacturing-Technology-Electronics-and-Information-Science---Proceedings-of-the-2015-International-Workshop-Mmtei2015-Proceedings-of-the-2015-International-Workshop-on-Materials-Manufacturing-Technology-Electronics-and-Information-Scien-by-Xiaolong-Li.pdf
    • http://xiixmcuin.linkpc.net/7209209203209207/Data-Mining-for-Design-and-Manufacturing-Methods-and-Applications-by-Dan-Braha.pdf
    • http://xiixmcuin.linkpc.net/1201209202202202204/Manufacturing-Planning-And-Control-Systems-by-Thomas-E-Vollmann.pdf
    • http://xiixmcuin.linkpc.net/1201206201201204203/Computer-Control-of-Manufacturing-Systems-by-Yoram-Koren.pdf
    • http://xiixmcuin.linkpc.net/8201204203200200/Materials-Manufacturing-Technology-Electronics-and-Information-Science---Proceedings-of-the-2015-International-Workshop-Mmtei2015-by-Xiaolong-Li.pdf
    • http://xiixmcuin.linkpc.net/1200208201205203202/The-Way-We-Were-Book-Images-Anecdotes-Technical-Information-and-History-Data-by-George-Forss.pdf
    • http://xiixmcuin.linkpc.net/1201202206209205209/Advanced-Manufacruting-Systems-Proceedings-3v-International-Conference-on-Manufacturing-Science-and-Engineering-2011-Guilin-China-by-Daoguo-Yang.pdf
    • http://xiixmcuin.linkpc.net/8203207201202201/Innovations-Developments-and-Applications-of-Semantic-Web-and-Information-Systems-by-Miltiadis-D-Lytras.pdf
    • http://xiixmcuin.linkpc.net/7205203209202205/The-Wall-Street-Journal-Guide-to-Information-Graphics-The-Dos-and-Don-ts-of-Presenting-Data-Facts-and-Figures-by-Dona-M-Wong.pdf
    • http://xiixmcuin.linkpc.net/1200208205206208202/The-Architecture-of-Computer-Hardware-and-Systems-Software-An-Information-Technology-Approach-by-Irv-Englander.pdf
    • http://xiixmcuin.linkpc.net/7201203203206202/The-Japanese-Stock-Market-Pricing-Systems-and-Accounting-Information-by-Shigeki-Sakakibara.pdf
    • http://xiixmcuin.linkpc.net/8202207209200205/Putting-the-Sparkle-in-the-Knowledge-Society-7th-International-Conference-on-Current-Research-Information-Systems-by-A-Nase.pdf
    • http://xiixmcuin.linkpc.net/1200203207201209205/Understanding-Digital-Libraries-The-Morgan-Kaufmann-Series-in-Multimedia-and-Information-Systems-by-Michael-Lesk.pdf
    • http://xiixmcuin.linkpc.net/1201202200202200205/Big-Data-Little-Data-No-Data-Scholarship-in-the-Networked-World-by-Christine-L-Borgman.pdf
    • http://xiixmcuin.linkpc.net/5200209203204203/ICL-A-Business-and-Technical-History-The-Official-History-of-Britain-s-Leading-Information-Systems-Company-by-Martin-Campbell-Kelly.pdf
    • http://xiixmcuin.linkpc.net/9207208207201209/Building-Winning-Algorithmic-Trading-Systems-A-Trader-s-Journey-From-Data-Mining-to-Monte-Carlo-Simulation-to-Live-Trading-by-Kevin-Davey.pdf
    • http://xiixmcuin.linkpc.net/5203208201202203/Data-and-Power-Big-Data-and-Corporate-Control-in-Modern-America-by-Liam-McCarty.pdf
    • http://xiixmcuin.linkpc.net/8201204203200201/Materials-Manufacturing-Technology-Electronics-and-Informa

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