Malicious PDF — malware analysis report

Static analysis result for SHA-256 da5045ac44eac115…

MALICIOUS

PDF

15.3 KB Created: 2019-05-02 01:05:10 +01:00 Authoring application: mPDF 5.7
MD5: 56459e9470f725ac8f9736cf43aadbff SHA-1: 610e3c136e78df6c7b652e65a767bda0f9c4dd5a SHA-256: da5045ac44eac11517fc0d156953fb504de67691d9aecc85ea5df2718deb6ec4
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file contains a large number of embedded links to external PDF documents, all hosted on the same suspicious domain 'xiixmcuin.linkpc.net'. This behavior is indicative of a link farm or a redirection scheme designed to lead users to potentially malicious content. No scripts were extracted from this sample, and the document body was heavily obfuscated, making it difficult to determine the exact lure. However, the sheer volume of links suggests a broad, low-effort distribution tactic.

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/7209200209202201/P-Vector-Inverse-Method-by-Peter-C-Chu.pdf
    • http://xiixmcuin.linkpc.net/7209200208202206/Inverse-Problems-and-Inverse-Scattering-of-Plane-Waves-by-Roy-D-N-Ghosh.pdf
    • http://xiixmcuin.linkpc.net/1200205205205200200/Guitar-Method-1-With-2-CDs-by-Peter-Vogl.pdf
    • http://xiixmcuin.linkpc.net/1200205205207207209/Guitar-Method-Book-2-with-Audio-Access-by-Peter-Vogl.pdf
    • http://xiixmcuin.linkpc.net/1207209200203/Jimi-s-Book-of-Japanese-A-Motivating-Method-to-Learn-Japanese-by-Peter-X-Takahashi.pdf
    • http://xiixmcuin.linkpc.net/8203201207205204/For-and-Against-Method-Including-Lakatos-s-Lectures-on-Scientific-Method-and-the-Lakatos-Feyerabend-Correspondence-by-Imre-Lakatos.pdf
    • http://xiixmcuin.linkpc.net/7208202207200209/Vector-Analysis-by-Jack-C-Haldeman-II.pdf
    • http://xiixmcuin.linkpc.net/2208205208201203/The-Trudeau-Vector-by-Juris-Jurjevics.pdf
    • http://xiixmcuin.linkpc.net/2205203204206201/The-Chimera-Vector-The-Fifth-Column-1-by-Nathan-M-Farrugia.pdf
    • http://xiixmcuin.linkpc.net/3204200200207207/Star-Wars-Vector-Vol-2-by-John-Ostrander.pdf
    • http://xiixmcuin.linkpc.net/2204205209208204/Threat-Vector-Jack-Ryan-Jr-4-by-Tom-Clancy.pdf
    • http://xiixmcuin.linkpc.net/2208207208206207/Maat-Space-Portal-Vector-4-by-A-Phallus-Si.pdf
    • http://xiixmcuin.linkpc.net/7209200208205205/Inverse-Thoughts-by-Spencer.pdf
    • http://xiixmcuin.linkpc.net/9202200203208203/Schaum-s-Outline-of-Vector-Analysis-by-Murray-R-Spiegel.pdf
    • http://xiixmcuin.linkpc.net/7209200209202208/Inverse-Engineering-Handbook-by-Keith-A-Woodbury.pdf
    • http://xiixmcuin.linkpc.net/7209200209202207/Inverse-Sturm-Liouville-Problems-by-B-M-Levitan.pdf
    • http://xiixmcuin.linkpc.net/7209200208201205/Inverse-Problem-Theory-by-Albert-Tarantola.pdf
    • http://xiixmcuin.linkpc.net/7209200208202207/Inverse-Limits-From-Continua-to-Chaos-by-W-T-Ingram.pdf
    • http://xiixmcuin.linkpc.net/4202203206200209/DIV-Grad-Curl-and-All-That-An-Informal-Text-on-Vector-Calculus-by-Harry-M-Schey.pdf
    • http://xiixmcuin.linkpc.net/7209200207203206/Statistical-and-Computational-Inverse-Problems-by-Jari-Kaipio.pdf
    • http://xiixmcuin.linkpc.net/2205203204206201/The-Chimera-Vector-The-Fifth-Colum

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