Malicious PDF — malware analysis report

Static analysis result for SHA-256 076868e83104e282…

MALICIOUS

PDF

19.0 KB Created: 2019-04-30 02:33:44 +01:00 Authoring application: mPDF 5.7
MD5: b00948b38e52c24b967422442e320953 SHA-1: 99e581d742d89d8345ef5eee02edba60052c5ce2 SHA-256: 076868e83104e28277583e0fe720b95109861cb49dd9a129d10d6d24a4b94b62
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by a critical heuristic for containing a mass external PDF link farm, with numerous links pointing to a dynamic DNS domain. While the document body is heavily obfuscated, the embedded URLs suggest a large collection of PDF files are being linked, likely for SEO manipulation or to serve malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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/8203204202207207/Morceau-Symphonique-Solo-Trombone-and-Concert-Band-Conductor-Score-by-Alexandre-Guilmant.pdf
    • http://xiixmcuin.linkpc.net/8203204201206205/Morceau-de-Concert-Op-94-F-Horn-Feature-Score-amp-Parts-by-Camille-Saint-Sa-ns.pdf
    • http://xiixmcuin.linkpc.net/8203204202208201/Morceau-de-Concert-Opus-94-For-Horn-and-Piano-0-by-Camille-Saint-Sa-ns.pdf
    • http://xiixmcuin.linkpc.net/1200203209201206209/Best-of-Metallica-Trombone-12-Solo-Arrangements-With-CD-Audio-by-Scott-Seelig.pdf
    • http://xiixmcuin.linkpc.net/1200205204200205200/Sechs-Pr-ludien-und-Fugen-Opus-6-Piano-Orgel-oder-Cembalo-Solo-Partitur---Piano-Organ-or-Hapsichord-Solo-Score-Bisel-Classics-184-by-Johann-Georg-Albrechtsberger.pdf
    • http://xiixmcuin.linkpc.net/7201208209209207/Standard-of-Excellence-Book-1-Comprehensive-Band-Method-Book-1-Trombone-Bass-Clef-Standard-of-Excellence-Series-by-Bruce-Pearson.pdf
    • http://xiixmcuin.linkpc.net/9208205201209206/The-Three-Musketeers-by-Alexandre-Dumas-Illustrated-Delphi-Parts-Edition-Alexandre-Dumas-by-Alexandre-Dumas.pdf
    • http://xiixmcuin.linkpc.net/6201200206208200/The-Conductor-of-Illusions-by-Metin-Arditi.pdf
    • http://xiixmcuin.linkpc.net/1207201202209205/Sexcapades-Cynthia-and-the-Conductor-by-Jinni-Black.pdf
    • http://xiixmcuin.linkpc.net/8203205207202208/The-Score-The-Score-1-by-Kiki-Swinson.pdf
    • http://xiixmcuin.linkpc.net/4206202201205201/Band-Vs-Band-Comix-Volume-1-Band-Vs-Band-Comix-1-by-Kathleen-Jacques.pdf
    • http://xiixmcuin.linkpc.net/8204205209209205/Melodious-Etudes-for-Trombone-Book-1-by-Joannes-Rochut.pdf
    • http://xiixmcuin.linkpc.net/1200208202201200205/Fanfare-Brillante-for-Trombone-Quartet-Intermediate-by-Nathan-Farrell.pdf
    • http://xiixmcuin.linkpc.net/6203203207203202/The-Three-Musketeers-Inti-Classics-annotated-by-Alexandre-Dumas-p-re-by-Alexandre-Dumas.pdf
    • http://xiixmcuin.linkpc.net/8203204201205200/Le-Quatorzi-me-Morceau-by-Lalcandy-Collado.pdf
    • http://xiixmcuin.linkpc.net/8203204201204209/Mr-morceau-de-sucre-by-Zhue-Thao.pdf
    • http://xiixmcuin.linkpc.net/2207203206208200/In-Concert-by-Karin-Bishop.pdf
    • http://xiixmcuin.linkpc.net/1200204203203202204/Moses-Goes-to-a-Concert-by-Isaac-Millman.pdf
    • http://xiixmcuin.linkpc.net/1200206203205209/The-Last-Holiday-Concert-by-Andrew-Clements.pdf
    • http://xiixmcuin.linkpc.net/1201208201200201/Solo-A-Memoir-of-Hope-by-Hope-Solo.pdf

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