Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bae070670f2cb29…

MALICIOUS

PDF

19.7 KB Created: 2019-05-18 12:12:05 +01:00 Authoring application: mPDF 5.7
MD5: bb32246d2122b76d3a5fa26fd67fc2c1 SHA-1: 80ff31aca992f8402fe7c26d9bda374005383baa SHA-256: 1bae070670f2cb297bc195f0e395806794c6fe417b44bb965723c9798db41051
90 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for containing a mass external link farm, with 26 links identified. The ML classifier also strongly indicated maliciousness. While the extracted URLs themselves are currently classified as benign, the sheer volume and the nature of the PDF structure suggest a malicious intent, likely to direct users to harmful content or exploit vulnerabilities through these links. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://zacdsa.linkpc.net/2c55c59c51c54c55/It-s-Nothing-Personal-by-Kate-O-39-Reilly.pdf
    • http://zacdsa.linkpc.net/1c51c51c56c51c50c51/The-Sam-Reilly-Collection-Sam-Reilly-1-3-by-Christopher-Cartwright.pdf
    • http://zacdsa.linkpc.net/6c58c50c57c53c50/Personal-Illuminations-Enumeration-Personal-Illuminations-Personal-Illuminations-Volume-3-by-James-C-Christensen.pdf
    • http://zacdsa.linkpc.net/7c52c53c50c59c59/FAB-The-Coming-Revolution-on-Your-Desktop-from-Personal-Computers-to-Personal-Fabrication-by-Neil-Gershenfeld.pdf
    • http://zacdsa.linkpc.net/6c50c53c50c54c56/Regan-O-Reilly-PI-Comes-Home-Regan-O-Reilly-3-by-Margaret-Lake.pdf
    • http://zacdsa.linkpc.net/1c56c55c53/Killing-Reagan-The-Violent-Assault-That-Changed-a-Presidency-Bill-O-Reilly-s-Killing-Series-by-Bill-O-39-Reilly.pdf
    • http://zacdsa.linkpc.net/4c52c59c55c53c55/Our-Kate-Catherine-Cookson-Her-Personal-Story-by-Catherine-Cookson.pdf
    • http://zacdsa.linkpc.net/4c59c55c52c52c59/Strictly-Personal-Personal-3-5-by-K-C-Wells.pdf
    • http://zacdsa.linkpc.net/4c54c52c56c58c59/Interpreting-Women-s-Lives-Feminist-Theory-and-Personal-Narratives-by-Personal-Narratives-Group.pdf
    • http://zacdsa.linkpc.net/8c54c51c53c51/Works-by-Kate-Chopin-Novels-by-Kate-Chopin-Short-Stories-by-Kate-Chopin-Desiree-s-Baby-the-Awakening-the-Storm-the-Story-of-an-Hour-by-Books-LLC.pdf
    • http://zacdsa.linkpc.net/2c59c56c53c52c59/Miracle-Boy-Mike-Reilly-by-Mike-Reilly.pdf
    • http://zacdsa.linkpc.net/4c56c59c51c57c54/Personal-Changes-Personal-2-by-K-C-Wells.pdf
    • http://zacdsa.linkpc.net/4c59c55c51c57c59/Doctor-Kate-Angel-on-Snowshoes-The-Story-of-Kate-Pelham-Newcomb-by-Adele-Comandini.pdf
    • http://zacdsa.linkpc.net/1c51c51c57c53c51c57/Kate-Kate-and-the-Bizzy-Girls-The-Queen-by-Deborah-Kanafani.pdf
    • http://zacdsa.linkpc.net/3c58c58c59c52c58/Kate-s-Dilemma-Kate-s-Case-Files-3-by-Sarah-Holman.pdf
    • http://zacdsa.linkpc.net/1c51c51c57c53c51c56/Kate-kate-The-Fashion-Plate-by-Deborah-Kanafani.pdf
    • http://zacdsa.linkpc.net/1c59c58c54c58c59/Kissing-Kate-Amber-Kate-1-by-Via-Love.pdf
    • http://zacdsa.linkpc.net/3c52c52c56c55c58/8th-Round-by-T-C-O-39-Reilly.pdf
    • http://zacdsa.linkpc.net/7c59c52c53c52/The-Wish-List-by-Martina-Reilly.pdf
    • http://zacdsa.linkpc.net/4c53c53c53c56c52/Shanks-for-Nothing-by-Rick-Reilly.pdf
    • http://zacdsa.linkpc.net/4c52c59c55c53c55/Our-Kate-Catherine-Cookson-Her-Personal-Story-by-Catherine-Co