Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0c33fec96d72dbc…

MALICIOUS

PDF

13.9 KB Created: 2019-05-07 04:45:02 +01:00 Authoring application: mPDF 5.7
MD5: 0a92cf2ae740608a11f98382a7fcd2f4 SHA-1: 75716d143de5e3a4e8edafbb9bd987829d14fca7 SHA-256: d0c33fec96d72dbcd911266246ea4377cb57c5784d6f59cfdaf3c85564be848e
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, hosted on the domain xiixmcuin.linkpc.net. This behavior is indicative of a link farm or a distribution point for further malicious content. The ML classifier also flagged this PDF as malicious with a high score. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9102

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/3207202206202202/Poetic-Edda-Heroic-Poems-Edited-with-Translation-Introduction-and-Commentary-by-Ursula-Dronke-Volume-1-by-Ursula-Dronke.pdf
    • http://xiixmcuin.linkpc.net/8206202201209201/The-Unreal-and-the-Real-The-Selected-Short-Stories-of-Ursula-K-Le-Guin-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/8206202200203206/Dear-Genius-The-Letters-of-Ursula-Nordstrom-by-Ursula-Nordstrom.pdf
    • http://xiixmcuin.linkpc.net/2200204209200207/The-Little-Mermaid-Ursula-My-Side-of-the-Story-3-by-Daphne-Skinner.pdf
    • http://xiixmcuin.linkpc.net/3200207203203202/The-Tenant-A-Love-Story-by-Ursula-Maria-Mandel.pdf
    • http://xiixmcuin.linkpc.net/1200205209207209/Very-Far-Away-from-Anywhere-Else-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/7205200208200/Rex-by-Ursula-Dubosarsky.pdf
    • http://xiixmcuin.linkpc.net/3207203203202209/The-Other-Wind-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/4207207201205209/Erebos-by-Ursula-Poznanski.pdf
    • http://xiixmcuin.linkpc.net/2204206202209/The-Dispossessed-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/2206205201200/Lavinia-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/3201206207204209/Walking-by-Myself-by-Ursula-Dukes.pdf
    • http://xiixmcuin.linkpc.net/5200203208206201/The-Dispossessed-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/2207202206205209/The-Golden-Day-by-Ursula-Dubosarsky.pdf
    • http://xiixmcuin.linkpc.net/7202208204207207/Trompe-L-Oeil-Sky-and-Sea-by-E-Ursula.pdf
    • http://xiixmcuin.linkpc.net/2206208200200/The-Eye-of-the-Heron-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/2201208200208207/Malafrena-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/1204201205206204/The-Telling-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/1200202201201205/Ursula-Under-by-Ingrid-Hill.pdf
    • http://xiixmcuin.linkpc.net/3200206209206202/Stones-from-the-River-by-Ursula-Hegi.pdf

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