Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab49c7f7a6c10836…

MALICIOUS

PDF

19.3 KB Created: 2019-05-02 05:28:04 +01:00 Authoring application: mPDF 5.7
MD5: f27ce5d7db3785d2305fe47ad092cbb5 SHA-1: afb488532013d223471c4440faaf375e45dd4e24 SHA-256: ab49c7f7a6c10836f42aaba61d829c8df4cdfad451e488e21069f0877c57a2e6
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, which is a common technique for distributing malicious content or leading users to phishing sites. While the ML classifier strongly indicates maliciousness, the specific intent beyond link farming is unclear as no scripts were extracted and the document body is corrupted. The dominant host for these links is xiixmcuin.linkpc.net.

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/8206204209200204/Ziua-n-care-a-nins-by-Ezra-Jack-Keats.pdf
    • http://xiixmcuin.linkpc.net/9206202204203/Hi-Cat-by-Ezra-Jack-Keats.pdf
    • http://xiixmcuin.linkpc.net/3201202208201206/Apt-3-by-Ezra-Jack-Keats.pdf
    • http://xiixmcuin.linkpc.net/4201207205200207/Jennie-s-Hat-by-Ezra-Jack-Keats.pdf
    • http://xiixmcuin.linkpc.net/8206202206202206/The-Snowy-Day-PB-CD-by-Ezra-Jack-Keats.pdf
    • http://xiixmcuin.linkpc.net/9201207201200204/Ziua-in-care-a-fugit-somnul-by-Victoria-Patrascu.pdf
    • http://xiixmcuin.linkpc.net/8207203200209208/THE-COMPLETE-POETICAL-WORKS-OF-JOHN-KEATS-Ode-on-a-Grecian-Urn-Ode-to-a-Nightingale-Hyperion-Endymion-The-Eve-of-St-Agnes-Isabella-Ode-to-Psyche-Lamia-Sonnets-by-John-Keats.pdf
    • http://xiixmcuin.linkpc.net/1201206203207205200/Poems-of-Keats-Endymion-The-Volume-of-1820-and-other-poems-by-John-Keats.pdf
    • http://xiixmcuin.linkpc.net/8203202209201201/The-Complete-Poetical-Works-of-John-Keats-by-John-Keats.pdf
    • http://xiixmcuin.linkpc.net/1201206203203205203/A-Labor-of-Love-The-1946-European-Mission-of-Ezra-Taft-Benson-by-Ezra-Taft-Benson.pdf
    • http://xiixmcuin.linkpc.net/8200203204205207/Cancer-Care-in-Countries-and-Societies-in-Transition-Individualized-Care-in-Focus-by-Michael-Silbermann.pdf
    • http://xiixmcuin.linkpc.net/5208208202209203/Puppy-Intensive-Care-A-Breeder-s-Guide-to-Care-of-Newborn-Puppies-by-Myra-Savant-harris.pdf
    • http://xiixmcuin.linkpc.net/8203204207209205/The-Best-Care-Possible-A-Physician-s-Quest-to-Transform-Care-Through-the-End-of-Life-by-Ira-Byock.pdf
    • http://xiixmcuin.linkpc.net/8204203207204207/Porcelaine-Guide-Porcelaine-Guide-Includes-Porcelaine-Training-Diet-Socializing-Care-Grooming-Breeding-and-More-by-Jack-Murray.pdf
    • http://xiixmcuin.linkpc.net/5204201203202206/Journey-to-the-Fatherless-Preparing-for-the-Journey-of-Adoption-Orphan-Care-Foster-Care-and-Humanitarian-Relief-for-Vulnerable-Children-by-Lawrence-E-Bergeron.pdf
    • http://xiixmcuin.linkpc.net/4207200205205200/John-Keats-by-John-Keats.pdf
    • http://xiixmcuin.linkpc.net/1208202207201202/Ode-on-Melancholy-by-John-Keats.pdf
    • http://xiixmcuin.linkpc.net/6200206201201/The-Complete-Poems-by-John-Keats.pdf
    • http://xiixmcuin.linkpc.net/1200204206204205/Selected-Letters-by-John-Keats.pdf
    • http://xiixmcuin.linkpc.net/1201206203206200209/Lamia-and-Endymion-by-John-Keats.pdf
    • http://xiixmcuin.linkpc.net/1201206203203205203/A-Labor-of-Love-The-1946-European-Mission-of-Ezra-Taft-Benso

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