Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8fc1fd042f9e301…

MALICIOUS

PDF

26.4 KB Created: 2019-05-02 02:48:32 +01:00 Authoring application: mPDF 5.7
MD5: b92112b91bf79a645417f0dc24759ada SHA-1: 4cfa7a678d76e37497df907f7507abbc81eb8104 SHA-256: c8fc1fd042f9e30131f43cd4d93f656bd9f56ab726652788647a8a67a8f049e2
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs, identified as a link farm. The ML classifier also flagged this PDF as malicious. The primary attack pattern appears to be SEO poisoning or directing users to potentially malicious content hosted on the numerous external domains. No scripts were extracted, and the document body was unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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/5209200206207206/A-Portrait-of-the-Artist-as-a-Young-Man-1916-by-James-Joyce-A-Portrait-of-the-Artist-as-a-Young-Man-Is-a-Coming-of-Age-Tale-by-James-Joyce-First-Serialized-in-the-Egoist-Between-1914-1915-and-Published-in-Book-Form-in-1916-by-James-Joyce.pdf
    • http://xiixmcuin.linkpc.net/7207205204201203/Dubliners-1917-by-James-Joyce-Collection-of-15-Short-Stories-Include-A-Portrait-of-the-Artist-as-a-Young-Man-1916-Novel-By-James-Joyce-Represents-the-Transitional-Stage-Between-the-Realism-of-Joyce-s-by-James-Joyce.pdf
    • http://xiixmcuin.linkpc.net/9209208205206200/A-Portrait-of-Artist-as-a-Young-Man-by-James-Joyce.pdf
    • http://xiixmcuin.linkpc.net/1200205201202209/Dubliners-A-Portrait-of-the-Artist-As-a-Young-Man-Chamber-Music-by-James-Joyce.pdf
    • http://xiixmcuin.linkpc.net/1200204206202205205/A-Portrait-of-the-Artist-as-a-Young-Man-Text-Criticism-amp-Notes-by-James-Joyce.pdf
    • http://xiixmcuin.linkpc.net/7207201201207206/A-Portrait-of-the-Artist-as-a-Young-Man-illustrated-Deluxe-Edition-by-James-Joyce.pdf
    • http://xiixmcuin.linkpc.net/1200204201209208203/A-Portrait-of-the-Artist-as-a-Young-Man-illustrated-edition-3-FREE-EBOOKS-by-James-Joyce.pdf
    • http://xiixmcuin.linkpc.net/8205201200202205/A-Portrait-of-the-Artist-as-a-Young-Man---Unabridged-Version---Wine-Glasses---ANNOTATED-by-James-Joyce.pdf
    • http://xiixmcuin.linkpc.net/6200201201204209/A-Portrait-Of-The-Artist-As-A-Young-Man-FREE-Treasure-Island-By-Robert-Louis-Stevenson-JBS-Classics---100-Formatted-Illustrated-by-James-Joyce.pdf
    • http://xiixmcuin.linkpc.net/4204203204207200/Breakdowns-Portrait-of-the-Artist-as-a-Young-amp-by-Art-Spiegelman.pdf
    • http://xiixmcuin.linkpc.net/5204203203205204/Portrait-of-the-Artist-as-a-Young-Ape-A-Caprice-by-Michel-Butor.pdf
    • http://xiixmcuin.linkpc.net/5200207205201208/James-Joyce-Portrait-of-a-Dubliner-A-Graphic-Biography-by-Alfonso-Zapico.pdf
    • http://xiixmcuin.linkpc.net/9208205202209207/Dubliners-by-James-Joyce-Illustrated-Delphi-Parts-Edition-James-Joyce-by-James-Joyce.pdf
    • http://xiixmcuin.linkpc.net/6203206203201200/Ulysses-by-James-Joyce-With-a-foreword-by-Morris-L-Ernst-And-the-Decision-of-the-United-States-District-Court-Rendered-by-Judge-John-M-Woolsey-by-James-Joyce.pdf
    • http://xiixmcuin.linkpc.net/3203200200204203/Portrait-of-an-Artist-A-Biography-of-Georgia-O-Keeffe-by-Laurie-Lisle.pdf
    • http://xiixmcuin.linkpc.net/5201203201208203/Portrait-of-the-Artist-as-a-Viable-Alternative-to-Death-by-Ross-McCleary.pdf
    • http://xiixmcuin.linkpc.net/7207203203206201/Dubliners-the-definitive-text-restoring-Joyce-s-manuscript-style-and-later-corrections-by-James-Joyce.pdf
    • http://xiixmcuin.linkpc.net/1201203203205201206/Leonardo-da-Vinci-500-Years-On-A-Portrait-of-the-Artist-Scientist-and-Innovator-by-Matthew-Landrus.pdf
    • http://xiixmcuin.linkpc.net/8206209208202205/Joyce-Wieland-Artist-on-Fire-by-Jane-Lind.pdf
    • http://xiixmcuin.linkpc.net/3209203200208208/Letters-to-a-Young-Artist-by-Peter-Nesbett.pdf
    • http://xiixmcuin.linkpc.net/1200205201202209/Dubliners-A-Portrait-of-the-Artist-As-a-Young-Man-Chamber

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