Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d8f12c9cf4bce0a…

MALICIOUS

PDF

23.2 KB Created: 2019-11-07 12:35:04 +00:00 Authoring application: mPDF 5.7
MD5: 192da064319bb3b17f47df3e1af64cfb SHA-1: 99e43584ddbd9cbb26240a4b240df424947659f9 SHA-256: 1d8f12c9cf4bce0ad83f21fb330e0ff8c09cf506a48a40af064ba1f5eacdc99e
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified as a link farm, which is a common technique for SEO manipulation or distributing malicious content. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were extracted, the sheer volume of links suggests a malicious intent to redirect users or manipulate search results. The primary attack pattern involves leveraging embedded links within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9776

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://cefasfese.4pu.com/3730736733736731/American-Miler-The-Life-and-Times-of-Glenn-Cunningham-by-Paul-J-Kiell.pdf
    • http://cefasfese.4pu.com/6730734738737739/Cunningham-s-Book-of-Shadows-The-Path-of-An-American-Traditionalist-by-Scott-Cunningham.pdf
    • http://cefasfese.4pu.com/5732736734739733/Existentialism-and-Excess-The-Life-and-Times-of-Jean-Paul-Sartre-by-Gary-Cox.pdf
    • http://cefasfese.4pu.com/3737731730733739/Delta-Blues-The-Life-and-Times-of-the-Mississippi-Masters-Who-Revolutionized-American-Music-by-Ted-Gioia.pdf
    • http://cefasfese.4pu.com/7732737730739/The-Man-Who-Never-Died-The-Life-Times-and-Legacy-of-Joe-Hill-American-Labor-Icon-by-William-M-Adler.pdf
    • http://cefasfese.4pu.com/8731738739731738/Craig-Claiborne-and-the-American-Food-Renaissance-The-Turbulent-Life-and-Fine-Times-of-the-Man-Who-Changed-the-Way-We-Eat-by-Thomas-McNamee.pdf
    • http://cefasfese.4pu.com/8736738738737/American-Rose-A-Nation-Laid-Bare-The-Life-and-Times-of-Gypsy-Rose-Lee-by-Karen-Abbott.pdf
    • http://cefasfese.4pu.com/6731737732736730/Metro-Goldwyn-Mayer-by-Paul--Cunningham.pdf
    • http://cefasfese.4pu.com/1731739731734737730/Masterpieces-of-the-American-West-Selections-from-the-Anschutz-Collection-by-Elizabeth-Cunningham.pdf
    • http://cefasfese.4pu.com/1733739731734735/American-Splendor-The-Life-and-Times-of-Harvey-Pekar-by-Harvey-Pekar.pdf
    • http://cefasfese.4pu.com/2732739736737733/The-Book-of-American-Heroes-by-Glenn-Beck.pdf
    • http://cefasfese.4pu.com/2732739736734739/Glenn-Beck-s-The-American-Crisis-by-To-Be-Announced.pdf
    • http://cefasfese.4pu.com/6730735730732731/Cunningham-s-Manual-of-Practical-Anatomy-Volume-I-Upper-and-Lower-Limbs-by-Daniel-John-Cunningham.pdf
    • http://cefasfese.4pu.com/2733731732733730/Jews-and-American-Comics-An-Illustrated-History-of-an-American-Art-Form-by-Paul-M-Buhle.pdf
    • http://cefasfese.4pu.com/6730734738736738/Cunningham-s-Encyclopedia-of-Wicca-in-the-Kitchen-by-Scott-Cunningham.pdf
    • http://cefasfese.4pu.com/5738737737735731/American-Vintage-The-Rise-of-American-Wine-by-Paul-Lukacs.pdf
    • http://cefasfese.4pu.com/9738737737738736/Der-Maulwurf-in-der-Schule-by-Zden-k-Miler.pdf
    • http://cefasfese.4pu.com/4739732736731/Sonny-Montes-and-Mexican-American-Activism-in-Oregon-by-Glenn-Anthony-May.pdf
    • http://cefasfese.4pu.com/6736735737733734/High-Noon-The-Hollywood-Blacklist-and-the-Making-of-an-American-Classic-by-Glenn-Frankel.pdf
    • http://cefasfese.4pu.com/6730735730737735/Whispers-of-the-Moon-The-Life-and-Work-of-Scott-Cunningham-by-David-B-Harrington.pdf