Malicious PDF — malware analysis report

Static analysis result for SHA-256 769a7b554e2e173a…

MALICIOUS

PDF

21.3 KB Created: 2019-06-04 10:03:31 +01:00 Authoring application: mPDF 5.7
MD5: 6ea5565aea98ed4a204521b0c7e53504 SHA-1: b20e8bfd255c300ad3e3b28c967d52253edef65f SHA-256: 769a7b554e2e173a545a50fe3fdc26a1b65991e1d150e3e675d3ccc5832aced9
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a link farm. While the ML classifier flagged it as malicious, the specific URLs extracted are currently classified as benign. The primary attack pattern appears to be the distribution of these links, potentially for SEO manipulation or to redirect users to malicious content hosted elsewhere. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9437

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/1731731731739737739/STOKED-WORDS-An-anthology-of-Queer-Poetry-from-the-Capturing-Fire-Slam-amp-Summit-by-Regie-Cabico.pdf
    • http://cefasfese.4pu.com/1731731731739738730/A-Capitalist-Meltdown-of-the-Global-Kind-by-Regie-Cabico.pdf
    • http://cefasfese.4pu.com/4735739738739734/The-Ring-Of-Words-An-Anthology-Of-Poetry-For-Children-by-Roger-McGough.pdf
    • http://cefasfese.4pu.com/1731731731738732730/Kids-Poems-2nd-Grade-Teaching-Second-Graders-to-Love-Writing-Poetry-by-Regie-Routman-Feb-1-2000-by-Regie-Routman.pdf
    • http://cefasfese.4pu.com/1738733732737/No-Sign-of-Ceasefire-An-Anthology-of-Contemporary-Israeli-Poetry-An-Anthology-of-Contemporary-Israeli-Poetry-by-Warren-Bargad.pdf
    • http://cefasfese.4pu.com/1730733738731734733/Der-sch-leraktivierende-Umgang-mit-Gegenwartslyrik-am-Beispiel-von-Slam-Poetry-by-Antje-Minde.pdf
    • http://cefasfese.4pu.com/1731731731737736730/Kids-Poems-Kindergarten-Teaching-Kindergartners-to-Love-Writing-Poetry-by-Regie-Routman.pdf
    • http://cefasfese.4pu.com/1731734735735739737/Du-gehst-zum-Poetry-Slam-eine-Sammlung-von-Gedichten-by-Elisabeth-Noemi-Kaiser.pdf
    • http://cefasfese.4pu.com/4739735735735730/A-Boom-in-the-Room-an-Anthology-of-Student-Poetry-Student-Poetry-Anthologies-Book-1-by-Annie-Douglass-Lima.pdf
    • http://cefasfese.4pu.com/4732733730732736/Revolutionary-Voices-A-Multicultural-Queer-Youth-Anthology-by-Amy-Sonnie.pdf
    • http://cefasfese.4pu.com/1731736738733730/The-Future-is-Queer-A-Science-Fiction-Anthology-by-Richard-Labont-.pdf
    • http://cefasfese.4pu.com/7734737733739/Summit-of-Passion-Stone-Summit-3-The-Springs-7-by-Elena-Aitken.pdf
    • http://cefasfese.4pu.com/1731731736736739733/Capturing-Her-Heart-Capturing-the-Crown-4-by-Nina-Bruhns.pdf
    • http://cefasfese.4pu.com/4735738734731737/A-Thousand-Words-of-Poetry-by-Shelagh-Watkins.pdf
    • http://cefasfese.4pu.com/1731735737739734737/The-Poetry-Of-Surrealism-An-Anthology-by-Michael-Benedikt.pdf
    • http://cefasfese.4pu.com/4735739732735737/An-Anthology-of-Modern-Irish-Poetry-by-Wes-Davis.pdf
    • http://cefasfese.4pu.com/1730731733736735736/American-War-Poetry-An-Anthology-by-Lorrie-Goldensohn.pdf
    • http://cefasfese.4pu.com/4738734731737736/The-Jazz-Poetry-Anthology-by-Sascha-Feinstein.pdf
    • http://cefasfese.4pu.com/4730739739737732/The-Rag-and-Bone-Shop-of-the-Heart-A-Poetry-Anthology-by-Robert-Bly.pdf
    • http://cefasfese.4pu.com/4733730730736737/Poetry-After-9-11-An-Anthology-of-New-York-Poets-by-Dennis-Loy-Johnson.pdf