Malicious PDF — malware analysis report

Static analysis result for SHA-256 363f12138464ce2d…

MALICIOUS

PDF

21.4 KB Created: 2019-11-08 00:29:43 +00:00 Authoring application: mPDF 5.7
MD5: e4cc20b5b3cec5fe22ff436524d267fe SHA-1: aa7ff7e70ea018e132d4d9ac8a7bd7b3f2d87e97 SHA-256: 363f12138464ce2d44ea459416741433a15af55eb39010aed96c2cd55b389bb4
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, a technique often used for SEO poisoning or to drive traffic to malicious sites. The ML classifier also flagged this sample with high confidence. While the specific URLs extracted were classified as benign, the overall structure and heuristic firings strongly suggest a malicious intent to redirect users. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/4739731736738732/The-Oxford-Anthology-of-English-Poetry-Vol-2-Blake-to-Heaney-by-John-Wain.pdf
    • http://cefasfese.4pu.com/4730738737739733/Puna-Wai-Korero-An-Anthology-of-Maori-Poetry-in-English-by-Reina-Whaitiri.pdf
    • http://cefasfese.4pu.com/1736738734731733/The-Oxford-Book-of-English-Love-Stories-by-John-Sutherland.pdf
    • http://cefasfese.4pu.com/6737734734735732/Crediting-Poetry-The-Nobel-Lecture-by-Seamus-Heaney.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/2731737739736/Poetry-of-Mourning-The-Modern-Elegy-from-Hardy-to-Heaney-by-Jahan-Ramazani.pdf
    • http://cefasfese.4pu.com/1731730732736739732/English-Renaissance-Poetry-A-Collection-of-Shorter-Poems-from-Skelton-to-Jonson-by-John-Williams.pdf
    • http://cefasfese.4pu.com/4731733735733733/Twenty-Gems-of-German-Lyric-Poetry-With-New-Translations-and-Adaptations-in-English-Verse-by-John-Tidball.pdf
    • http://cefasfese.4pu.com/8737737737730/Samuel-Johnson-by-John-Wain.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/2737735738730731/The-Oxford-Dictionary-of-English-Etymology-by-C-T-Onions.pdf
    • http://cefasfese.4pu.com/4738733736737736/The-Oxford-Book-of-English-Ghost-Stories-by-Michael-Cox.pdf
    • http://cefasfese.4pu.com/1731737730731736734/The-Making-of-the-Oxford-English-Dictionary-by-Peter-Gilliver.pdf
    • http://cefasfese.4pu.com/6739738739739731/Oxford-Picture-Dictionary-of-American-English-by-Patricia-E-Zevin.pdf
    • http://cefasfese.4pu.com/2733738732730732/The-Meaning-of-Everything-The-Story-of-the-Oxford-English-Dictionary-by-Simon-Winchester.pdf
    • http://cefasfese.4pu.com/6739738739736733/Oxford-Picture-Dictionary-of-American-English-Beginner-s-Workbook-by-Patricia-E-Zevin.pdf
    • http://cefasfese.4pu.com/3734734739737/The-Complete-Poetry-and-Prose-by-William-Blake.pdf
    • http://cefasfese.4pu.com/2735737732732736/The-Compact-Edition-of-the-Oxford-English-Dictionary-2-Vols-w-Reading-Glass-by-Herbert-Coleridge.pdf
    • http://cefasfese.4pu.com/1730731733736735736/American-War-Poetry-An-Anthology-by-Lorrie-Goldensohn.pdf
    • http://cefasfese.4pu.com/4735739732735737/An-Anthology-of-Modern-Irish-Poetry-by-Wes-Davis.pdf
    • http://cefasfese.4pu.com/473173373573