Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef3a6afc1182450c…

MALICIOUS

PDF

23.1 KB Created: 2019-05-03 15:30:45 +01:00 Authoring application: mPDF 5.7
MD5: b93fedfb4dc88e8cc3f33417c83f01b2 SHA-1: 22a277b6e78b2583e20512023f5f2f5442a6a8b9 SHA-256: ef3a6afc1182450c414c2771d7b3bb7740acea548a535b41ac91e77cd7616a88
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier also flagged this PDF as malicious. While the document body is heavily obfuscated, the presence of numerous links suggests an attempt to redirect users to potentially harmful content, likely for phishing or malware distribution. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9901

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/5200207202205201/Presidential-Term-Limits-in-American-History-Power-Principles-and-Politics-by-Michael-J-Korzi.pdf
    • http://xiixmcuin.linkpc.net/1208207207202203/Iraq-Vietnam-and-the-Limits-of-American-Power-by-Robert-K-Brigham.pdf
    • http://xiixmcuin.linkpc.net/3200204204203203/Inside-Game-Race-Power-and-Politics-In-the-NBA-Ohio-History-and-Culture-by-Wayne-Embry.pdf
    • http://xiixmcuin.linkpc.net/1205207200209209/Congress-Buys-a-Navy-Politics-Economics-and-the-Rise-of-American-Naval-Power-1881-1921-by-Paul-E-Pedisich.pdf
    • http://xiixmcuin.linkpc.net/5200207202205204/The-Politics-of-Presidential-Appointments-Political-Control-and-Bureaucratic-Performance-by-David-E-Lewis.pdf
    • http://xiixmcuin.linkpc.net/4200205207208/Liberal-Fascism-The-Secret-History-of-the-American-Left-from-Mussolini-to-the-Politics-of-Meaning-by-Jonah-Goldberg.pdf
    • http://xiixmcuin.linkpc.net/8200207203203202/Free-Books-For-Lovers-of-American-History-Over-300-Free-Downloadable-American-History-Books-For-You-to-Enjoy-Free-Books-for-a-Quick-Download-Book-5-by-Michael-Caputo.pdf
    • http://xiixmcuin.linkpc.net/9203207205204201/Rivals-For-Power-Presidential-Congressional-Relations-by-James-A-Thurber.pdf
    • http://xiixmcuin.linkpc.net/1201200207204206208/The-Challenge-Hamdan-v-Rumsfeld-and-the-Fight-Over-Presidential-Power-by-Jonathan-Mahler.pdf
    • http://xiixmcuin.linkpc.net/2207205204201203/Lies-the-Government-Told-You-Myth-Power-and-Deception-in-American-History-by-Andrew-P-Napolitano.pdf
    • http://xiixmcuin.linkpc.net/2203209203209202/Digging-Up-the-Dead-A-History-of-Notable-American-Reburials-by-Michael-Kammen.pdf
    • http://xiixmcuin.linkpc.net/2207204204200200/The-Good-Citizen-A-History-of-American-Civic-Life-by-Michael-Schudson.pdf
    • http://xiixmcuin.linkpc.net/4208204207208/The-Power-of-Limits-Proportional-Harmonies-in-Nature-Art-and-Architecture-by-Gy-rgy-Doczi.pdf
    • http://xiixmcuin.linkpc.net/3208206204207204/Medical-Crisis-Counseling-Short-Term-Therapy-for-Long-Term-Illness-by-Irene-Pollin.pdf
    • http://xiixmcuin.linkpc.net/5201201208201201/The-Limits-of-Power-Great-Fires-and-the-Process-of-City-Growth-in-America-by-Christine-Meisner-Rosen.pdf
    • http://xiixmcuin.linkpc.net/3200204204201206/No-Limits-The-Will-to-Succeed-by-Michael-Phelps.pdf
    • http://xiixmcuin.linkpc.net/1200202208204200/What-Money-Can-t-Buy-The-Moral-Limits-of-Markets-by-Michael-J-Sandel.pdf
    • http://xiixmcuin.linkpc.net/4207204208205203/The-Edge-of-Evolution-The-Search-for-the-Limits-of-Darwinism-by-Michael-J-Behe.pdf
    • http://xiixmcuin.linkpc.net/7204209204207200/Stretching-Limits-Exploring-Limits-2-by-Nicki-Bennett.pdf
    • http://xiixmcuin.linkpc.net/3204204207202201/Black-Power-The-Politics-of-Liberation-by-Stokely-Carmichael.pdf
    • http://xiixmcuin.linkpc.net/1205207200209209/Congress-Buys-a-Navy-Politics-Economics-and-the-Rise-of-American-Naval-Power-1

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