Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0ea427640c1cce9…

MALICIOUS

PDF

22.5 KB Created: 2019-06-05 06:16:56 +01:00 Authoring application: mPDF 5.7
MD5: 0c913135a5ded994364f5f32107c94d2 SHA-1: 28d492eacb669860b854a8e60d597f7d1f9f4de8 SHA-256: c0ea427640c1cce9590590208b1faa344f491feb6d2cfa78a0f46893f66e0313
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, which point to various external websites. The ML classifier also flagged this PDF as malicious. The primary attack pattern observed is the creation of a link farm designed to direct users to potentially harmful content, although the specific nature of that content is not detailed in the provided evidence.

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
    • http://cefasfese.4pu.com/1739737736738731/Letters-of-Stone-From-Nazi-Germany-to-South-Africa-by-Steven-Robins.pdf
    • http://cefasfese.4pu.com/2738731736739739/50-Children-One-Ordinary-American-Couple-s-Extraordinary-Rescue-Mission-into-the-Heart-of-Nazi-Germany-by-Steven-Pressman.pdf
    • http://cefasfese.4pu.com/4739732736739738/Germany-Jekyll-amp-Hyde-An-Eyewitness-Analysis-of-Nazi-Germany-by-Sebastian-Haffner.pdf
    • http://cefasfese.4pu.com/7734734735735732/Quest-Searching-for-Germany-s-Nazi-Past-by-Ib-Melchior.pdf
    • http://cefasfese.4pu.com/1731735730734739738/Love-and-Hate-In-Nazi-Germany-by-Ryan-Armstrong.pdf
    • http://cefasfese.4pu.com/6732735739736730/The-Social-Policy-of-Nazi-Germany-by-Claude-W-Guillebaud.pdf
    • http://cefasfese.4pu.com/1731735730735731739/Hitler-and-Nazi-Germany-A-History-by-Jackson-J-Spielvogel.pdf
    • http://cefasfese.4pu.com/1730730734731731736/Different-Drummers-Jazz-in-the-Culture-of-Nazi-Germany-by-Michael-H-Kater.pdf
    • http://cefasfese.4pu.com/1735734738730731/Destined-to-Witness-Growing-Up-Black-in-Nazi-Germany-by-Hans-J-Massaquoi.pdf
    • http://cefasfese.4pu.com/5735737731732/The-Rise-and-Fall-of-the-Third-Reich-A-History-of-Nazi-Germany-by-William-L-Shirer.pdf
    • http://cefasfese.4pu.com/3736739738737735/Masters-of-the-Air-America-s-Bomber-Boys-Who-Fought-the-Air-War-Against-Nazi-Germany-by-Donald-L-Miller.pdf
    • http://cefasfese.4pu.com/8735738737732738/Nazi-Germany-And-British-Guilt-Epilogue-The-German-Victory-by-Cecil-Genese.pdf
    • http://cefasfese.4pu.com/2733730731735/Nazi-Germany-and-the-Jews-The-Years-of-Extermination-1939-1945-by-Saul-Friedl-nder.pdf
    • http://cefasfese.4pu.com/4734736739733731/Victims-and-Neighbors-A-Small-Town-in-Nazi-Germany-Remembered-by-Frances-Henry.pdf
    • http://cefasfese.4pu.com/5730737733735736/Nazi-Germany-Canadian-Responses-Confronting-Antisemitism-in-the-Shadow-of-War-by-L-Ruth-Klein.pdf
    • http://cefasfese.4pu.com/3738734732735733/The-Second-Bailout-A-Personal-Memoir-of-Bombing-Missions-Over-Nazi-Germany-and-Life-as-a-POW-by-Cynthia-S-Price.pdf
    • http://cefasfese.4pu.com/9732738733731730/The-Trial-of-Adolf-Hitler-The-Beer-Hall-Putsch-and-the-Rise-of-Nazi-Germany-by-David-King.pdf
    • http://cefasfese.4pu.com/9732738732736731/The-Rise-of-Nazi-Germany-The-History-of-the-Events-that-Brought-Adolf-Hitler-to-Power-by-Charles-River-Editors.pdf
    • http://cefasfese.4pu.com/9739731738733735/This-Is-South-Africa-by-Peter-Borchert.pdf
    • http://cefasfese.4pu.com/1730738739738735733/Warwolves-of-the-Iron-Cross-Black-Wolf-White-Reich-An-Afro-German-Family-in-Nazi-Germany-Wehrwolf-Book-6-by-V-K-Clark.pdf