Malicious PDF — malware analysis report

Static analysis result for SHA-256 af50914a1d5f7a99…

MALICIOUS

PDF

16.3 KB Created: 2019-06-05 19:40:21 +01:00 Authoring application: mPDF 5.7
MD5: 1dab3d196c93c4b17d1fd6d2af4b9181 SHA-1: 8adb9457b676d4340fe7a5b6e9f9239a213dd805 SHA-256: af50914a1d5f7a996c7ac5267eac26dca2a6180f9898347d09905cfa60a865a8
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of embedded URLs, forming a link farm. The heuristic PDF_SEO_LINK_FARM indicates that these links are likely intended to direct users to external content, potentially for SEO manipulation or to host malicious files. No scripts were extracted from this sample. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

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/6738736735/Nightfall-Keeper-of-the-Lost-Cities-6-by-Shannon-Messenger.pdf
    • http://cefasfese.4pu.com/3733737732735739/Keeper-of-the-Lost-Cities-Keeper-of-the-Lost-Cities-1-by-Shannon-Messenger.pdf
    • http://cefasfese.4pu.com/6734737736736/Sophie-Foster-by-Shannon-Messenger.pdf
    • http://cefasfese.4pu.com/7738733732737/Let-the-Sky-Fall-Trilogy-Let-the-Sky-Fall-Let-the-Storm-Break-Let-the-Wind-Rise-by-Shannon-Messenger.pdf
    • http://cefasfese.4pu.com/3733738733738736/Messenger-s-Angel-The-Lost-Angels-2-by-Heather-Killough-Walden.pdf
    • http://cefasfese.4pu.com/9730738737730731/The-Dark-Side-of-Nightfall-Book-One-Tales-From-Nightfall-Trilogy-by-Tim-O-39-Rourke.pdf
    • http://cefasfese.4pu.com/1733730736739732/The-Legend-of-Nightfall-Nightfall-1-by-Mickey-Zucker-Reichert.pdf
    • http://cefasfese.4pu.com/4733738730733737/The-Lost-Cities-of-Africa-by-Basil-Davidson.pdf
    • http://cefasfese.4pu.com/1734735730731737/NightFall-II-RAVEN-Nightfall-2-by-Anastacia-Kelley.pdf
    • http://cefasfese.4pu.com/1730738733730731/Eternal-Winter-Lost-Cities-by-Corinne-Banning.pdf
    • http://cefasfese.4pu.com/9737733736/The-Keeper-of-Lost-Things-by-Ruth-Hogan.pdf
    • http://cefasfese.4pu.com/4739737736/The-Keeper-of-Lost-Things-by-Ruth-Hogan.pdf
    • http://cefasfese.4pu.com/4738731736/The-Keeper-of-Lost-Things-by-Ruth-Hogan.pdf
    • http://cefasfese.4pu.com/5730734736731735/The-Keeper-of-Lost-Things-by-Ruth-Hogan.pdf
    • http://cefasfese.4pu.com/1731738737737737736/Lost-Cities-50-Discoveries-In-World-Archaeology-by-Paul-G-Bahn.pdf
    • http://cefasfese.4pu.com/4737730739735/The-Keeper-of-Lost-Causes-Department-Q-1-by-Jussi-Adler-Olsen.pdf
    • http://cefasfese.4pu.com/2737735738733738/Legend-of-the-Book-Keeper-Lost-City-Chronicles-1-by-Daniel-Blackaby.pdf
    • http://cefasfese.4pu.com/2731738737731739/Blood-of-the-Lost-Rylee-Adamson-10-by-Shannon-Mayer.pdf
    • http://cefasfese.4pu.com/1730739732739733736/50-Cities-of-the-U-S-A-Explore-America-s-cities-with-50-fact-filled-maps-by-Gabrielle-Balkan.pdf
    • http://cefasfese.4pu.com/3737736739733733/The-Keeper-Finds-Her-Mate-Keeper-of-Wolves-2-by-Red-Phoenix.pdf
    • http://cefasfese.4pu.com/9737733

Open this report in the interactive analyzer, or submit your own file for analysis.