Malicious PDF — malware analysis report

Static analysis result for SHA-256 2584ef4fa3bed569…

MALICIOUS

PDF

16.2 KB Created: 2019-05-02 17:41:46 +01:00 Authoring application: mPDF 5.7
MD5: 5181f41db9b6f7a46d39325254353a26 SHA-1: 1fffb6aaeed363253fff814e8ffcc14796c30111 SHA-256: 2584ef4fa3bed569d20bd6d0be80e528d5c38c3d58982aa6e935fa1a28f21b04
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, forming a link farm. The primary heuristic indicates this is a SEO spam technique, likely intended to drive traffic to malicious or deceptive content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

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/1730731731736734735/Swedish-Castle-Introduction-Gripsholm-Castle-Kalmar-Castle-Naas-Castle-Vadstena-Castle-Malmo-Castle-Bjarka-Saby-Castle-by-Source-Wikipedia.pdf
    • http://cefasfese.4pu.com/6731735731739735/Doncaster-from-the-Scrivens-Collection-by-Peter-Tuffrey.pdf
    • http://cefasfese.4pu.com/6731735733733738/Edit-Is-a-Four-Letter-Word-How-to-Create-the-Best-First-Impression-by-Glynis-Scrivens.pdf
    • http://cefasfese.4pu.com/6731735733733735/The-Lady-Lord-Mayors-of-Norwich-1923---2017-by-Phyllida-Scrivens.pdf
    • http://cefasfese.4pu.com/9736737737734733/Dolwyddelan-Castle---Dolbadarn-Castle---Castell-Y-Bere-by-Richard-Avent.pdf
    • http://cefasfese.4pu.com/3730733732734732/Castle-in-the-Air-Howl-s-Moving-Castle-2-by-Diana-Wynne-Jones.pdf
    • http://cefasfese.4pu.com/1731731731732730732/Castle-for-Rent-Castle-Perilous-2-by-John-DeChancie.pdf
    • http://cefasfese.4pu.com/4738732734736735/Castle-Spellbound-Castle-Perilous-7-by-John-DeChancie.pdf
    • http://cefasfese.4pu.com/2737736738738/Tuesdays-at-the-Castle-Castle-Glower-1-by-Jessica-Day-George.pdf
    • http://cefasfese.4pu.com/1736733731734735/Howl-s-Moving-Castle-Picture-Book-Howl-s-Moving-Castle-Film-Comics-1-by-Hayao-Miyazaki.pdf
    • http://cefasfese.4pu.com/1737732736734736/Castle-Perilous-Castle-Perilous-1-by-John-DeChancie.pdf
    • http://cefasfese.4pu.com/3736735730737/Howl-s-Moving-Castle-Howl-s-Moving-Castle-1-by-Diana-Wynne-Jones.pdf
    • http://cefasfese.4pu.com/4734738738737733/Man-And-Dolphin-by-John-C-Lilly.pdf
    • http://cefasfese.4pu.com/7731738732739730/Unexpected-by-Lilly-Avalon.pdf
    • http://cefasfese.4pu.com/3734735737733737/She-s-One-of-the-Boys-by-lilly-rain.pdf
    • http://cefasfese.4pu.com/8739731739732731/Saving-Lilly-by-Peg-Kehret.pdf
    • http://cefasfese.4pu.com/9738734739733737/The-Romance-Report-by-Amy-E-Lilly.pdf
    • http://cefasfese.4pu.com/7735731733736731/The-Inseparables-by-Sara-Lilly.pdf
    • http://cefasfese.4pu.com/3739738731733733/Visiting-Lilly-by-Toni-Allen.pdf
    • http://cefasfese.4pu.com/2735731734738738/Wholesale-Husband-by-Lilly-Gayle.pdf

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