Malicious PDF — malware analysis report

Static analysis result for SHA-256 90950cb6aaff8dd8…

MALICIOUS

PDF

23.8 KB Created: 2019-05-03 05:04:39 +01:00 Authoring application: mPDF 5.7
MD5: 24e3431fa425d8feeaa8cbd28eae3abe SHA-1: 17fb15fbb49bee313e9f856cb176a9b945b58bd0 SHA-256: 90950cb6aaff8dd85ed8c544b067617b174d5274041a472a4510f680c035b7be
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, masquerading as legitimate book titles. This technique is often used to drive traffic to malicious sites or to distribute further malware. 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 0.9726

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/1738739734734731/Life-in-the-English-Country-House-A-Social-and-Architectural-History-by-Mark-Girouard.pdf
    • http://cefasfese.4pu.com/3734734731734737/The-English-Country-House-From-the-Archives-of-Country-Life-by-Mary-Miers.pdf
    • http://cefasfese.4pu.com/9739738739731738/Alfred-Waterhouse-And-The-Natural-History-Museum-by-Mark-Girouard.pdf
    • http://cefasfese.4pu.com/1739731730732730/Biography-of-a-Tenement-House-in-New-York-City-An-Architectural-History-of-97-Orchard-Street-by-Andrew-S-Dolkart.pdf
    • http://cefasfese.4pu.com/3734734731732735/English-Country-House-Murders-by-Thomas-Godfrey.pdf
    • http://cefasfese.4pu.com/3734733736737734/The-English-Country-House-A-Grand-Tour-by-Gervase-Jackson-Stops.pdf
    • http://cefasfese.4pu.com/2730731736732730/A-Social-History-of-English-Cricket-by-Derek-Birley.pdf
    • http://cefasfese.4pu.com/5735730730739734/The-English-A-Social-History-1066-1945-by-Christopher-Hibbert.pdf
    • http://cefasfese.4pu.com/2733739731733738/The-English-Garden-A-Social-History-by-Charles-Quest-Ritson.pdf
    • http://cefasfese.4pu.com/3734733734739731/Up-and-Down-Stairs-The-History-of-the-Country-House-Servant-by-Jeremy-Musson.pdf
    • http://cefasfese.4pu.com/9732734739734735/The-Queen-s-House-A-Social-History-of-Buckingham-Palace-by-Edna-Healey.pdf
    • http://cefasfese.4pu.com/4739734736733736/A-Natural-History-of-English-Gardening-1650-1800-by-Mark-Laird.pdf
    • http://cefasfese.4pu.com/3739735732737732/Centuries-of-Childhood-A-Social-History-of-Family-Life-by-Philippe-Ari-s.pdf
    • http://cefasfese.4pu.com/5730736730732737/Bargaining-for-Life-A-Social-History-of-Tuberculosis-1876-1938-by-Barbara-Bates.pdf
    • http://cefasfese.4pu.com/5738731737730738/O-Sing-Unto-the-Lord-A-History-of-English-Church-Music-A-History-of-English-Church-Music-by-Andrew-Gant.pdf
    • http://cefasfese.4pu.com/9731732739730732/English-German-Russian-Bible---The-Gospels-II---Matthew-Mark-Luke-amp-John-Basic-English-1949---Elberfelder-1905-----1876-by-Truthbetold-Ministry.pdf
    • http://cefasfese.4pu.com/7738733735738732/History-as-They-Lived-It-A-Social-History-of-Prairie-Du-Rocher-Illinois-by-Margaret-Kimball-Brown.pdf
    • http://cefasfese.4pu.com/1731733730737731/The-Secret-Life-of-Words-How-English-Became-English-by-Henry-Hitchings.pdf
    • http://cefasfese.4pu.com/3736739732735733/English-Lit-Relit-A-Short-History-of-English-Literature-from-the-Precursors-Before-Swearing-to-the-Pre-Raphaelites-and-a-Little-After-Intended-to-Help-Students-See-the-Thing-Through-or-See-Through-the-Thing-and-Omitting-Nothing-Unimportant-by-Richard-Armour.pdf
    • http://cefasfese.4pu.com/7734734730732732/Foster-Associates-Recent-Works-Recent-Works-Architectural-Monographs-No-20-by-Architectural-Monograph.pdf
    • http://cefasfese.4pu.com/2733739731733738/The-English-Garden-A-Social-History-by-Charl