Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2577580db4f9a78…

MALICIOUS

PDF

20.7 KB Created: 2019-05-01 12:03:55 +01:00 Authoring application: mPDF 5.7
MD5: 089cd4b31ac12866e80edb3453dd0e32 SHA-1: a6870a788d253cf555ed3a8985d2f90018df6ced SHA-256: b2577580db4f9a784239ad06e7d48a9e8757cbe5b9c6a09f13322715f321b520
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to a single domain, cefasfese.4pu.com, which is indicative of a link farm or SEO spam. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were extracted, the structure and the nature of the links suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9904

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/6738735737738734/The-Complete-Writings-of-Alfred-de-Musset-Volume-VI-by-Alfred-de-Musset.pdf
    • http://cefasfese.4pu.com/6738735736737734/A-Selection-from-the-Poetry-and-Comedies-of-Alfred-de-Musset-by-Alfred-de-Musset.pdf
    • http://cefasfese.4pu.com/6738735738731734/The-Complete-Writings-of-Alfred-de-Musset-Volume-IV-by-Alfred-de-Musset.pdf
    • http://cefasfese.4pu.com/6738735737737736/Alfred-de-Musset---L-int-grale-by-Alfred-de-Musset.pdf
    • http://cefasfese.4pu.com/6738735737734732/Alfred-the-passionate-life-of-Alfred-de-Musset-by-Haldane-Charlotte-Franken.pdf
    • http://cefasfese.4pu.com/6738735736736733/Alfred-de-Musset-by-Margaret-A-Rees.pdf
    • http://cefasfese.4pu.com/6738735737737738/Frederic-and-Bernerette-by-Alfred-de-Musset.pdf
    • http://cefasfese.4pu.com/6737730736736737/Les-Caprices-de-Marianne-On-ne-badine-pas-avec-l-amour-by-Alfred-de-Musset.pdf
    • http://cefasfese.4pu.com/6738735737735730/The-Life-of-Alfred-de-Musset-by-Barine-Arvede-1840-1908-Mme-.pdf
    • http://cefasfese.4pu.com/5736730734733733/Lorenzaccio-et-autres-textes-sur-la-question-politique-by-Alfred-de-Musset.pdf
    • http://cefasfese.4pu.com/8731738735735738/Fiche-de-Lecture-On-Ne-Badine-Pas-Avec-L-Amour-de-Alfred-de-Musset-by-Tram-Bach-Graulich.pdf
    • http://cefasfese.4pu.com/1738730730736736/Blackbird-Blackbird-1-by-Anna-Carey.pdf
    • http://cefasfese.4pu.com/6738735737737734/Portraits-of-The-Eerie-by-Mathilde-Musset-by-Mathilde-Musset.pdf
    • http://cefasfese.4pu.com/3739735735739737/The-White-Horse-King-The-Life-of-Alfred-the-Great-by-Benjamin-R-Merkle.pdf
    • http://cefasfese.4pu.com/2730734739732730/Seriously-Snow-White-Was-So-Forgetful-The-Story-of-Snow-White-as-Told-by-the-Dwarves-by-Nancy-Loewen.pdf
    • http://cefasfese.4pu.com/1731738734735730732/A-chinese-story-from-a-Berlin-practice-Alfred-D-blin-s-narrative-technique-in-Die-drei-Spr-nge-des-Wang-lun-by-John-H-Collins.pdf
    • http://cefasfese.4pu.com/4738735732732732/1d-The-One-Direction-Story-by-Danny-White-by-Danny-White.pdf
    • http://cefasfese.4pu.com/7730734734733734/Familypedia---Ancestry-from-England-ADA-May-Bath-Adella-May-Anthoney-Adrian-William-Bath-Agnes-Ashenden-Agnes-Ethel-Barnett-Albert-Baker-Albert-Henry-Avard-Albert-Victor-Adams-Alexander-Carlton-Apps-Alfred-Apps-Alfred-Bath-Alfred-Edward-Ada-by-Source-Wikia.pdf
    • http://cefasfese.4pu.com/6732738734731732/Musset-by-D-Nisard.pdf
    • http://cefasfese.4pu.com/1733739735737736/The-Aunt-s-Story-by-Patrick-White.pdf
    • http://cefasfese.4pu.com/8731738735735738/Fiche-de-Lecture-On-Ne-Ba