Malicious PDF — malware analysis report

Static analysis result for SHA-256 761b51c04c6f862f…

MALICIOUS

PDF

31.1 KB Created: 2019-05-02 05:09:24 +01:00 Authoring application: mPDF 5.7
MD5: 83398e602a747c882dfb013b723f2c74 SHA-1: 15d661c146e1f72b03dd2b3dce2a8d4ab3944116 SHA-256: 761b51c04c6f862fee45824912c48606966e618a6f4bae481d67534cf5f4ff57
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm, which is a common tactic for SEO poisoning or distributing malicious content. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were extracted, the sheer volume of links suggests an attempt to direct users to potentially harmful external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9689

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/2738732738736738/The-Pragmatics-of-Early-Modern-Politics-Power-and-Kingship-in-Shakespeare-s-History-Plays-by-Urszula-Kizelbach.pdf
    • http://cefasfese.4pu.com/8735735737739739/The-Works-The-Text-Formed-from-an-Entirely-New-Collation-of-the-Old-Editions-With-the-Various-Readings-Notes-a-Life-of-the-Poet-and-a-History-of-the-Early-English-Stage-Notes-and-Emendations-to-the-Text-of-Shakespeare-s-Plays-from-Early-by-William-Shakespeare.pdf
    • http://cefasfese.4pu.com/7739736734733736/The-Politics-of-Dialogic-Imagination-Power-and-Popular-Culture-in-Early-Modern-Japan-by-Katsuya-Hirano.pdf
    • http://cefasfese.4pu.com/5731733733734736/The-Rule-of-Moderation-Violence-Religion-and-the-Politics-of-Restraint-in-Early-Modern-England-by-Ethan-H-Shagan.pdf
    • http://cefasfese.4pu.com/5731736739738738/Politics-and-Power-in-Early-Medieval-Europe-Alsace-and-the-Frankish-Realm-600-1000-by-Hans-J-Hummer.pdf
    • http://cefasfese.4pu.com/1731735730738735/Early-Modern-Jewry-A-New-Cultural-History-by-David-B-Ruderman.pdf
    • http://cefasfese.4pu.com/5732732733739739/A-Bride-for-the-Tsar-Bride-Shows-and-Marriage-Politics-in-Early-Modern-Russia-by-Russell-E-Martin.pdf
    • http://cefasfese.4pu.com/5730738735733733/Empires-in-World-History-Power-and-the-Politics-of-Difference-by-Jane-Burbank.pdf
    • http://cefasfese.4pu.com/6738733735733737/Pearls-of-Shakespeare-A-Collection-of-the-Most-Brillant-Passages-Found-in-His-Plays-by-William-Shakespeare.pdf
    • http://cefasfese.4pu.com/1731730735735735731/Complete-Works-Ultimate-Collection-213-Plays-Poems-amp-Sonnets-including-the-16-rare-hard-to-get-Apocryphal-Plays-PLUS-FREE-BONUS-Material-by-William-Shakespeare.pdf
    • http://cefasfese.4pu.com/1731739737739732731/A-New-History-Of-Ireland-Vol-3-Early-Modern-Ireland-1534-1691-by-Theodore-William-Moody.pdf
    • http://cefasfese.4pu.com/7734739738735730/The-New-Cambridge-Modern-History-Volume-10-The-Zenith-of-European-Power-1830-70-by-John-Patrick-Tuer-Bury.pdf
    • http://cefasfese.4pu.com/5738739734730734/The-Early-Plays-Ivanov-Platonov-The-Wood-Demon-by-Anton-Chekhov.pdf
    • http://cefasfese.4pu.com/4735737730736730/William-Shakespeare-Complete-Plays-by-William-Shakespeare.pdf
    • http://cefasfese.4pu.com/1731732736737739734/Shakespeare-and-the-Late-Moral-Plays-by-Alan-C-Dessen.pdf
    • http://cefasfese.4pu.com/4739730738735730/Early-Records-Of-British-India-A-History-Of-The-English-Settlements-In-India-As-Told-In-The-Government-Records-The-Works-Of-Old-Travellers-And-Other-Contemporary-Documents-From-The-Earliest-Period-Down-To-The-Rise-Of-British-Power-In-India-by-James-Talboys-Wheeler.pdf
    • http://cefasfese.4pu.com/4738732735732731/Six-Modern-American-Plays-by-Allan-Gates-Halline.pdf
    • http://cefasfese.4pu.com/6738733735734737/Pearls-of-Shakespeare-A-Collection-of-the-Most-Brillant-Passages-Found-in-His-Plays-by-Anonymous.pdf
    • http://cefasfese.4pu.com/5736739730732737/Cold-War-Tom-Clancy-s-Power-Plays-5-by-Jerome-Preisler.pdf
    • http://cefasfese.4pu.com/1731738730731738734/Zero-Hour-Tom-Clancy-s-Power-Plays-7-by-Jerome-Preisler.pdf

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