Malicious PDF — malware analysis report

Static analysis result for SHA-256 087c882ec807da47…

MALICIOUS

PDF

19.1 KB Created: 2019-05-01 12:14:06 +01:00 Authoring application: mPDF 5.7
MD5: 030c1394377ec8255ad4a9969629c1bf SHA-1: d7cd3b550b4945f81cdd0eaf950582b25501ac57 SHA-256: 087c882ec807da473c641e6d2d4f98d880b0de829496fb25ad8e8db1e9863bb2
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further 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 a coordinated effort to redirect users, likely as a precursor to a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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/9738732738737739/Deutsche-Kulturgeschichte-by-H-W-Kelling.pdf
    • http://cefasfese.4pu.com/1731737736736734731/Kunstler-Im-Klassenkampf-Sonderausstellung-Des-Museums-Fur-Deutsche-Geschichte-April-Bis-Juni-1988-by-Museum-F-Ur-Deutsche-Geschichte.pdf
    • http://cefasfese.4pu.com/1730730734735732736/Plan-F-r-Deutsche-Auswanderung-Und-Ansiedelung-Beziehungsweise-Einer-Reihe-Von-Ansiedelungen-in-Den-Vereinigten-Staaten-Von-Nordamerika-Auf-Ansuchen-Des-W-rttembergischen-Zweigvereins-Des-Nationalvereins-F-r-Deutsche-Auswanderung-Und-Ansiedelung-Zu-by-C-L-Fleischmann.pdf
    • http://cefasfese.4pu.com/1730736736733736734/Die-Kulturgeschichte-des-Weihnachtsessens-by-Claudia-Felsch.pdf
    • http://cefasfese.4pu.com/2739739734734733/Cursed-Blessings-by-Lynn-Kelling.pdf
    • http://cefasfese.4pu.com/3734737731736736/Forgive-Us-Deliver-Us-3-by-Lynn-Kelling.pdf
    • http://cefasfese.4pu.com/9738733730736734/Kulturgeschichte-Des-Alten-Vorderasien-by-Horst-Klengel.pdf
    • http://cefasfese.4pu.com/4739735732733733/Song-of-the-Lonesome-Cowboy-by-Lynn-Kelling.pdf
    • http://cefasfese.4pu.com/2736731739732733/Song-of-the-Lonesome-Cowboy-by-Lynn-Kelling.pdf
    • http://cefasfese.4pu.com/1730736737734739734/Andere-Umstande-Eine-Kulturgeschichte-Der-Geburt-by-Eva-Labouvie.pdf
    • http://cefasfese.4pu.com/9738733732735730/Die-Zeit-Welt-Und-Kulturgeschichte-In-20-B-nden-01-by-Juliane-Schlegel.pdf
    • http://cefasfese.4pu.com/3737730739735731/Threshold---A-Society-of-Masters-Anthology-by-Lynn-Kelling.pdf
    • http://cefasfese.4pu.com/4739731738737739/The-Convivial-Codfish-Kelling-amp-Bittersohn-5-by-Charlotte-MacLeod.pdf
    • http://cefasfese.4pu.com/3734737735733731/Caged-Jaye-Arctic-Absolution-50-by-Lynn-Kelling.pdf
    • http://cefasfese.4pu.com/1734737731735739/The-Palace-Guard-Kelling-amp-Bittersohn-3-by-Charlotte-MacLeod.pdf
    • http://cefasfese.4pu.com/3737738732731735/Blind-Mazes-A-Study-Of-Love-by-George-W-Kelling.pdf
    • http://cefasfese.4pu.com/2733734732733734/Double-Heat-Twin-Ties-3-by-Lynn-Kelling.pdf
    • http://cefasfese.4pu.com/3737735730735735/The-Family-Vault-Kelling-amp-Bittersohn-1-by-Charlotte-MacLeod.pdf
    • http://cefasfese.4pu.com/1731738737731739732/Oldenburg-Kulturgeschichte-Einer-Historischen-Landschaft-by-Siglinde-Killisch.pdf
    • http://cefasfese.4pu.com/9738733733732732/Redebegleitende-Gesten-Kulturgeschichte-Theorie-Sprachvergleich-by-Cornelia-M-ller.pdf

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