Malicious PDF — malware analysis report

Static analysis result for SHA-256 27f8b88462f5d1f9…

MALICIOUS

PDF

21.5 KB Created: 2019-05-03 17:55:21 +01:00 Authoring application: mPDF 5.7
MD5: 304fb8427cf983ad111ce9ebc0222f4e SHA-1: 963e5cc1c170d06474bddc9c2d225bafd58f6f0d SHA-256: 27f8b88462f5d1f9bc3f1cdc1d4eae90d49f564fcad262388abfecf6b66c34ae
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. While many of these URLs were classified as benign, the sheer volume and structure suggest a malicious intent, possibly for SEO poisoning or to distribute further malicious 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 0.9796

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/5734730733735734/A-Maigret-Trio-Maigret-s-Failure-Maigret-in-Society-Maigret-and-the-Lazy-Burglar-by-Georges-Simenon.pdf
    • http://cefasfese.4pu.com/5734730734737733/Maigret-Right-and-Wrong-Comprising-Maigret-in-Montmartre-and-Maigret-s-Mistake-by-Georges-Simenon.pdf
    • http://cefasfese.4pu.com/8737730733732733/H-W-Tilman-The-Seven-Mountain-Travel-Books-by-H-W-Tilman.pdf
    • http://cefasfese.4pu.com/8737730735734738/Tilman-Riemenschneider-Master-Sculptor-Of-The-Late-Middle-Ages-by-Tilman-Riemenschneider.pdf
    • http://cefasfese.4pu.com/5734730734735737/Maigret-and-the-Good-People-of-Montparnasse-Inspector-Maigret-58-by-Georges-Simenon.pdf
    • http://cefasfese.4pu.com/5734730734736732/Maigret-Hesitates-And-Maigret-Takes-The-Waters-by-Georges-Simenon.pdf
    • http://cefasfese.4pu.com/3733732736731737/Maigret-And-The-Loner-And-Maigret-And-The-Man-On-The-Boulevard-by-Georges-Simenon.pdf
    • http://cefasfese.4pu.com/4739732736731735/Maigret-Sets-a-Trap-Maigret-48-by-Georges-Simenon.pdf
    • http://cefasfese.4pu.com/5734730732732733/Maigret-and-the-Burglar-s-Wife-Maigret-38-by-Georges-Simenon.pdf
    • http://cefasfese.4pu.com/5734730732732734/Maigret-s-Mistake-Inspector-Maigret-43-by-Georges-Simenon.pdf
    • http://cefasfese.4pu.com/3736730732735734/My-Friend-Maigret-Maigret-31-by-Georges-Simenon.pdf
    • http://cefasfese.4pu.com/8736734735737731/Die-100-km-von-Biel---Ein-Selbstversuch-by-Uwe-Loll.pdf
    • http://cefasfese.4pu.com/1730731733732732733/ABC-XYZ-Kolumnen-2013-by-Clemens-Gleich.pdf
    • http://cefasfese.4pu.com/8736736738734731/Best-of-Also-Die-besten-Kolumnen-aus-Brigitte-by-Elke-Heidenreich.pdf
    • http://cefasfese.4pu.com/8736734735737736/Ich-sch-me-mich-Ein-Selbstversuch-by-Maximilian-Dorner.pdf
    • http://cefasfese.4pu.com/1731734732738732/Shipton-and-Tilman-by-Jim-Perrin.pdf
    • http://cefasfese.4pu.com/8737730734732731/Tilman-Riemenschneider-by-Art-Stock.pdf
    • http://cefasfese.4pu.com/1731732738733737731/Briefe-an-Gott-im-Himmel-und-auf-Erden-und-an-mein-P-nktchen-meinen-Antennenwels---Band-3-und-ausgew-hlte-Bibelausschnitte-by-P-nktchen-von-Spreckelsen.pdf
    • http://cefasfese.4pu.com/1731732738733736739/Briefe-an-Gott-im-Himmel-und-auf-Erden-und-an-mein-P-nktchen-meinen-Antennenwels-und-Erz-hlung-des-5-Buches-Moses---Band-6-by-P-nktchen-von-Spreckelsen.pdf
    • http://cefasfese.4pu.com/6738731736732739/The-ascent-of-Nanda-Devi-by-H-W-Tilman.pdf
    • http://cefasfese.4pu.com/5734730734735737/Maigret-and-the-Good-People-of-Montparnasse-Inspector-Maigret-58-by-Geor

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