Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8b251f49a4c1150…

MALICIOUS

PDF

16.1 KB Created: 2019-05-01 18:57:29 +01:00 Authoring application: mPDF 5.7
MD5: e7fbf91fa6cd83ec5483ffd95a927cf7 SHA-1: 6dfd614bec0e355e80da14696a9e754875c9e3ea SHA-256: e8b251f49a4c115027db28fd791067e9ce0b0ba62ec0d6f90a1e1957c055210b
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external websites, a technique often used for SEO spam or to redirect users to malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample, and the document body was heavily obfuscated, making it difficult to determine the exact nature of the lure beyond the link farm. The primary IOCs are the numerous URLs embedded within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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://xiixmcuin.linkpc.net/3207205205208/The-Cairo-Trilogy-Palace-Walk-Palace-of-Desire-Sugar-Street-The-Cairo-Trilogy-1-3-by-Naguib-Mahfouz.pdf
    • http://xiixmcuin.linkpc.net/2207207208206201/The-Cairo-Trilogy-Palace-Walk-Palace-of-Desire-Sugar-Street-by-Naguib-Mahfouz.pdf
    • http://xiixmcuin.linkpc.net/4208209201209203/Novels-by-Naguib-Mahfouz-Palace-Walk-the-Journey-of-Ibn-Fattouma-the-Beggar-Midaq-Alley-the-Thief-and-the-Dogs-Children-of-Gebelawi-by-Naguib-Mahfouz.pdf
    • http://xiixmcuin.linkpc.net/1208207204205200/Sugar-Street-by-Naguib-Mahfouz.pdf
    • http://xiixmcuin.linkpc.net/4202203207203/The-Poisoned-Rose-The-Gin-Palace-Trilogy-1-by-Daniel-Judson.pdf
    • http://xiixmcuin.linkpc.net/3201206204206206/The-Poisoned-Rose-The-Gin-Palace-Trilogy-1-by-Daniel-Judson.pdf
    • http://xiixmcuin.linkpc.net/9201201207206202/Palace-of-Glass---Die-W-chterin-Palace-Saga-1-by-C-E-Bernard.pdf
    • http://xiixmcuin.linkpc.net/2208200207202206/Thebes-at-War-by-Naguib-Mahfouz.pdf
    • http://xiixmcuin.linkpc.net/4209200203200200/Miramar-by-Naguib-Mahfouz.pdf
    • http://xiixmcuin.linkpc.net/2203206209201205/Miramar-by-Naguib-Mahfouz.pdf
    • http://xiixmcuin.linkpc.net/5200205200200201/Children-of-Gebelawi-by-Naguib-Mahfouz.pdf
    • http://xiixmcuin.linkpc.net/4207207209201/The-Journey-of-Ibn-Fattouma-by-Naguib-Mahfouz.pdf
    • http://xiixmcuin.linkpc.net/8204204208207/The-Day-the-Leader-Was-Killed-by-Naguib-Mahfouz.pdf
    • http://xiixmcuin.linkpc.net/1201205204205209201/Echnaton-Der-in-der-Wahrheit-lebt-by-Naguib-Mahfouz.pdf
    • http://xiixmcuin.linkpc.net/9201204203207207/The-Seventh-Heaven-Supernatural-Tales-by-Naguib-Mahfouz.pdf
    • http://xiixmcuin.linkpc.net/1208207204209207/Voices-from-the-Other-World-Ancient-Egyptian-Tales-by-Naguib-Mahfouz.pdf
    • http://xiixmcuin.linkpc.net/9201208208209206/The-Man-Handler-by-Cairo.pdf
    • http://xiixmcuin.linkpc.net/3205204200200203/Three-Novels-Midaq-Alley-The-Thief-and-the-Dogs-Miramar-by-Naguib-Mahfouz.pdf
    • http://xiixmcuin.linkpc.net/6207206208201201/Cairo-by-Hermann-a-Peine.pdf
    • http://xiixmcuin.linkpc.net/4208203202200205/Circle-of-Change-by-Laney-Cairo.pdf
    • http://xiixmcuin.linkpc.net/2208200207202206/Thebes-at-War-by-Naguib

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