Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f2331cc33dc23e8…

MALICIOUS

PDF

25.1 KB Created: 2019-05-05 05:02:34 +01:00 Authoring application: mPDF 5.7
MD5: 7023175a815d0d775eff29a437e74a2d SHA-1: 738a20f4927d59b40c65eb2d89c4122c319cbbb5 SHA-256: 7f2331cc33dc23e8e7c5f806ba04ef75d31bcd41f735909b8b939c08403ab391
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 documents, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier also flagged this PDF as malicious. While the document body is heavily obfuscated, the presence of numerous links suggests a deceptive or manipulative purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9773

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/4736732736733730/Streams-of-Silver-The-Graphic-Novel-Legend-of-Drizzt-The-Graphic-Novel-5-by-R-A-Salvatore.pdf
    • http://cefasfese.4pu.com/4736732736733736/Exile-The-Graphic-Novel-Legend-of-Drizzt-The-Graphic-Novel-2-by-R-A-Salvatore.pdf
    • http://cefasfese.4pu.com/1736733739731736/Streams-of-Silver-Forgotten-Realms-Icewind-Dale-2-Legend-of-Drizzt-5-by-R-A-Salvatore.pdf
    • http://cefasfese.4pu.com/2732730730734739/The-Companions-The-Sundering-1-The-Legend-of-Drizzt-24-by-R-A-Salvatore.pdf
    • http://cefasfese.4pu.com/2731732739736739/Sojourn-Dark-Elf-3-Legend-of-Drizzt-3-by-R-A-Salvatore.pdf
    • http://cefasfese.4pu.com/3733731736734739/Starless-Night-Legacy-of-the-Drow-2-Legend-of-Drizzt-8-by-R-A-Salvatore.pdf
    • http://cefasfese.4pu.com/3733732736734739/Siege-of-Darkness-Legacy-of-the-Drow-3-Legend-of-Drizzt-9-by-R-A-Salvatore.pdf
    • http://cefasfese.4pu.com/2734739731732739/Night-of-the-Hunter-Companions-Codex-1-Legend-of-Drizzt-25-by-R-A-Salvatore.pdf
    • http://cefasfese.4pu.com/2734739735737733/The-Last-Threshold-Forgotten-Realms-Neverwinter-4-Legend-of-Drizzt-23-by-R-A-Salvatore.pdf
    • http://cefasfese.4pu.com/2734738738733737/Rise-of-the-King-Companions-Codex-2-Legend-of-Drizzt-26-by-R-A-Salvatore.pdf
    • http://cefasfese.4pu.com/3733737737731/Homeland-Forgotten-Realms-The-Dark-Elf-Trilogy-1-Legend-of-Drizzt-1-by-R-A-Salvatore.pdf
    • http://cefasfese.4pu.com/3737730735731/Sojourn-Forgotten-Realms-The-Dark-Elf-Trilogy-3-Legend-of-Drizzt-3-by-R-A-Salvatore.pdf
    • http://cefasfese.4pu.com/2731738730734737/Homeland-Forgotten-Realms-The-Dark-Elf-Trilogy-1-Legend-of-Drizzt-1-by-R-A-Salvatore.pdf
    • http://cefasfese.4pu.com/1734732732732738/The-Thousand-Orcs-Forgotten-Realms-Hunter-s-Blades-1-Legend-of-Drizzt-14-by-R-A-Salvatore.pdf
    • http://cefasfese.4pu.com/2731734737734738/The-Crystal-Shard-Forgotten-Realms-Icewind-Dale-1-Legend-of-Drizzt-4-by-R-A-Salvatore.pdf
    • http://cefasfese.4pu.com/4738736731736/The-Silent-Blade-Forgotten-Realms-Paths-of-Darkness-1-Legend-of-Drizzt-11-by-R-A-Salvatore.pdf
    • http://cefasfese.4pu.com/3733732736737731/The-Silent-Blade-Forgotten-Realms-Paths-of-Darkness-1-Legend-of-Drizzt-11-by-R-A-Salvatore.pdf
    • http://cefasfese.4pu.com/4737734739733736/Starless-Night-Forgotten-Realms-Legacy-of-the-Drow-2-Legend-of-Drizzt-8-by-R-A-Salvatore.pdf
    • http://cefasfese.4pu.com/8732730732734/Starless-Night-Forgotten-Realms-Legacy-of-the-Drow-2-Legend-of-Drizzt-8-by-R-A-Salvatore.pdf
    • http://cefasfese.4pu.com/4732731733733735/The-Lost-Hero-The-Graphic-Novel-The-Heroes-of-Olympus-The-Graphic-Novels-1-by-Robert-Venditti.pdf

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