Malicious PDF — malware analysis report

Static analysis result for SHA-256 b18c907d742f36e2…

MALICIOUS

PDF

17.3 KB Created: 2020-03-10 11:35:08 +00:00 Authoring application: mPDF 5.7
MD5: c806efc473a29aac08b1c53a6a2ed04d SHA-1: 8d30b3ae4773382a5a96df3ae73d7f86c877888c SHA-256: b18c907d742f36e2a59ff7e377344f5945c77d0cb057acc5f5266555975e9f6a
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, pointing to book-related PDF files. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack pattern appears to be the distribution of malicious links disguised as legitimate content, potentially leading to further malware downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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://lwoscmobook.myhome.cx/252415242524652475247/City-of-Fallen-Angels-The-Mortal-Instruments-4-by-Cassandra-Clare.pdf
    • http://lwoscmobook.myhome.cx/152415246524752435245/City-of-Fallen-Angels-The-Mortal-Instruments-4-by-Cassandra-Clare.pdf
    • http://lwoscmobook.myhome.cx/452485243524452465241/City-of-Bones-City-of-Ashes-City-of-Glass-City-of-Fallen-Angels-City-of-Lost-Souls-The-Mortal-Instruments-1-5-by-Cassandra-Clare.pdf
    • http://lwoscmobook.myhome.cx/35249524452405242/The-Mortal-Instruments-the-Complete-Collection-City-of-Bones-City-of-Ashes-City-of-Glass-City-of-Fallen-Angels-City-of-Lost-Souls-City-of-Heavenly-Fire-by-Cassandra-Clare.pdf
    • http://lwoscmobook.myhome.cx/652455243524252455248/City-of-Bones-Mortal-Instruments-1-by-Cassandra-Clare.pdf
    • http://lwoscmobook.myhome.cx/552495243524052415243/City-of-Bones-The-Mortal-Instruments-1-by-Cassandra-Clare.pdf
    • http://lwoscmobook.myhome.cx/35242524652475246/City-of-Ashes-The-Mortal-Instruments-2-by-Cassandra-Clare.pdf
    • http://lwoscmobook.myhome.cx/352495243524752445247/City-of-Bones-The-Mortal-Instruments-1-by-Cassandra-Clare.pdf
    • http://lwoscmobook.myhome.cx/152415242524252495240/City-of-Bones-The-Mortal-Instruments-1-by-Cassandra-Clare.pdf
    • http://lwoscmobook.myhome.cx/352435240524052425246/The-Mortal-Instruments-City-of-Bones-by-Cassandra-Clare.pdf
    • http://lwoscmobook.myhome.cx/65243524052455241/City-of-Bones-The-Mortal-Instruments-1-by-Cassandra-Clare.pdf
    • http://lwoscmobook.myhome.cx/75243524652405243/City-of-Glass-The-Mortal-Instruments-3-by-Cassandra-Clare.pdf
    • http://lwoscmobook.myhome.cx/65240524852485245/City-of-Heavenly-Fire-The-Mortal-Instruments-6-by-Cassandra-Clare.pdf
    • http://lwoscmobook.myhome.cx/352435240524052435244/The-Mortal-Instruments-City-of-Bones-Trivia-by-Cassandra-Clare.pdf
    • http://lwoscmobook.myhome.cx/85248524252475245/City-of-Lost-Souls-The-Mortal-Instruments-5-by-Cassandra-Clare.pdf
    • http://lwoscmobook.myhome.cx/252475247524252465248/City-of-Lost-Souls-The-Mortal-Instruments-5-by-Cassandra-Clare.pdf
    • http://lwoscmobook.myhome.cx/352455248524752455241/City-of-Fallen-Angels-by-Cassandra-Clare.pdf
    • http://lwoscmobook.myhome.cx/25248524952475240/City-of-Fallen-Angels-by-Cassandra-Clare.pdf
    • http://lwoscmobook.myhome.cx/552425244524752405244/The-Mortal-Instruments-Les-origines-tome-3-by-Cassandra-Clare.pdf
    • http://lwoscmobook.myhome.cx/652435242524252495241/The-Official-Mortal-Instruments-Coloring-Book-by-Cassandra-Clare.pdf
    • http://lwoscmobook.myhome.cx/35242524652475246/Ci

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