Malicious PDF — malware analysis report

Static analysis result for SHA-256 c70e4c7dd9592b52…

MALICIOUS

PDF

16.4 KB Created: 2020-03-16 23:45:17 +00:00 Authoring application: mPDF 5.7
MD5: ac8b09c53ae5b6635cb81a67fd84ae5c SHA-1: cae4b4f6c71374260ff5418f9c52fd0f1460e1d2 SHA-256: c70e4c7dd9592b5262c4fd0213abf866160710fe52b7390869aead4074e0f35d
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to a single suspicious domain, a technique often used for SEO poisoning or to redirect users to malicious content. The ML classifier also flagged this PDF as malicious. The presence of numerous links to PDFs with book titles suggests an attempt to disguise malicious activity as legitimate content distribution.

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://calistazz.myhome.cx/7863862861863867/The-Metamorphosis-by-Franz-Kafka-Annotated-and-Translated-Edition-Die-Verwandlung-Franz-Kafka-Collection-Book-1-by-Franz-Kafka.pdf
    • http://calistazz.myhome.cx/9865861868869868/Franz-Kafka-Briefe-an-die-Eltern-Aus-den-Jahren-1922---1924-by-Franz-Kafka.pdf
    • http://calistazz.myhome.cx/7866862863865864/The-Trial-by-Franz-Kafka-Classic-Annotated-and-Translated-Edition-by-Franz-Kafka.pdf
    • http://calistazz.myhome.cx/4867865868868861/The-Diaries-of-Franz-Kafka-1910-1913-by-Franz-Kafka.pdf
    • http://calistazz.myhome.cx/5862868869867867/Franz-Kafka---Collected-Works-by-Franz-Kafka.pdf
    • http://calistazz.myhome.cx/8869868862864868/Franz-Kafka---Gesammelte-Werke-Von-quot-Die-Verwandlung-quot-ber-quot-Der-Prozess-quot-bis-hin-zu-quot-Das-Schloss-quot-Illustrierte-Ausgabe-by-Franz-Kafka.pdf
    • http://calistazz.myhome.cx/7865861862863863/The-Essential-Kafka-The-Castle-The-Trial-Metamorphosis-and-Other-Stories-by-Franz-Kafka.pdf
    • http://calistazz.myhome.cx/5862868868861868/The-Judgement-by-Franz-Kafka.pdf
    • http://calistazz.myhome.cx/5868866866862866/The-Trial-by-Franz-Kafka.pdf
    • http://calistazz.myhome.cx/1860861860866865861/The-Castle-by-Franz-Kafka.pdf
    • http://calistazz.myhome.cx/6869863865863/The-Castle-by-Franz-Kafka.pdf
    • http://calistazz.myhome.cx/4867868864863867/The-Trial-by-Franz-Kafka.pdf
    • http://calistazz.myhome.cx/5866861868866864/Metamorphosis-by-Franz-Kafka.pdf
    • http://calistazz.myhome.cx/8867860861863863/Brief-an-den-Vater-by-Franz-Kafka.pdf
    • http://calistazz.myhome.cx/3864866869868/Amerika-by-Franz-Kafka.pdf
    • http://calistazz.myhome.cx/6860866866868865/The-Trial-by-Franz-Kafka.pdf
    • http://calistazz.myhome.cx/1863869864866867/The-Castle-by-Franz-Kafka.pdf
    • http://calistazz.myhome.cx/9862868868869865/The-Castle-by-Franz-Kafka.pdf
    • http://calistazz.myhome.cx/7864863867868867/The-Metamorphosis-by-Franz-Kafka.pdf
    • http://calistazz.myhome.cx/4861860865860868/The-Castle-by-Franz-Kafka.pdf
    • http://calistazz.myhome.cx/7865861862863863/The-Essential-Kafka-The-Castle-The-Trial-Metamorphosis-and-Other-Stories-by-Franz-Kafka

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