Malicious PDF — malware analysis report

Static analysis result for SHA-256 d016d8292195d499…

MALICIOUS

PDF

19.7 KB Created: 2020-03-20 19:39:02 +00:00 Authoring application: mPDF 5.7
MD5: a67526b3182236540d860cf98b1f15b3 SHA-1: 9f73f6f6b6d924c9104f89702432370a10c2dbed SHA-256: d016d8292195d499ae5243049f75372b779ec6b4005745cf9681ff0ca14f24f2
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier also flagged this sample as malicious with high confidence. The dominant host for these links is calistazz.myhome.cx, which is highly suspicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9780

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/5869860863864863/Kafka-s-Milena-by-Jana-ern-.pdf
    • http://calistazz.myhome.cx/9864865861869867/Briefe-an-Milena-by-Franz-Kafka.pdf
    • 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/7865861862863863/The-Essential-Kafka-The-Castle-The-Trial-Metamorphosis-and-Other-Stories-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/3860862866861863/Milena---Crazy-in-Love-by-Christine-Thomas.pdf
    • http://calistazz.myhome.cx/1860866867868866861/Lesespatz-Wirbel-in-der-Hexenschule-by-Milena-Baisch.pdf
    • http://calistazz.myhome.cx/5862868869867867/Franz-Kafka---Collected-Works-by-Franz-Kafka.pdf
    • http://calistazz.myhome.cx/8868869860863860/Peony-Red-A-Case-for-Milena-Lukin-by-Christian-Sch-nemann.pdf
    • http://calistazz.myhome.cx/1861866866867869867/Hund-auf-Rezept-Warum-Hunde-gesund-f-r-uns-sind-by-Dr-Milena-Penkowa.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/9865866862865864/Wenn-Erinnern-Schuld-ist-Rekonstruktion-und-Bewertung-von-Erinnerung-in-Christa-Wolfs-quot-Kindheitsmuster-quot-by-Anna-Milena-Jurca.pdf
    • http://calistazz.myhome.cx/1861868864867867862/Women-in-the-Shadows-Mileva-Einstein-Mari-Margarete-Jeanne-Trakl-Lise-Meitner-Milena-Jesensk-and-Margarete-Sch-tte-Lihotzky-by-Charles-S-Chiu.pdf
    • http://calistazz.myhome.cx/1867868865867868/Foretold-by-Jana-Oliver.pdf
    • http://calistazz.myhome.cx/5860864868866860/Wrong-by-Jana-Aston.pdf
    • http://calistazz.myhome.cx/9865867864867860/After-The-Wall-by-Jana-Hensel.pdf
    • http://calistazz.myhome.cx/7869867862867/The-Last-Cowgirl-by-Jana-Richman.pdf
    • http://calistazz.myhome.cx/1861868860860862865/Jana-die-Maklerin-in-Ketten-by-Dom-Mike-ZED.pdf
    • http://calistazz.myhome.cx/7866862863865864/The-Trial-by-Franz-Kafka-Classic-Annotated-and-Translated-Edition-by

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