Malicious PDF — malware analysis report

Static analysis result for SHA-256 18c8134d9a4f99d3…

MALICIOUS

PDF

26.4 KB Created: 2020-03-08 06:42:01 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-09
MD5: ef27ea86eb698701bbf89580f7c452f4 SHA-1: c04fd8f2b72a65f25eb00c6cf4654393a8f5153e SHA-256: 18c8134d9a4f99d370af68299db793537d9e98564417c611765fda750ad60419
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of embedded links, identified as a link farm, with many pointing to other PDF files. The ML classifier strongly indicates maliciousness. The primary attack pattern involves tricking the user into clicking these links, which likely leads to the download and execution of further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://www.irving0726.net/uploads/1/3/0/8/130873791/130873791.html#tp+link+re200+setup PDF link annotation
    • http://psychedaboutschool.com/uploads/1/3/0/4/130489342/vexifune.pdfIn PDF document text
    • http://davidpastorius.com/uploads/1/3/0/5/130543305/7bdcb5d65f7b67f.pdfIn PDF document text
    • http://rachaelcrossman.com/uploads/1/3/0/5/130588221/kowagoxogonokukave.pdfIn PDF document text
    • http://www.therealpropertydiva.com/uploads/1/3/0/2/130291585/faxebi.pdfIn PDF document text
    • http://ifthen.club/uploads/1/3/0/4/130476130/5aeb6aef6ea68e4.pdfIn PDF document text
    • http://sbprocast.net/uploads/1/3/0/6/130621457/4702399.pdfIn PDF document text
    • http://mta-sts.mail.jacquelineclewis.com/uploads/1/3/0/6/130605390/zovaluzoxinulabetuxu.pdfIn PDF document text
    • http://curvaceouscoutureweddingdressesboston.com/uploads/1/3/0/6/130620567/tedowodawivadodivol.pdfIn PDF document text
    • http://miembros-soylacasa.com/uploads/1/3/0/3/130323571/vatuvetumekuragokeka.pdfIn PDF document text
    • http://mmcarterconsult.com/uploads/1/3/0/3/130313263/fodizozunugisaxip.pdfIn PDF document text
    • http://mail.docairde.com/uploads/1/3/0/5/130542755/147ffe.pdfIn PDF document text
    • http://cpanel.wafbc.com.au/uploads/1/3/0/6/130620484/cc35540d.pdfIn PDF document text
    • http://microml.com/uploads/1/3/0/6/130620427/xukakezu.pdfIn PDF document text
    • http://hostmaster.sarah-law.com/uploads/1/3/0/5/130588698/xapal.pdfIn PDF document text
    • http://jassentawil.net/uploads/1/3/0/8/130813571/dadugudi.pdfIn PDF document text
    • http://www.markopaulo.net/uploads/1/3/0/7/130775529/febomevabirazupowin.pdfIn PDF document text
    • http://www.whimbletails.com/uploads/1/3/0/7/130775150/1683270.pdfIn PDF document text
    • http://www.dwandcompany.net/uploads/1/3/0/3/130379123/970088.pdfIn PDF document text
    • http://climatica.store/uploads/1/3/0/6/130604429/6156598.pdfIn PDF document text
    • http://mssugarscloset.com/uploads/1/3/0/7/130775727/3992439.pdfIn PDF document text
    • http://duvalplazalotowners.com/uploads/1/3/0/4/130483354/fezabu-buxewoloraxukil-libubumofu.pdfIn PDF document text
    • http://jakeencinas.com/uploads/1/3/0/5/130590164/nugafejerivosutobol.pdfIn PDF document text
    • http://getdirtygirl.com/uploads/1/3/0/3/130313000/kivutezonuz-lolixudopew.pdfIn PDF document text
    • http://thegrampo.com/uploads/1/3/0/5/130588922/memela.pdfIn PDF document text
    • http://london-office-5.pleasingfood.com/uploads/1/3/0/6/130620628/4439742.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

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