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)
MD5: ef27ea86eb698701bbf89580f7c452f4 SHA-1: c04fd8f2b72a65f25eb00c6cf4654393a8f5153e SHA-256: 18c8134d9a4f99d370af68299db793537d9e98564417c611765fda750ad60419
154 Risk Score

Malware Insights

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

This PDF document is designed as a screenshot lure, presenting itself as a familiar interface to trick users into clicking embedded links. The heuristics indicate a high volume of external PDF links, suggesting a link farm or redirection mechanism. The primary malicious link identified is http://curvaceouscoutureweddingdressesboston.com/uploads/1/3/0/6/130620567/tedowodawivadodivol.pdf, which likely leads to a phishing page or a second-stage malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 26 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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
    • http://psychedaboutschool.com/uploads/1/3/0/4/130489342/vexifune.pdf
    • http://davidpastorius.com/uploads/1/3/0/5/130543305/7bdcb5d65f7b67f.pdf
    • http://rachaelcrossman.com/uploads/1/3/0/5/130588221/kowagoxogonokukave.pdf
    • http://www.therealpropertydiva.com/uploads/1/3/0/2/130291585/faxebi.pdf
    • http://ifthen.club/uploads/1/3/0/4/130476130/5aeb6aef6ea68e4.pdf
    • http://sbprocast.net/uploads/1/3/0/6/130621457/4702399.pdf
    • http://mta-sts.mail.jacquelineclewis.com/uploads/1/3/0/6/130605390/zovaluzoxinulabetuxu.pdf
    • http://curvaceouscoutureweddingdressesboston.com/uploads/1/3/0/6/130620567/tedowodawivadodivol.pdf
    • http://miembros-soylacasa.com/uploads/1/3/0/3/130323571/vatuvetumekuragokeka.pdf
    • http://mmcarterconsult.com/uploads/1/3/0/3/130313263/fodizozunugisaxip.pdf
    • http://mail.docairde.com/uploads/1/3/0/5/130542755/147ffe.pdf
    • http://cpanel.wafbc.com.au/uploads/1/3/0/6/130620484/cc35540d.pdf
    • http://microml.com/uploads/1/3/0/6/130620427/xukakezu.pdf
    • http://hostmaster.sarah-law.com/uploads/1/3/0/5/130588698/xapal.pdf
    • http://jassentawil.net/uploads/1/3/0/8/130813571/dadugudi.pdf
    • http://www.markopaulo.net/uploads/1/3/0/7/130775529/febomevabirazupowin.pdf
    • http://www.whimbletails.com/uploads/1/3/0/7/130775150/1683270.pdf
    • http://www.dwandcompany.net/uploads/1/3/0/3/130379123/970088.pdf
    • http://climatica.store/uploads/1/3/0/6/130604429/6156598.pdf
    • http://mssugarscloset.com/uploads/1/3/0/7/130775727/3992439.pdf
    • http://duvalplazalotowners.com/uploads/1/3/0/4/130483354/fezabu-buxewoloraxukil-libubumofu.pdf
    • http://jakeencinas.com/uploads/1/3/0/5/130590164/nugafejerivosutobol.pdf
    • http://getdirtygirl.com/uploads/1/3/0/3/130313000/kivutezonuz-lolixudopew.pdf
    • http://thegrampo.com/uploads/1/3/0/5/130588922/memela.pdf
    • http://london-office-5.pleasingfood.com/uploads/1/3/0/6/130620628/4439742.pdf

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