PDF malware analysis — malicious · 1ba5af86b4aa8fc3

MALICIOUS

PDF

55.4 KB Created: 2021-04-23 23:14:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24

MD5: 16ee8c39d07410455cdbbba6da416352 SHA-1: 74f2150ba34233172be02092b6444f61727a9a4e SHA-256: 1ba5af86b4aa8fc3d5d34e28b327d56d535f401b65fe3c673cfc2827ba5ba17e

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many of which point to potentially malicious or unknown domains, suggesting a phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a large number of links on disposable hosting, further supporting this. ClamAV detection as 'Pdf.Phishing.Trojan' confirms the malicious nature. No scripts were extracted from this sample.

Machine Learning

Nyx PDF Classifier malicious score 0.6664

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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://cicatsalud.com/html/sites/default/files/webform/28693943460.pdf In PDF document text
- http://oaklandchildcare.org/sites/default/files/webform/71502920023.pdfIn PDF document text
- https://www.jts.org.jo/sites/default/files/webform/1653940235.pdfIn PDF document text
- https://www.jsif.org/sites/default/files/webform/nozixedexifanozavarojiro.pdfIn PDF document text
- https://www.jts.org.jo/sites/default/files/webform/76938035167.pdfIn PDF document text
- http://www.birdlifebotswana.org.bw/sites/default/files/webform/sightings-sketches/fipeforivu.pdfIn PDF document text
- https://www.jwico.com/sites/default/files/webform/69174909787.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=go+to+market+plan+template+powerpointPDF link annotation
- https://ubmemeaensoprod.s3.amazonaws.com/ifsec_international/call_for_papers/2021/03/60395266702.pdfIn PDF document text
- https://thesanfordschool.asu.edu/sites/default/files/webform/43157208480.pdfIn PDF document text
- https://community.princeton.edu/system/files/webform/64301273598.pdfIn PDF document text
- https://printandmail.princeton.edu/system/files/webform/fasulegok.pdfIn PDF document text
- https://www.vub.be/sites/vub/files/webform/86005813007.pdfIn PDF document text
- https://www.ice.cam.ac.uk/sites/www.ice.cam.ac.uk/files/webform/7842358922.pdfIn PDF document text
- https://gradfutures.princeton.edu/system/files/webform/xafuzekimizitigemuseli.pdfIn PDF document text
- https://community.princeton.edu/system/files/webform/vujipudujusikal.pdfIn PDF document text
- https://printandmail.princeton.edu/system/files/webform/mizol.pdfIn PDF document text
- https://printandmail.princeton.edu/system/files/webform/83328436210.pdfIn PDF document text
- https://www.vub.be/sites/vub/files/webform/gegisikirusesikogibo.pdfIn PDF document text

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