PDF malware analysis — malicious · ea881a2b88717443

MALICIOUS

PDF

40.8 KB Created: 2021-04-26 13:38:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 96e44134fb2045e52ce77d0f39471073 SHA-1: 7ef50a6be4b84df75d3458dbbc2feeb0408a75ee SHA-256: ea881a2b887174430e0a78483cc2bb33fde293984070ee2b08f07accd04dd7f2

144 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF is identified as a phishing lure due to its image-only nature and embedded clickable link. The ClamAV detection and ML classifier further support its malicious classification. The document likely aims to redirect the user to a malicious website for credential harvesting or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.8113

Heuristics 5

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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 40 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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 https://www.natsihwa.org.au/sites/default/files/webform/42406093886.pdf In PDF document text
- http://www.sumnercountyhospital.org/sites/default/files/webform/bavowusakixonodokuja.pdfIn PDF document text
- https://www.woonsocketri.org/system/temporary/webform/kebadewanizokodijixupid.pdfIn PDF document text
- https://www.jsif.org/sites/default/files/webform/moridiwivomepagaduso.pdfIn PDF document text
- https://www.natsihwa.org.au/sites/default/files/webform/xexazud.pdfIn PDF document text
- https://www.natsihwa.org.au/sites/default/files/webform/72789215659.pdfIn PDF document text
- https://www.osgeurope.com/sites/osg-corporate.dev/files/webform/19824824677.pdfIn PDF document text
- https://www.woonsocketri.org/system/temporary/webform/bogobovimefegaf.pdfIn PDF document text
- https://www.cdcplumbing.com/sites/default/files/webform/contact-us/sawifujemenolezaf.pdfIn PDF document text
- https://www.enwidth.com/sites/default/files/webform/resumes/ralivowu.pdfIn PDF document text
- http://spotlight-sites.com/sites/default/files/webform/wokasonexigugeb.pdfIn PDF document text
- http://oaklandchildcare.org/sites/default/files/webform/ponezilineg.pdfIn PDF document text
- http://www.grotekeukens.be/sites/default/files/webform/gmawards2018/dakatiwilu.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=attach+rope+swing+to+treePDF link annotation
- https://ubmemeaensoprod.s3.amazonaws.com/ifsec_international/call_for_papers/2021/03/60395266702.pdfIn PDF document text
- https://campusrec.princeton.edu/system/files/webform/93394875634.pdfIn PDF document text
- https://lib.asu.edu/system/files/webform/90369837207.pdfIn PDF document text

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