PDF malware analysis — malicious · d138196834ce8e08

MALICIOUS

PDF

66.3 KB Created: 2021-04-27 09:47:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 6cff8e02e45db1b563653f4cdd23060e SHA-1: 6de5fd4633913773dea28774e2a8a871a40625cf SHA-256: d138196834ce8e083ca1331c93a1379eba668c21dad6dccdd848a1d44eb359a5

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to suspicious PDF files, suggesting a phishing or malware distribution campaign. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of an attempt to redirect users to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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.grotekeukens.be/sites/default/files/webform/gmawards2018/sakobonomoduriv.pdf In PDF document text
- http://www.birdlifebotswana.org.bw/sites/default/files/webform/sightings-sketches/lewuxevibonotokezesa.pdfIn PDF document text
- http://cicatsalud.com/html/sites/default/files/webform/bulurifabisiwotubavigivos.pdfIn PDF document text
- https://www.blplegal.com/sites/default/files/webform/32112495638.pdfIn PDF document text
- https://grossenbacher.co.nz/en/system/files/avoidance-training-certificates/4264017636.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=how+to+do+a+short+quotePDF link annotation
- https://community.princeton.edu/system/files/webform/putirufulexuxibo.pdfIn PDF document text
- https://ec.europa.eu/eip/agriculture/sites/default/files/webform/zuwamusijugowop.pdfIn PDF document text
- https://www.vub.be/sites/vub/files/webform/pagilavamuvawasaxega.pdfIn PDF document text
- https://minorsoncampus.princeton.edu/system/files/webform/fujixedapilevunagujos.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ca09.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCA09	5060 bytes
SHA-256: `489b1c0a7c18ed457e7f8c95a9985a15ac18d913c4450553842619060b1d00b8`
`font_01_sfnt_off0000db44.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDB44	10232 bytes
SHA-256: `77ab97533e3cd2f0e6ef47ebd848198907595172bb22ff8fb3a04ac5f71fc964`

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