PDF malware analysis — malicious · 5109ed641d36b637

MALICIOUS

PDF

70.6 KB Created: 2021-04-21 18:13:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02

MD5: cd42642fcc856f3f692d98b14a2e8b9a SHA-1: c733b3b1660da424f310d5417b5e1c8c9d466026 SHA-256: 5109ed641d36b637e38367f2d748bbea5cd4bdaf52b85d0a8d3cb2bd25d74d6e

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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 https://www.uts.cw/sites/default/files/webform/50818196885.pdf In PDF document text
- https://www.jwico.com/sites/default/files/webform/xojisipet.pdfIn PDF document text
- http://www.grotekeukens.be/sites/default/files/webform/gmawards2018/48103714077.pdfIn PDF document text
- http://www.pacificsportfraservalley.com/sites/default/files/webform/pulipalukegibivep.pdfIn PDF document text
- https://www.jwico.com/sites/default/files/webform/69174909787.pdfIn PDF document text
- https://www.jwico.com/sites/default/files/webform/23528315583.pdfIn PDF document text
- http://www.sumnercountyhospital.org/sites/default/files/webform/sixativitav.pdfIn PDF document text
- http://cicatsalud.com/html/sites/default/files/webform/90703453713.pdfIn PDF document text
- http://cicatsalud.com/html/sites/default/files/webform/21030689395.pdfIn PDF document text
- https://www.natsihwa.org.au/sites/default/files/webform/xexazud.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/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=what+skills+do+you+need+to+be+in+the+navyPDF link annotation
- https://printandmail.princeton.edu/system/files/webform/98467125123.pdfIn PDF document text
- https://lib.asu.edu/system/files/webform/midari.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_off0000d7a2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD7A2	5196 bytes
SHA-256: `06bf896d092ae3033833632ab3b6194338275e5ddcf9fbcaa352a8ce237ce066`
`font_01_sfnt_off0000e95d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE95D	10612 bytes
SHA-256: `e4488defab6331152278c164c959296087106d67dc79a00442cc9a98060d8bed`

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