PDF malware analysis — malicious · 3d3ed5e1853e3820

MALICIOUS

PDF

68.5 KB Created: 2021-04-21 03:38:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 3ded10c830bb2d50bd92bc5fd3490c58 SHA-1: 92c161226f40984938854c70d5b7cef0918f52fa SHA-256: 3d3ed5e1853e3820587c0def177fc72659ec5e6b5cde5d8e55a167f5ef0284f5

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.natsihwa.org.au/sites/default/files/webform/17947704001.pdf In PDF document text
- https://ambrose.edu/sites/default/files/webform/11364316539.pdfIn PDF document text
- https://ambrose.edu/sites/default/files/webform/2306024917.pdfIn PDF document text
- https://ambrose.edu/sites/default/files/webform/padubomi.pdfIn PDF document text
- https://www.uts.cw/sites/default/files/webform/vogoledifekotukedadawen.pdfIn PDF document text
- https://ambrose.edu/sites/default/files/webform/vopezupudatirarib.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/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=what+size+tires+fit+a+2008+ford+escapePDF link annotation
- https://ubmemeaensoprod.s3.amazonaws.com/ifsec_international/call_for_papers/2021/03/wutiladerotegedubel.pdfIn PDF document text
- https://printandmail.princeton.edu/system/files/webform/zixulupuritijidegebi.pdfIn PDF document text
- https://ubmemeaensoprod.s3.amazonaws.com/ifsec_international/call_for_papers/2021/03/jonigumeneritid.pdfIn PDF document text
- https://www.healthdata.org/sites/default/files/resumes/18848190838.pdfIn PDF document text
- https://lib.asu.edu/system/files/webform/bejugejotofetuxiw.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_off0000ce74.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCE74	5744 bytes
SHA-256: `317a7cf61f04187fa34bbe42a220da57e78a8d10d04cf1f6c3539ffba88ae523`
`font_01_sfnt_off0000e211.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE211	10272 bytes
SHA-256: `dd625ed4ced5b537595822560655719e2d68b0ba79763d2984f1b3ea6f5e019a`

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