PDF malware analysis — malicious · 6994e361c23accaa

MALICIOUS

PDF

76.0 KB Created: 2021-04-11 19:16:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29

MD5: 62f013c62bfcd31d8eb60c554803d01b SHA-1: 5fed7c1a05c4e02f893b6caded86ffec867582a7 SHA-256: 6994e361c23accaa10f16ffc96270906c21e52c646b4129b3f45a43953be7dd9

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains multiple embedded URLs, some of which are confirmed benign but others are unknown, suggesting a potential phishing or malware distribution attempt. The presence of PDF-specific heuristics further supports its malicious nature.

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 http://www.birdlifebotswana.org.bw/sites/default/files/webform/sightings-sketches/fipeforivu.pdf In PDF document text
- http://www.birdlifebotswana.org.bw/sites/default/files/webform/sightings-sketches/13349970620.pdfIn PDF document text
- https://www.mothercare.ro/sites/default/files/webform/resumes/susumijifiwef.pdfIn PDF document text
- https://www.a1touchsolution.nl/sites/default/files/56489371510.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/~3/3CAf4wW3hvY/uplcv?utm_term=kamala+das+poems+pdfPDF link annotation
- https://lib.asu.edu/system/files/webform/bidemuf.pdfIn PDF document text
- https://community.princeton.edu/system/files/webform/36479690150.pdfIn PDF document text
- https://lib.asu.edu/system/files/webform/56381184371.pdfIn PDF document text
- https://minorsoncampus.princeton.edu/system/files/webform/kuwidiloj.pdfIn PDF document text
- https://printandmail.princeton.edu/system/files/webform/83401752781.pdfIn PDF document text
- https://community.princeton.edu/system/files/webform/13590028771.pdfIn PDF document text
- https://printandmail.princeton.edu/system/files/webform/zixulupuritijidegebi.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_off0000ee50.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE50	5060 bytes
SHA-256: `1ddc72d6ad06fbf9b5b080b7512803bb5e25bb1e4523ecc4a94f556e426f469f`
`font_01_sfnt_off0000ff82.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF82	10736 bytes
SHA-256: `34b551c924c9eb596b954165b685ca3ef1a1d04a1202da7c469a5e08a9e32ff6`

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