PDF malware analysis — malicious · 855eb22f0e61df59

MALICIOUS

PDF

66.3 KB Created: 2021-04-19 00:29:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 1de94f1645c2c926f673db94771b647a SHA-1: 1c4e3c624e822e94ee884752a255dd682677c875 SHA-256: 855eb22f0e61df59147b36e96c909b6d25cb2953ef553e692d5a9106e58df9fa

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 0.9997

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.enwidth.com/sites/default/files/webform/resumes/fudigebifofonixetizitalu.pdf In PDF document text
- https://www.jwico.com/sites/default/files/webform/41164207556.pdfIn PDF document text
- http://klm3fg.grhosting.cz/sites/default/files/webform/files/wajuso.pdfIn PDF document text
- https://www.enwidth.com/sites/default/files/webform/resumes/ziwisotug.pdfIn PDF document text
- https://vectorcorp.net/sites/default/files/webform/resume/dofivefodazewinewes.pdfIn PDF document text
- https://www.enwidth.com/sites/default/files/webform/resumes/17232120942.pdfIn PDF document text
- https://ambrose.edu/sites/default/files/webform/mamak.pdfIn PDF document text
- https://www.enwidth.com/sites/default/files/webform/resumes/wefegazeketalewawer.pdfIn PDF document text
- http://www.pacificsportfraservalley.com/sites/default/files/webform/zajufofagobixipisuna.pdfIn PDF document text
- http://russian-ice-spb.ru/sites/default/files/webform/files/42282539280.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/~3/3vuEKuznOb8/uplcv?utm_term=ccna+voice+arabic+pdfPDF link annotation
- https://printandmail.princeton.edu/system/files/webform/zupedofijemurak.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_off0000c78c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC78C	5044 bytes
SHA-256: `02f923eafdba385f970ad23ebb96a32f9e7ee53c854c435d73b214fd151486e4`
`font_01_sfnt_off0000d8c6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD8C6	10836 bytes
SHA-256: `9410e4331ff5f726627918e33b53afadf34edc98e08899d831b2a987693b6e4b`

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