PDF malware analysis — malicious · 65342585173ba7de

MALICIOUS

PDF

84.5 KB Created: 2021-01-03 23:30:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11

MD5: fabcfdfe00f70b631dc6a265f9e16721 SHA-1: 1ba77f8149a391e47aa2db0db9a90743d0a91338 SHA-256: 65342585173ba7de0d1b8c6bca05607404871996890eb252397b6c5deae9f614

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://trafficel.ru/123?utm_term=four+of+a+kind+in+cribbage+points', which is a strong indicator of a phishing or malware distribution attempt. The document body, though heavily obfuscated, suggests a lure related to 'cribbage points', likely a pretext to disguise the malicious link.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://trafficel.ru/123?utm_term=four+of+a+kind+in+cribbage+points PDF link annotation
- https://cdn-cms.f-static.net/uploads/4407313/normal_5fda3b21bf653.pdfIn PDF document text
- https://cdn.sqhk.co/vojogalu/jczidYt/weather_underground_app_for_windows_10.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4483089/normal_5feb00432d7bb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412382/normal_5f9523d7de7bf.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4459785/normal_5ff0c118dd891.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/julexekubaj/21529051315.pdfIn PDF document text
- https://s3.amazonaws.com/susopuzupure/lipid_profile_file.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e68c45b8-adf0-4162-b3b1-9251325f8675/google_chrome_failed_network_error.pdfIn PDF document text
- https://s3.amazonaws.com/jezaxojipevu/short_functional_text.pdfIn PDF document text
- https://s3.amazonaws.com/susopuzupure/92398541101.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_off00010ecd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10ECD	5452 bytes
SHA-256: `f7547274d6581084a4f0df50bd066edb7237698485dee0ff3ea9f44d210416de`
`font_01_sfnt_off00012167.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12167	10456 bytes
SHA-256: `006f3492c7c015b0c170691876c08ce6bccf5ff6869fe67ac7c469fa353f3b31`

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