PDF malware analysis — malicious · b90d4c8e81c5d80a

MALICIOUS

PDF

61.5 KB Created: 2020-11-30 07:24:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04

MD5: c156f43e80d369e71df6c5e529e1d176 SHA-1: d5dcc54c26ac5bbfb284218aa88224e04e686ee5 SHA-256: b90d4c8e81c5d80ab0af4a4c6f135466e438a3334be91d487140405d32269102

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 0.9996

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://trafficel.ru/strik?utm_term=ever+after+high+secret+hearts+diary+video PDF link annotation
- https://cdn-cms.f-static.net/uploads/4403266/normal_5f9f7fb093baa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4384483/normal_5faf5c0d45610.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380084/normal_5f902fed66ebc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365601/normal_5fb8c46442922.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368467/normal_5f9c48c3cf2d4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366337/normal_5fb447bf38298.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/08afb3bf-2fa8-4b88-9398-46a61374360a/elephant_digestion_worksheet_answers.pdfIn PDF document text
- https://s3.amazonaws.com/kesumasaka/64528552368.pdfIn PDF document text
- https://s3.amazonaws.com/jozetej/todezijelamirorumop.pdfIn PDF document text
- https://s3.amazonaws.com/fedure/clerk_of_works_report_format.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1c9da51a-9ca6-4567-8b50-64b789a3fbb8/guxabazulizenebe.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/20839e3e-9930-49b2-be16-85f2fd29307e/iastoricon._exe_error.pdfIn PDF document text
- https://s3.amazonaws.com/pajukovuxetu/65614199664.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_off0000b3a3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB3A3	5372 bytes
SHA-256: `b0df7107eceb67c0cb393b0e7a49a043aa62403793ef704791c9101161f2a4ef`
`font_01_sfnt_off0000c5fa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC5FA	10484 bytes
SHA-256: `0a9fe1fc1765af5f310f254ac548fbc24b95ece3935ea96af45388983b7fc479`

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