PDF malware analysis — malicious · 8c3c822dc1e7d99b

MALICIOUS

PDF

65.9 KB Created: 2020-12-27 12:00:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 193ad2de2b2e9d2a2be87fd7d048214c SHA-1: efb6f01ebd282d3fc3094c28c84ce09c7566d334 SHA-256: 8c3c822dc1e7d99be532e302f40b73ede316d5fa1507354e8c413bfdd7857251

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://trafffe.ru/aws?utm_term=chemistry+chapter+8+test+review+answers PDF link annotation
- https://cdn-cms.f-static.net/uploads/4366969/normal_5f966f5b3cc9a.pdfIn PDF document text
- https://cdn.sqhk.co/zivudasexoni/US5DPrO/nexaxopugofugagawisoba.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4409107/normal_5f97d0ec35b23.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4470405/normal_5fce4f825941f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4424991/normal_5fbd2362206ac.pdfIn PDF document text
- https://cdn.sqhk.co/muvetowiripa/OvghijK/cardboard_fireplace_amazon.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/ritoma/89610774911.pdfIn PDF document text
- https://s3.amazonaws.com/gozilum/bts_quotes_love_yourself_answer.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9e590321-6a9a-4e61-b6f5-2a4567a4bd34/tawujidabenulijugowatukux.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f01d3061-42dc-45d7-aa0f-bb35039ac420/47852735933.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cd79d2f4-e918-41cf-9258-c5246e5efc99/6893053465.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_off0000c4cc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC4CC	5496 bytes
SHA-256: `9083d131a0967a2587c7c8a7a0cfcf9d672c1cff3c39c24581adb6a035c69670`
`font_01_sfnt_off0000d769.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD769	10488 bytes
SHA-256: `0820a24485f7f84f202507d835952a4b0e4b86bea51aedcc1b2ef004946193d7`

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