PDF malware analysis — malicious · d730b4d95be3cc56

MALICIOUS

PDF

60.7 KB Created: 2020-11-11 05:25:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 3bed079d97b001e3a861281d5662751d SHA-1: 2f7b47aef561a82ff630045edb62fcf8345b9156 SHA-256: d730b4d95be3cc568f3257025fa82146e6f6c725102f584e603b1a25bef748e2

136 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a password-protected-archive lure. 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 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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://traffset.ru/123?keyword=super+mario+flash+1 PDF link annotation
- https://cdn-cms.f-static.net/uploads/4365639/normal_5f871147ae901.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4447108/normal_5fa508d571820.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/0752f3a9-d60b-4725-a469-2f851da564e5/ccna_2_rse_practice_skills_assessment.pdfIn PDF document text
- https://s3.amazonaws.com/dusubonifu/20968952679.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ad9af31f-fcb5-4142-aa33-a7cf8362afc6/sasikaveg.pdfIn PDF document text
- https://s3.amazonaws.com/zurovajij/aparejo_potencial.pdfIn PDF document text
- https://s3.amazonaws.com/pazovugal/48671078567.pdfIn PDF document text
- https://s3.amazonaws.com/lodazojamuva/happy_eid_mubarak_2020_images.pdfIn PDF document text
- https://s3.amazonaws.com/vibove/jutugigufoxegezafijaf.pdfIn PDF document text
- https://s3.amazonaws.com/tadovu/74209056670.pdfIn PDF document text
- https://s3.amazonaws.com/sasufufa/25943944455.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_off0000b331.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB331	5296 bytes
SHA-256: `bd6dabd709e8b3e0239482c0c54bdf6fe9e5b54a74963b372af606186c8b6525`
`font_01_sfnt_off0000c50a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC50A	9892 bytes
SHA-256: `3071738f07c4ef5778da13971382edbeb2695b2b2b240198872750df68c0118b`

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