PDF malware analysis — malicious · bef14152ca82ece3

MALICIOUS

PDF

69.3 KB Created: 2020-12-01 12:42:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04

MD5: d44552a774ff0d1b4b6ccbc4031b3dec SHA-1: 93c81f1a57f13c3c2f1d39049d9156904327a916 SHA-256: bef14152ca82ece351a74651bec4514b91ebfa7487ed6a39152313828e49dedb

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://trafffi.ru/strik?utm_term=fort+bragg+jumpmaster+refresher PDF link annotation
- https://cdn-cms.f-static.net/uploads/4453901/normal_5fbd89ad97c8f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382639/normal_5f99f9a56f70b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366360/normal_5f89185d8e6ac.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365652/normal_5f95db1962000.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365599/normal_5f89288a229d8.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/2c8775c3-c2ce-458f-a6d9-6989eb62125c/8_features_of_civilization_worksheet.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bda591e5-c12f-43b6-babb-6abed69cffb6/98732584256.pdfIn PDF document text
- https://s3.amazonaws.com/sazariwapa/chemistry_pun_worksheet.pdfIn PDF document text
- https://s3.amazonaws.com/tutapaxi/lukerateluj.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e8609d64-c8d8-4010-9af0-f9df89130e78/teacher_peer_observation_forms.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/56c64f7b-8122-427c-88be-e4e33ff54f73/mogofebaxerawujulevikaw.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_off0000d239.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD239	5456 bytes
SHA-256: `926b80afe9984fcd131a82316bb07587222524175b1f3309cd19a288830bc84f`
`font_01_sfnt_off0000e4a6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE4A6	10460 bytes
SHA-256: `719bdc0db939dc63c7a407bf3fc7baf93f2f9b2c59a3a5cc46e9bf9ed49dec46`

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