PDF malware analysis — malicious · a39c641976db9c65

MALICIOUS

PDF

66.7 KB Created: 2020-11-19 09:50:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02

MD5: 66b44c23b6882bf8cb003b7ec1327bff SHA-1: dc6047977117b3179a9b5d71efc13838a789ecf0 SHA-256: a39c641976db9c65ebd5b04c16f8df181daa64055d5cbc7753a78c090266220c

154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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://cctraff.ru/strik?utm_term=james+bond+novels+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4411683/normal_5f996b0becbca.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/6459f650-f498-446a-962e-b0e742eafdd2/62089076964.pdfIn PDF document text
- https://s3.amazonaws.com/sukedil/99645330151.pdfIn PDF document text
- https://s3.amazonaws.com/duzexefemosaxe/kifaketoli.pdfIn PDF document text
- https://s3.amazonaws.com/jivuxo/god_wars_future_past_trophy_guide.pdfIn PDF document text
- https://s3.amazonaws.com/tuxexi/millard_south_basketball_schedule.pdfIn PDF document text
- https://s3.amazonaws.com/dazifozixawus/attivit_aerobica_e_anaerobica.pdfIn PDF document text
- https://s3.amazonaws.com/kakekojezutok/cset_general_science_215_study_guide.pdfIn PDF document text
- https://s3.amazonaws.com/kisimujuk/puzuturukofub.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d0ed871e-a082-46c9-8374-f45c5408f456/7485478186.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_off0000c923.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC923	5280 bytes
SHA-256: `f11acaeb5059b31259d81aeca6a9f0b795c830c7682c9143f68d5f5eb8686192`
`font_01_sfnt_off0000db0f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDB0F	10364 bytes
SHA-256: `ab2b9aafa25940011edef94805e3e820d1c9cd6171bcc65c81b7d51d76783067`

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