PDF malware analysis — malicious · 6ddad45f435b5613

MALICIOUS

PDF

68.2 KB Created: 2020-12-03 21:46:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 4866123872e33095249e4fb4484b00d3 SHA-1: 98afd7149f81ac64576f851f3fa4838e72e8f534 SHA-256: 6ddad45f435b5613203b2609989d434cdd4b42a01ef0b215c8bc5ca37b4a03f4

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://ggtraff.ru/strik?utm_term=ibclc+exam+2016 In PDF document text
- https://cdn-cms.f-static.net/uploads/4384634/normal_5f90bf505d7df.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413703/normal_5f9834771f789.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/bezorito/nike_trainers_size_guide.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/49390785-3031-41cf-bb0d-ac09e10ce715/17074905876.pdfIn PDF document text
- https://s3.amazonaws.com/gorajikunobixi/ap_language_and_composition_exam_vocabulary.pdfIn PDF document text
- https://s3.amazonaws.com/wofaxil/art_contests_2020_free_entry.pdfIn PDF document text
- https://s3.amazonaws.com/lolijexejomak/railway_reservation_form_english.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b3e170db-5d34-479f-8745-fc4391d824ad/circles_radius_diameter_and_circumfe.pdfIn PDF document text
- https://s3.amazonaws.com/tifuwuw/26434230369.pdfIn PDF document text
- https://s3.amazonaws.com/pokorevalaxex/dekeribanabawanafad.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_off0000cebb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCEBB	5296 bytes
SHA-256: `1a8d9f4928f3e2880a69f6b8172b0ad56822e2ebdcc9f9526db8a729e7cd1ea2`
`font_01_sfnt_off0000e0bc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE0BC	10708 bytes
SHA-256: `7624020a40ae3c772b4bbb1d26330787f0212374bfbd1aa9ddd97fba4a41893a`

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