PDF malware analysis — malicious · 77ee36f45e30b41b

MALICIOUS

PDF

63.9 KB Created: 2020-12-11 20:09:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 5d0178909b78f1202631d07f85787710 SHA-1: 16f17219caa9ba5cd4312599a805d6c131d96c82 SHA-256: 77ee36f45e30b41be8a911f2a25890c731e13441fcce7038df4d76f9f918a063

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. This indicates an attempt to lure the user to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient to infer a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9979

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=2017+jetta+repair+manual In PDF document text
- https://cdn-cms.f-static.net/uploads/4375353/normal_5f9fdb2445805.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4446494/normal_5fa1e69a71e6d.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4366408/normal_5fcef8d636d5e.pdfIn PDF document text
- https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/xijebufupuruxux_xobufal_vavibur_rezuraxu.pdfIn PDF document text
- https://zebazowis.weebly.com/uploads/1/3/4/3/134310266/derux-dibatanusaxu.pdfIn PDF document text
- https://gomemetunugup.weebly.com/uploads/1/3/2/7/132712315/9661057.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/dikobepibelun/vorimigado.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/34bc2e0f-6214-4319-aa30-5238d6a282bd/bobobut.pdfIn PDF document text
- https://s3.amazonaws.com/gawabog/17842256853.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_off0000bdb1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBDB1	5172 bytes
SHA-256: `8823088e1b26137368df090283fa380bc769941d252959963ab11ff7cd764e23`
`font_01_sfnt_off0000cf3c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCF3C	10628 bytes
SHA-256: `c90895bfab7b50a4fdcec85309d96f0e84a38cdaefed8a40a4f054ac849381cd`

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