PDF malware analysis — malicious · 834bc56a43f7bb43

MALICIOUS

PDF

65.7 KB Created: 2020-12-27 06:53:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 31339c1ea42bd0a62b3dd71a04b8b6ba SHA-1: ed031c18b37da581e4d07260f1561da32ac58e4a SHA-256: 834bc56a43f7bb43bef378633493cef30b88aaebdc197452d307773a3081af30

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs pointing to known malicious redirectors and other suspicious domains, indicating an attempt to lead the user to a malicious site. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware delivery attempt, likely initiated via spearphishing.

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://traffmen.ru/strik?utm_term=wonder+pets+save+the+puppy+pc In PDF document text
- https://tixowofo.weebly.com/uploads/1/3/4/5/134592641/wezeno.pdfIn PDF document text
- https://cdn.sqhk.co/begorukenega/NLZPiic/26688402611.pdfIn PDF document text
- https://cdn.sqhk.co/kupovite/idyihii/blooms_today_login.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4490757/normal_5fc6768b9c11c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4420438/normal_5fb65cf10e6a7.pdfIn PDF document text
- https://vawuzusafut.weebly.com/uploads/1/3/4/8/134863851/16a3a0b45.pdfIn PDF document text
- https://pixamowogiru.weebly.com/uploads/1/3/4/5/134590731/zefitopogeba_wimiwazapiwov.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/tiduro/antoinette_pettyjohn_death.pdfIn PDF document text
- https://s3.amazonaws.com/mipizaju/97722857545.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_off0000c4d3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC4D3	5304 bytes
SHA-256: `510fb66257e331144610868311d4142f3c0ca120c1e91e785d5b1e7560cd0ac9`
`font_01_sfnt_off0000d6ed.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD6ED	10364 bytes
SHA-256: `ca63239510a451c536797cc27ab056950800130217cde579c11d68b35243919e`

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