PDF malware analysis — malicious · 87a2367bfb7999c9

MALICIOUS

PDF

66.3 KB Created: 2020-11-26 18:12:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 9ec1802c449bdb6a687be0dbbdb5954c SHA-1: 19975d08f477149fba5389694014e30d8abe814b SHA-256: 87a2367bfb7999c97216f2518fa808f048883fc0d1a4d713676dfa6f65f7ff9c

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 'https://traffking.ru/123?utm_term=dominic+janes+today'. Additionally, ClamAV detected the file as 'Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0'. The ML classifier also flagged this PDF with a high probability of being malicious. The presence of these indicators strongly suggests a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9883

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://traffking.ru/123?utm_term=dominic+janes+today In PDF document text
- https://cdn-cms.f-static.net/uploads/4365638/normal_5f8703ddbaaf3.pdfIn PDF document text
- https://nibuwoxemunovox.weebly.com/uploads/1/3/4/7/134714338/fodivubune-xisoranerasole.pdfIn PDF document text
- https://zemaxixose.weebly.com/uploads/1/3/4/6/134636511/6c347e23397.pdfIn PDF document text
- https://beluloxepivizor.weebly.com/uploads/1/3/4/1/134131295/molopi-repakeji-muxirevoguribeg.pdfIn PDF document text
- https://sikewebuki.weebly.com/uploads/1/3/4/3/134387003/lejususa.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/xanunafojuloki/3292488879.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/242a6a47-ae3a-47cb-a69c-a3235d975630/40673148984.pdfIn PDF document text
- https://s3.amazonaws.com/meludav/lijubajanel.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_off0000c8a7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC8A7	5132 bytes
SHA-256: `90f28a7e24caf059a5e0bd30d17ce526cbcbc99a60d0532ef969ea75337a9847`
`font_01_sfnt_off0000da1d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDA1D	10420 bytes
SHA-256: `af11ea53279c2538faf9eff37d4f306c7131c3dac387785e638343df6e9fe5d2`

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