PDF malware analysis — malicious · d8d70682a96da377

MALICIOUS

PDF

64.5 KB Created: 2020-12-22 04:03:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 1cf210ccf5adefce49ee204a3ca9a60e SHA-1: ea927dc53e4cfcfbc09365141bf246690a61214c SHA-256: d8d70682a96da3773fc8ce52102d8a6d6ed0d998f0fb2cfc07ec671a68cd86a0

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, indicating a phishing attempt. The embedded URL is obfuscated within the document's structure, suggesting an attempt to disguise its malicious nature. The ML classifier and ClamAV detection strongly support the malicious classification.

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://cctraff.ru/strik?utm_term=saitama+training+program In PDF document text
- https://cdn-cms.f-static.net/uploads/4456999/normal_5fad8e9e2b193.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373519/normal_5f9dc439e268b.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4503390/normal_5fc9dccbef185.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4528876/normal_5fc6cc043626c.pdfIn PDF document text
- https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/linuxobogo.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/dazovosugev/sitebogoz.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/18592f3c-e259-495e-a980-1468e8c8ebf2/classic_wow_pet_attack_macro.pdfIn PDF document text
- https://s3.amazonaws.com/salosibejodod/fefaradibonujuvipa.pdfIn PDF document text
- https://s3.amazonaws.com/bifamomove/677058274.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_off0000c432.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC432	5032 bytes
SHA-256: `444e183898e6b296bd34c900526be31698c4d0e83955b1a1782658ea1fcf4b48`
`font_01_sfnt_off0000d537.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD537	9608 bytes
SHA-256: `a869efb77b286ebb055bf1dacda31a9a0da0dc6ae22f5f1783ba3752fa324b10`

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