PDF malware analysis — malicious · c4029a84ee05a9fe

MALICIOUS

PDF

42.4 KB Created: 2020-10-31 04:13:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 32cefa3890cd6a0b4dbecf5a3766992b SHA-1: 01e4222f70feb8d08dbbe6f10a07b6dec6b378a6 SHA-256: c4029a84ee05a9fe6a11fc4b98a84583ccde98ec5092e88cc64c0cdc20a7385d

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains an embedded link that points to a known malicious redirector infrastructure. This heuristic, combined with the ML classifier's high confidence, indicates the document is designed to redirect users to a harmful destination. The document body itself is heavily obfuscated and contains the malicious URL, suggesting an attempt to disguise its true purpose.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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/aws?keyword=snoqualmie+valley+trail+map In PDF document text
- https://radigaligoled.weebly.com/uploads/1/3/4/3/134333621/a5adb74f7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387036/normal_5f8dc36a39ee5.pdfIn PDF document text
- https://funudenor.weebly.com/uploads/1/3/4/3/134319253/5726544.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/fedufiporara/activity_based_learning.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/2334/9938/files/lenijipuromubolupu.pdfIn PDF document text
- https://s3.amazonaws.com/memul/delodosidufavogepirijar.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a93c8ba5-0116-4eb7-bed0-b75ee0d37cfe/61090911642.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/4916/2654/files/zomowegarelexa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0477/3442/3708/files/introduction_to_development_studies_lecture_notes.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/20255c60-1bd3-432b-9bfc-2e9c742c231f/little_red_cap_carol_ann_duffy.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_off00006747.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6747	5180 bytes
SHA-256: `4aa1a8a0bd05f99bdf92e1f572bacf193a281ebf46aded012e9f89479e561f87`
`font_01_sfnt_off000078e3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x78E3	10540 bytes
SHA-256: `88608d2afd11ffce56e202c15d1a728db96418358082e60cc0c7f0008db14b66`

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