PDF malware analysis — malicious · 58b6b1c9145d3479

MALICIOUS

PDF

40.5 KB Created: 2020-11-09 00:22:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: 7843d268b6e78d2997cdc016e95ca701 SHA-1: 4256a35e3febbe123f7ccc520c700cd177f40892 SHA-256: 58b6b1c9145d3479f7cd5e97c955a907986ea6f312358bb1cbca711dbe53e195

76 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
External URI info PDF_URI

PDF contains an external URL action
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://trafftec.ru/123?keyword=phim+tvb+moi+2016 PDF link annotation
- https://cdn-cms.f-static.net/uploads/4410954/normal_5f980dce40fa0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380883/normal_5f8f34d13410e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366017/normal_5f86fea4663fd.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373797/normal_5f8b442005804.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374700/normal_5f9ca6ad18f03.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4389794/normal_5fa86af3f28ce.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417032/normal_5fa86ad917687.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412890/normal_5fa44820bab14.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/bisegilupuf/service_manual_for_kenmore_refrigerator.pdfIn PDF document text
- https://s3.amazonaws.com/xesigeze/tuzitalafubosetewomos.pdfIn PDF document text
- https://s3.amazonaws.com/leguvefu/60875031352.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e7f3d141-6848-42f5-8b44-9eb32a8be4e9/naroti.pdfIn PDF document text
- https://s3.amazonaws.com/bubeto/26395731117.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_off000060f2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60F2	5092 bytes
SHA-256: `138cc0decdfe474c15057699b51905dc381237b3aa19a981341fe86860abe2f6`
`font_01_sfnt_off00007238.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7238	10408 bytes
SHA-256: `686329a8c9c2cd6afcb20d99e3035a2d6c7dfa38fe2b82a800a8a5f9d701b550`

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