PDF malware analysis — malicious · e6aaf4b74fae9498

MALICIOUS

PDF

36.9 KB Created: 2020-11-07 04:16:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: 6aa4076644cc1a4ee6664b52fa6e2287 SHA-1: 03cef287ccb1de66b797688bfc5e2e4af2b1561e SHA-256: e6aaf4b74fae949889879870a851c046930e441a0e699556a5ee5fa3c285c0b7

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://trafffe.ru/aws?keyword=stellarium+user+guide PDF link annotation
- https://cdn-cms.f-static.net/uploads/4410459/normal_5fa42db498a75.pdfIn PDF document text
- https://pepisukuwen.weebly.com/uploads/1/3/1/6/131606293/5683756.pdfIn PDF document text
- https://rebeluzibefu.weebly.com/uploads/1/3/4/6/134619862/76a7bc51d53.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369933/normal_5f9988bc258f3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369336/normal_5f89b3fdb5200.pdfIn PDF document text
- https://wetolobumusu.weebly.com/uploads/1/3/4/5/134579125/xenebo_kakut_sipejumetijetef.pdfIn PDF document text
- https://rofexigu.weebly.com/uploads/1/3/0/7/130738805/eb251.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379219/normal_5f98f65a51126.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://s3.amazonaws.com/gedimuta/16338642589.pdfIn PDF document text
- https://s3.amazonaws.com/wilugugo/27481639662.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000046ea.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x46EA	4916 bytes
SHA-256: `b08998e9d52dad14ba5814da32656e40e05647a6d510d25821ab5f0601d0c1a4`
`font_01_sfnt_off00005791.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5791	9868 bytes
SHA-256: `7549a6a72cd62a36f9d11f4ffa680c97cb2e2a59d6ab38657d5f095d04044c11`
`font_02_sfnt_off00007967.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7967	4324 bytes
SHA-256: `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`

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