PDF malware analysis — malicious · 43e378c773884250

MALICIOUS

PDF

40.0 KB Created: 2020-11-09 00:49:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15

MD5: c6a9473222517e4a6eebe25d3c404179 SHA-1: 22d480a1ccdf07f74e8a71a0bc8b84c244833921 SHA-256: 43e378c77388425020e1c651e02a402e2c0bb6d06a73e794a4a6e14366c6ba77

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://traffset.ru/123?keyword=msn+outlook+office+skype+bing+breaking+news PDF link annotation
- https://cdn-cms.f-static.net/uploads/4420244/normal_5fa6916ba0257.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4476954/normal_5fa86e74c2bee.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383451/normal_5f93bbe73c0f8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381539/normal_5f8be0dfec241.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417815/normal_5f9e06cda9688.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4447085/normal_5fa823253cf2b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387581/normal_5f914e869f1aa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421210/normal_5fa0d484baffc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366027/normal_5f8865d423f9d.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/levumoduf/tay_shoe_repair.pdfIn PDF document text
- https://s3.amazonaws.com/sifawekujiki/nudozamexuxovozofuriwifu.pdfIn PDF document text
- https://s3.amazonaws.com/vebogotexaf/rasufegenapazuvudoto.pdfIn PDF document text
- https://s3.amazonaws.com/xunilukegez/57726971837.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_off00004cda.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4CDA	5468 bytes
SHA-256: `ebbe48a3710dfe169a0fe46931d8f771426adae3cb2b7ee61f2ab4980d5e17b4`
`font_01_sfnt_off00005fa6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FA6	10804 bytes
SHA-256: `14d6d2448eca50aa6262ee1a93d766d86a1b1007f7871558b238e64171dd95a8`
`font_02_sfnt_off00008344.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8344	4324 bytes
SHA-256: `ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230`

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