PDF malware analysis — malicious · be4a28fa08942098

MALICIOUS

PDF

61.9 KB Created: 2020-11-08 06:16:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: 8df4ffbe9f961371caa91726e84f5dcf SHA-1: b7389255b9dc9e8d41c883edbab690459fb847c7 SHA-256: be4a28fa08942098af147789474345ab746fb1162cdbcfe66063d10fecc20041

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://trafffi.ru/aws?keyword=megaboost+pro+series+4000+manual PDF link annotation
- https://gulijigomun.weebly.com/uploads/1/3/4/3/134350957/562f8cf2db05.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4419644/normal_5f9bfec3cc8d3.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/42f0f798-8d47-4109-9f4a-18c83876234e/assamese_dictionary_hemkosh.pdfIn PDF document text
- https://s3.amazonaws.com/ginutu/division_de_fracciones_con_mismo_denominador.pdfIn PDF document text
- https://s3.amazonaws.com/tadovu/definition_of_comparative_public_administration.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3f2a24b8-0dea-4d02-86f8-b6a0cfa255e1/52256908165.pdfIn PDF document text
- https://s3.amazonaws.com/baxekojojexusol/tv_tropes_samurai_jack_battle_through_time.pdfIn PDF document text
- https://s3.amazonaws.com/gebaxovudofe/is_psn_code_generator_legit.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c3a314a5-8a58-4ef7-a371-2ea6152dc765/83336257518.pdfIn PDF document text
- https://s3.amazonaws.com/ditiruz/centro_e_periferia.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_off0000af0e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAF0E	5516 bytes
SHA-256: `d45c36e5aaff570052389f202d08ab31cfca2306529616985ba58833860a91fe`
`font_01_sfnt_off0000c1c7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC1C7	12588 bytes
SHA-256: `796fe1be5e75b8fbfe8159cb7ce2b1e07b0c84dd7fa49328abf3190fa2242907`

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