PDF malware analysis — malicious · 7bbf0b6cdf4080b4

MALICIOUS

PDF

50.2 KB Created: 2020-11-08 17:12:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23

MD5: 60aab1bf6e1356db05c3567056c2c9d0 SHA-1: edea705e6ba0eb3b14f116c3cce26d8c1b9baa6c SHA-256: 7bbf0b6cdf4080b4b5db6f2a3a3bec99b7dd483d65eb8303bacac58ae67a5b9b

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/123?keyword=balancing+chemical+equations+worksheet+2+key PDF link annotation
- https://cdn-cms.f-static.net/uploads/4367301/normal_5f886393a74f2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369660/normal_5f8b5045453b6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372753/normal_5f9c016a094a7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375525/normal_5fa46662f2a69.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/sesafefanulokam/moultrie_a20_camera_manual.pdfIn PDF document text
- https://s3.amazonaws.com/jimugivos/pdf_editor_to_word_converter_free_download.pdfIn PDF document text
- https://s3.amazonaws.com/zibenoroduzuw/facets_application_software.pdfIn PDF document text
- https://s3.amazonaws.com/purawuma/18802898600.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5cff3b1b-ffbc-4b7e-9ef3-c7f50face314/sharepoint_designer_2013_tutorial.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/112a2a2c-4178-495a-a388-1cdd87683d86/gozub.pdfIn PDF document text
- https://gefonan.files.wordpress.com/2020/11/48781763133.pdfIn PDF document text
- https://s3.amazonaws.com/nupotukig/visujusikenutavejajudeje.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_off000083d2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83D2	5776 bytes
SHA-256: `f8a4906ff390a268856967da483499526c26158685eff8d31097cbca91b535b8`
`font_01_sfnt_off00009768.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9768	10644 bytes
SHA-256: `c977295953b0a4b495844b9825bfb927d715ed56dc601e741a59ee3a1162072d`

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