PDF malware analysis — malicious · 968febd0dc310332

MALICIOUS

PDF

40.1 KB Created: 2020-11-07 08:17:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15

MD5: 4f77b00198b043bd2c38b1fa6be8fe0c SHA-1: 2d520e0b17e4aec5f494e7e16db750e6f7245e8c SHA-256: 968febd0dc3103320cc34f7fff39921d1afd605e0a7f86258deee79bbda5fb6a

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/aws?keyword=head+bang+music PDF link annotation
- https://cdn-cms.f-static.net/uploads/4413980/normal_5f948da657379.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386361/normal_5f90a7c463a69.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369161/normal_5f89d2ce01784.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366319/normal_5f872b4d3316a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366017/normal_5f8723a498ce8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372101/normal_5f93c29630164.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://suvarofora.files.wordpress.com/2020/11/lodebukiworidu.pdfIn PDF document text
- https://s3.amazonaws.com/fasanag/applied_science_book_for_diploma_in_karnataka.pdfIn PDF document text
- https://s3.amazonaws.com/remufuzu/diego_brando_alternate_universe_quotes.pdfIn PDF document text
- https://pagatuj.files.wordpress.com/2020/11/56468934770.pdfIn PDF document text
- https://sifuwel.files.wordpress.com/2020/11/problemario_escolar_trillas_4_gratis.pdfIn PDF document text
- https://ludepofode.files.wordpress.com/2020/11/manual_photoscape_v3.7.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_off00005f4e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F4E	5232 bytes
SHA-256: `e9f961a78a2c3b48dff3a1a436cbe55b6cb2b73cb286c0caaec34d8200eb1fa9`
`font_01_sfnt_off00007107.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7107	10316 bytes
SHA-256: `354b48a53e06a27dc978ff985efac410b32a7148a1e58e6243752ece5ec10ee3`

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