PDF malware analysis — malicious · 9304b78ee1cd413f

MALICIOUS

PDF

35.7 KB Created: 2020-11-09 08:10:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: 941bcd73a84fac4f445d018c9bd9f2e6 SHA-1: 3234b59169555c39a31d6f315ad373454fb7164e SHA-256: 9304b78ee1cd413fd9f274c61ae9ffe93abcbeb2c1a5e19ebfad10c78fce721a

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=just+dance+youtube+videos PDF link annotation
- https://cdn-cms.f-static.net/uploads/4380210/normal_5f8fd29e5e969.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4419413/normal_5f9aca2a910ef.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375200/normal_5f9c5766b102e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408865/normal_5f94ea56d7a65.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369508/normal_5f8beddfe05be.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4401696/normal_5fa248c436379.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/mozirolinitaje/68616384813.pdfIn PDF document text
- https://nuvinifiraf.files.wordpress.com/2020/11/mogofemejakowemuz.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2d3052bc-0fcb-4428-baac-084a4c575362/writing_systems_of_equations_worksheet.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/77eb7e12-8123-4917-b55c-5dac5fff9ebb/unblocked_games_bmx_park.pdfIn PDF document text
- https://s3.amazonaws.com/tagorarib/ece_2020_osu_reddit.pdfIn PDF document text
- https://s3.amazonaws.com/damerirazib/avant-_garde_and_kitsch.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_off00004c7c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4C7C	5096 bytes
SHA-256: `77ad51608f7f607f2b72513808e0537f32f75e635a746bc18fc6f4a6461049b3`
`font_01_sfnt_off00005dee.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5DEE	10576 bytes
SHA-256: `ad8c5e7d1655d1097e1987cc682785d34401fff61748965633e0a8cdaff9a7fa`

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