PDF malware analysis — malicious · d1c31c6f8c6c3620

MALICIOUS

PDF

40.0 KB Created: 2020-11-07 11:21:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01

MD5: 2c30ccdeb8412cffcc78e02b7863bdc9 SHA-1: 01144e901d00b8505f19840121933ba477be93db SHA-256: d1c31c6f8c6c3620e7bb3f1c0e1624de8146e3c097fb992f56b6a0453199d8e7

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=cnc+linear+guide+rail PDF link annotation
- https://cdn-cms.f-static.net/uploads/4407562/normal_5f999de92b11e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369629/normal_5f93ce64d3745.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385216/normal_5fa123094bd3f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368219/normal_5f8dd5cbac85a.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://sedinewo.files.wordpress.com/2020/11/thermodynamics_chemistry_notes_class_11.pdfIn PDF document text
- https://tobaluli.files.wordpress.com/2020/11/9883016763.pdfIn PDF document text
- https://rolotoba.files.wordpress.com/2020/11/ganoton.pdfIn PDF document text
- https://s3.amazonaws.com/povodijirig/glory_field_study_guide.pdfIn PDF document text
- https://s3.amazonaws.com/kudefem/skyre_main.esp_download.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b4745248-307b-4e29-a743-d753799e4390/judozesozogolujuno.pdfIn PDF document text
- https://ronesifipule.files.wordpress.com/2020/11/pasefojowabe.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e8f4893b-a555-440e-abbb-0bf8b920d6e0/xurojavalosonoduwuxabeb.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_off000061cf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61CF	4832 bytes
SHA-256: `2ad5387262562555a6b5888eb37df02fd8ba6a17b2d8aa3339e1f972fef8bafb`
`font_01_sfnt_off00007245.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7245	9656 bytes
SHA-256: `5df9ff23b4bc5214bc79ce82572fa74bb523183701a3ee2a109787af534e8f8b`

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