PDF malware analysis — malicious · a07f35d6d380a24b

MALICIOUS

PDF

64.0 KB Created: 2020-11-18 17:36:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: 1c1a0371be98bfc843c243c241d7bd37 SHA-1: 0b0eca1b766ffec1c45e6651eb43f958f46f871f SHA-256: a07f35d6d380a24bc241e44c55b3b5eeb7db22d6bd04a16b098f28be573525fe

76 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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?utm_term=mystic+lake+montana+snow+report PDF link annotation
- https://cdn-cms.f-static.net/uploads/4457272/normal_5fb4c9f5695a6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373505/normal_5f8d71c223298.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4404755/normal_5f92b5fb9be44.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369775/normal_5fb42ae6587ad.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366973/normal_5f882fc5d9952.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412378/normal_5fa79f7af2c38.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4414501/normal_5f98255632d61.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/rokuwapesu/naxarunidazusi.pdfIn PDF document text
- https://s3.amazonaws.com/gofilafixu/8250876683.pdfIn PDF document text
- https://s3.amazonaws.com/henghuili-files2/verb_to_be_affirmative_negative_interrogative.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4d7205e2-f19b-41b7-b231-bafed22c2c94/zipupuzeju.pdfIn PDF document text
- https://s3.amazonaws.com/memul/asking_and_answering_questions_3rd_grade_worksheet.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_off0000bba0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBBA0	5344 bytes
SHA-256: `0521ced75a5c0d6371fe1e3d8e0bf3f2df84742408a48cc7f1c81b1cde2c05db`
`font_01_sfnt_off0000cdde.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCDDE	11028 bytes
SHA-256: `905f5e6857a38bd0ed7fe36567f8561b98cbc52a761db22383a1129be99c0b9e`

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