PDF malware analysis — malicious · b46f491eb769477f

MALICIOUS

PDF

65.5 KB Created: 2020-11-11 07:55:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01

MD5: 14cab456d07aa35b255e4c0c2feb028c SHA-1: b73c2da7c9140ce7fb74e25e55897cca55b1b731 SHA-256: b46f491eb769477f645ff3467a75387ce6a4ca54cadea0521b75927b2117cd9b

136 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9979

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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/strik?keyword=san+diego+jmun PDF link annotation
- https://cdn-cms.f-static.net/uploads/4425926/normal_5fa4262916a68.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4448556/normal_5fa7afadd5826.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375525/normal_5f8a9d4330e50.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374852/normal_5f9cf6b6111cb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454678/normal_5fa7eb2893a8d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369922/normal_5fa6c572e7b2a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369306/normal_5f88073994083.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/fizufapu/minecraft_witchery_demonic_contract.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4fce6c4d-e593-4fe5-945d-6769713ec2dc/78591868643.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_off0000c259.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC259	5016 bytes
SHA-256: `01fe21ffa67c03dff361627bf4339252c4a8486ab4b80886235703846068e1ca`
`font_01_sfnt_off0000d362.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD362	11476 bytes
SHA-256: `06f929d33efa3fab7e8fcbb02bf039c464e7fe76d521e4b048ced68fa62cf7b1`

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