PDF malware analysis — malicious · a2db8f62bb5b16df

MALICIOUS

PDF

37.3 KB Created: 2020-11-06 03:45:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15

MD5: 0c4ce27c7f3d638a48e019bcc31aa389 SHA-1: c81e17880b6fce32f2946fce0381e52bc0a7a022 SHA-256: a2db8f62bb5b16df2637643a80ec57616fd0d37ab0eedd5f8197c80ff245d749

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=fort+building+unblocked+games+66 PDF link annotation
- https://cdn-cms.f-static.net/uploads/4383806/normal_5f908c5b065b2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367273/normal_5f9ad6580b583.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408992/normal_5f965f33d48cc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383568/normal_5f92b734cbc14.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393644/normal_5f906bc9a8719.pdfIn PDF document text
- https://xagixuruzetel.weebly.com/uploads/1/3/4/3/134319769/6836559.pdfIn PDF document text
- https://razomidubijime.weebly.com/uploads/1/3/4/3/134395635/mupizubo-voxozedorevu-jemewarum-wutamejorid.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367302/normal_5f87657687621.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/57bbce49-2fc9-433c-b06d-42b4b09c8390/40922072970.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bd9307d8-64da-4e22-b91b-6f9f81fa85fc/xowadufod.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3e2ff1e8-c85b-42a2-b582-2c7e5137b023/wilesejitedegu.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_off00005360.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5360	5572 bytes
SHA-256: `f4b907d5c7c3143cbfbd3d23df45e36f369023e1bfac8fbff1a0e4c3b8f5cfc8`
`font_01_sfnt_off00006642.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6642	10088 bytes
SHA-256: `956fd1b25bba0b6f3d9bfd8f75a85c48c47bc3ba12fb3bb0377457778f55ed99`

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