PDF malware analysis — malicious · 20667f6e5901d20c

MALICIOUS

PDF

42.0 KB Created: 2020-10-15 03:02:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10

MD5: 0075140d501d704e0a6cc5f4fb419232 SHA-1: ee6860321a5604dd8a63a895d7a094683d0d4e40 SHA-256: 20667f6e5901d20cc27f180b3b691558c80e76c829d764aedccdf1a5b79c9a95

124 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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://ttraff.com/pify?keyword=download+powerpoint+to+pdf+converter In PDF document text
- https://cdn-cms.f-static.net/uploads/4365551/normal_5f8736d87f6fb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366369/normal_5f876a115642f.pdfIn PDF document text
- https://site-1040559.mozfiles.com/files/1040559/37143264367.pdfIn PDF document text
- https://site-1048486.mozfiles.com/files/1048486/84393519323.pdfIn PDF document text
- https://site-1039749.mozfiles.com/files/1039749/19939675227.pdfIn PDF document text
- https://site-1042419.mozfiles.com/files/1042419/gusutomoxemukazu.pdfIn PDF document text
- https://site-1044294.mozfiles.com/files/1044294/bepuxazu.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3049/4878/files/68799181080.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5353/0782/files/5442769813.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/1516/6888/files/bright_beginnings_preschool.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6653/0721/files/wederolavexupol.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8258/0130/files/wimef.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/937e494c-d19a-43bd-a621-2ff204588b34/judadegivenoxojuk.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/da1143af-ac1d-4354-8c31-790542c578d0/25567935262.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d216d0d7-07ec-4711-bf0a-34df295b5150/9299883150.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/446a1a58-5200-4dc4-8d8c-3fe1cb64deef/3634983570.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6aa37baf-d69e-4c55-ac67-4b2731ce7881/23679969941.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/05f68724-fa47-4e3c-aef4-7f7efe2f6d0f/jidimav.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_off0000664a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x664A	5120 bytes
SHA-256: `0f30bd959c5dfdae1277b52a324512dcf5cb1ae421f570df6ef582738b97c56c`
`font_01_sfnt_off000077e3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x77E3	10212 bytes
SHA-256: `479e0f8b4c63a1fac73181c38d0dd3e4e54e7fe7d0b0b4feb382ce140dc3006f`

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