PDF malware analysis — malicious · 83d6f4b1c5e67151

MALICIOUS

PDF

47.0 KB Created: 2020-11-09 14:27:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: 5141a80b43eeb3b8fe2eb1570055dd75 SHA-1: 3a06304b1855014e61a80357ca176510b1f3cc6d SHA-256: 83d6f4b1c5e67151d135ab02cb10b6dd54306e12f7a114af207f75e850726f07

66 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
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://trafficel.ru/123?keyword=1915+case+steam+tractor PDF link annotation
- https://cdn-cms.f-static.net/uploads/4454679/normal_5f9fb7af9a7ad.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388613/normal_5f9e002a53842.pdfIn PDF document text
- https://terarawuterojuz.weebly.com/uploads/1/3/0/7/130739827/wumilomuba_wamokoguza.pdfIn PDF document text
- https://zizuralozirufu.weebly.com/uploads/1/3/1/4/131483034/509617.pdfIn PDF document text
- https://nepubodi.weebly.com/uploads/1/3/4/6/134610278/4781842.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417207/normal_5f9b383671fc0.pdfIn PDF document text
- https://fipiwodumuxi.weebly.com/uploads/1/3/1/4/131453050/61785.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379220/normal_5f8e4dd11d509.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366029/normal_5f8727769ab8f.pdfIn PDF document text
- https://goresizusozal.weebly.com/uploads/1/3/4/5/134524816/7323335.pdfIn PDF document text
- https://vonojatu.weebly.com/uploads/1/3/4/7/134711894/zidabafuvi-redadurizij.pdfIn PDF document text
- https://dokodajibebabek.weebly.com/uploads/1/3/2/3/132302773/a3b44.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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_off00007ab2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7AB2	5148 bytes
SHA-256: `1d0f3c265a9a631ea0170792c5c6f14ff6ab23d344115038fb2a332cd882be9f`
`font_01_sfnt_off00008c28.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C28	10352 bytes
SHA-256: `da9c3cbae657d89cfe867f4636742eacbbe31ab2d464d20dc7176dd22c5efd63`

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