PDF malware analysis — malicious · 1c15283a8f9af879

MALICIOUS

PDF

57.0 KB Created: 2020-10-15 14:16:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10

MD5: cb050fb009a6279468c6431f665b18c8 SHA-1: e0019f8c4e80d6d02be0a0f309769dad4b591da8 SHA-256: 1c15283a8f9af879dc27c7b42ebbdc0f0bc6d182da00f1baaf17d3f578420322

184 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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://cctraff.ru/123?keyword=chinese+massage+tui+na+pdf In PDF document text
- https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/rapubobibusa.pdfIn PDF document text
- https://site-1037054.mozfiles.com/files/1037054/21586034446.pdfIn PDF document text
- https://site-1043976.mozfiles.com/files/1043976/kivekejeximelumaleve.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366017/normal_5f877bdf3ea07.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366305/normal_5f873aaa61700.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367283/normal_5f8756fb7dc28.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366034/normal_5f8704a03313a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365626/normal_5f882d9e6134b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368493/normal_5f87b4d77ddb9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366000/normal_5f870f9bf0710.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366017/normal_5f870c352e942.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367273/normal_5f8746142bdf8.pdfIn PDF document text
- https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/646693.pdfIn PDF document text
- https://redunexodozik.weebly.com/uploads/1/3/0/8/130814050/silugituxaw_kigosafum_lokizijinase.pdfIn PDF document text
- https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/kojurufilufopimob.pdfIn PDF document text
- https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/8347111.pdfIn PDF document text
- https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/f5d445.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://uploads.strikinglycdn.com/files/006606e6-a369-4ea8-93be-6a69d2f533cd/37222753949.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7d587581-c631-4d10-b7a0-6a673fba48b5/mejavedun.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0a737e2c-cf01-4f83-a0b2-5aadcf1c3f15/zexebigutudamolaneburijof.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/127c2a4b-a79b-4d5c-a981-03761a4448fc/79138269853.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000850a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x850A	3432 bytes
SHA-256: `e939a45ec0b2a8b3348c21fdd9ce670e97a8f45c6711473637d67fc822e894c0`
`font_01_sfnt_off00009140.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9140	5124 bytes
SHA-256: `ab4e91d21aa71f74344572a0ed2d3ab20a6f466fed038a79024313634d9726bf`
`font_02_sfnt_off0000a27e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA27E	11568 bytes
SHA-256: `7437a9c3afbce715de4de038cbcb829320c2e9e1da5ae099886cc773e6d9af9d`
`font_03_sfnt_off0000c79e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC79E	4324 bytes
SHA-256: `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`

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