PDF malware analysis — malicious · da953ca94ca7bbd0

MALICIOUS

PDF

58.2 KB Created: 2020-10-26 00:03:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25

MD5: 7983a77db3a2858359f04dd8e5fe696e SHA-1: 7a1b2dbec6dd601a3a653cb943458c4473b1fba7 SHA-256: da953ca94ca7bbd0d40bb34c751ab936c91beaca6715a2fdade7b640259e9b7a

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://gettraff.ru/pify?keyword=dell+dual+monitor+stand+mds19+pdf In PDF document text
- https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/5032723.pdfIn PDF document text
- https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/kogunipigof.pdfIn PDF document text
- https://mimoberojatef.weebly.com/uploads/1/3/4/3/134316463/1902353.pdfIn PDF document text
- https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/a86ef7.pdfIn PDF document text
- https://kafaziwe.weebly.com/uploads/1/3/1/0/131070109/68eef8c4.pdfIn PDF document text
- https://bizavurodetilu.weebly.com/uploads/1/3/4/3/134391156/zojejifusem-minekepesukuxe-jixolumoneziva.pdfIn PDF document text
- https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/pejajofedaxevaw_kozadesupuke.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368226/normal_5f8f04adbd3a1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378171/normal_5f8fc4f0b8444.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381788/normal_5f92fba38dc42.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370777/normal_5f89d78ddf97d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378608/normal_5f92346288dc4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393632/normal_5f92673f62472.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367273/normal_5f925695a85ff.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366982/normal_5f89adcd88932.pdfIn PDF document text
- https://wibugosavuzatug.weebly.com/uploads/1/3/4/3/134349607/5f1d61ed.pdfIn PDF document text
- https://rolosakuzorega.weebly.com/uploads/1/3/1/3/131379035/dobibukowali.pdfIn PDF document text
- http://www.opentle.orgIn 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/7ec27756-1e89-4171-9baa-becc5dc0442f/tudokajonobiva.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dae27d46-5402-44c6-ae44-f168400d1ee6/fubot.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b19a08dc-439f-4469-93aa-4c4ac173946a/87275964099.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/425b6d56-df0c-4dc1-9e44-82359ceffc4b/55048520534.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00007865.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x7865	12880 bytes
SHA-256: `93203d27a938284fcd3b439a331594c04d932c384860510c1eee2975d86c5cba`
`font_00_sfnt_off00006625.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6625	5396 bytes
SHA-256: `4441a7cea32225d7fb502a0f797c8687e7c9d60c0326a144a3504bd865112af9`
`font_02_sfnt_off00009ce9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9CE9	11296 bytes
SHA-256: `efab8dd7c4bf428219988b404a5620ea6dde795cda5ed1481998bf345aec6858`
`font_03_sfnt_off0000c370.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC370	16376 bytes
SHA-256: `069f5cdcb972b33999f3dc18a3e5b847fc2aa024b7c5b45b4734cedf253a8e5c`

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