PDF malware analysis — malicious · 46dce4a074646433

MALICIOUS

PDF

46.5 KB Created: 2020-10-28 15:51:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07

MD5: b6b5597f5d7440a92f58c1fbfa042a35 SHA-1: c40de94c38f3161ca6ec5c8054980b758f2459f2 SHA-256: 46dce4a074646433bde2442ae66034faed37689aeb3cf634682e8a7491c176cc

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to external websites. One of these links, 'https://gettraff.ru/strik?keyword=open+prior+datasets+in+sas+university+edition', is flagged as a malicious redirector. The document's structure and the presence of numerous links suggest an attempt to direct users to potentially harmful sites, likely for phishing or malware distribution.

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 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.
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/strik?keyword=open+prior+datasets+in+sas+university+edition In PDF document text
- https://cdn-cms.f-static.net/uploads/4368497/normal_5f87df182265d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366965/normal_5f8f83daf3887.pdfIn PDF document text
- https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/a4a9aa8.pdfIn PDF document text
- https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/dekisod.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393364/normal_5f8e96fbd3a6c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381738/normal_5f8beb8c5e24d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381098/normal_5f93296c7f6f1.pdfIn PDF document text
- https://folemazilepi.weebly.com/uploads/1/3/1/1/131164248/fdd63f788.pdfIn PDF document text
- https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/tefinopixiw.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413225/normal_5f964977d760f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385213/normal_5f8fb29015ab3.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/f2f9e92c-da29-44e2-8608-d0ddf5a0cdea/90814895151.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/88b309ca-af9f-406a-b3c0-25619879a3dd/30156849643.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6f2e95a0-b22a-4526-a73b-74488eabc232/90735740995.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bf786be5-b53a-45b2-8872-10fe57fe8a7b/nutimuzopapijem.pdfIn PDF document text
- https://s3.amazonaws.com/gorajikunobixi/tedowopokefajasakekeput.pdfIn PDF document text
- https://s3.amazonaws.com/fifomi/hernia_diafragmatica_neonatal.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fed232bc-453e-47dc-bba8-a7596256c430/tebenumolezezizenifo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8828d064-0d7e-435d-ac39-b3811c25d45d/23630983727.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006c52.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C52	5108 bytes
SHA-256: `c9b11ca245ceed70c7d9f758807c531e5389cde8bfcdd12b247743004aeb4a8c`
`font_01_sfnt_off00007dbe.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7DBE	1940 bytes
SHA-256: `414d786b459f0f5d2a731291ef1b870d88176140611ada2eab9f82aaf6e76e23`
`font_02_sfnt_off000086f4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x86F4	10980 bytes
SHA-256: `00de235f773d2ce2692b1b50a6380e768199e8890001c0dc5ec7993312636363`

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