PDF malware analysis — malicious · 6ba02cc3a87140fc

MALICIOUS

PDF

76.1 KB Created: 2020-11-18 20:11:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 93688ebcac61cbbfd7a40e4c9eb27447 SHA-1: 1f1fdce4d0b43ad09bc2ed60d655109e6aff9253 SHA-256: 6ba02cc3a87140fcffdeb8c3100e651c346c60e2dd4113f64d8ec70dd2e72616

244 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of embedded links, many pointing to disposable hosting services, indicating a link farm or phishing attempt. One critical heuristic identified a link to known malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to malicious content, likely for phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://ggtraff.ru/123?utm_term=i+love+you+3000 In PDF document text
- https://xovadodelemowuz.weebly.com/uploads/1/3/1/3/131383330/powatemepime_fagob_sudava_melijogadosajal.pdfIn PDF document text
- https://netiwixavono.weebly.com/uploads/1/3/4/3/134306625/5455400.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4447903/normal_5fa76e6f85fc9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4446781/normal_5fa39f488a5da.pdfIn PDF document text
- https://wejakoguxi.weebly.com/uploads/1/3/4/3/134324676/mifogadininibomokazu.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382414/normal_5fb3d8a658ce2.pdfIn PDF document text
- https://davobudo.weebly.com/uploads/1/3/4/4/134432622/165835.pdfIn PDF document text
- https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/1392291.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382771/normal_5f8b6dff22ece.pdfIn PDF document text
- https://wilujogid.weebly.com/uploads/1/3/4/3/134347442/fb259c571c8861.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426257/normal_5fb53f992084d.pdfIn PDF document text
- https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/912726.pdfIn PDF document text
- https://detaliwaka.weebly.com/uploads/1/3/4/3/134340587/suduzerevajipo.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
- https://savannah.gnu.org/projects/freefont/In PDF document text
- http://www.gnu.org/licenses/In PDF document text
- http://www.gnu.org/copyleft/gpl.htmlIn 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
`font_00_sfnt_off0000c6d4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC6D4	4600 bytes
SHA-256: `e1705034782b625eacd5a327e2f09c9415099afdc4b210137d770762a2d36120`
`font_01_sfnt_off0000d666.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD666	6308 bytes
SHA-256: `ae82a171c652fdf86059039fe7bdbfdafac070552cc8b37aadacd7df8884a424`
`font_02_sfnt_off0000e5dc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE5DC	10924 bytes
SHA-256: `00b80f38ce9091c68c2706a76dfcecaf361b4cbd9f5dc839e10cff5613b2cf6d`
`font_03_sfnt_off00010b3c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10B3C	17072 bytes
SHA-256: `4b1bcb34c563b7304a3f8da20616091db57b0d5a21362a24040faaab6a0216fd`

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