PDF malware analysis — malicious · 863def6079a6302c

MALICIOUS

PDF

65.9 KB Created: 2020-12-23 23:54:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 8748db887351c077f454a84809fdf89e SHA-1: 7cc61b99d9e97f044724d9f71092c0dee9b1aaec SHA-256: 863def6079a6302cc85c4eb52b562ab71bb09c7a30425ac6093dea51ddefeab2

244 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

This PDF document contains a significant number of embedded links, many pointing to disposable hosting services and redirector infrastructure. The primary purpose appears to be directing users to malicious websites, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. While no scripts were explicitly extracted, the structure and heuristics strongly suggest an attempt to exploit user interaction with links for malicious purposes, likely phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://gettraff.ru/strik?utm_term=hitman+1+goty+ps4 In PDF document text
- https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/tubekusefisu.pdfIn PDF document text
- https://wojawodexof.weebly.com/uploads/1/3/4/6/134673733/a39a7756aad7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4389792/normal_5f92517fedc45.pdfIn PDF document text
- https://jubekufolofifi.weebly.com/uploads/1/3/4/5/134593927/tititoxepufudun.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365551/normal_5f87156fbc681.pdfIn PDF document text
- https://cdn.sqhk.co/kokowoxiwi/Cjeojii/26203032906.pdfIn PDF document text
- https://rodofuzox.weebly.com/uploads/1/3/4/5/134599037/morerilo.pdfIn PDF document text
- https://cdn.sqhk.co/kipasewimoni/ejehcgf/basketball_free_throw_drills.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416510/normal_5fa4f5fc0ad99.pdfIn PDF document text
- https://cdn.sqhk.co/zexukobesu/jfFjgnx/piano_tiles_4_magic_tiles_go_2020_descargar.pdfIn PDF document text
- https://cdn.sqhk.co/xolizoxime/4I3hegi/among_us_imposter_keyboard_controls.pdfIn PDF document text
- https://gokododilu.weebly.com/uploads/1/3/4/5/134578034/wagufisavivez.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454161/normal_5fa5f4639f8d1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372371/normal_5fb338cd6150c.pdfIn PDF document text
- https://cdn.sqhk.co/dumoniriwo/ie4hggg/sweet_boy_baby_photos_free.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/b3754c4a-c170-4816-8fe9-8448c9eb950b/lanzamiento_de_martillo.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_off0000b722.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB722	4884 bytes
SHA-256: `633b2d42afd0aa7ec94232203198db0e41a1c5029943671fc4f7add5ce1d3449`
`font_01_sfnt_off0000c7a7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC7A7	11008 bytes
SHA-256: `13f75fcac82f5e4ad554f734d319aa540692a11d3d93656cba0cf3aff516f3fd`
`font_02_sfnt_off0000ecd8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xECD8	4324 bytes
SHA-256: `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`

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