PDF malware analysis — malicious · 0f955ffa66534124

MALICIOUS

PDF

74.5 KB Created: 2021-06-10 10:31:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24

MD5: 269840b81ed00055e2c7ed0f2e44e643 SHA-1: ad6e925672675bf7e598eb0623d2e4ae391ca3eb SHA-256: 0f955ffa66534124ef827158f92ea3ba5aa995d77128048325fa43d61a9d4228

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs, with a primary suspicious URL identified as 'https://xezojetit.ru/123?utm_term=idsa+guidelines+pneumonia+2007'. Heuristics indicate this PDF is a link farm hosted on disposable domains, strongly suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. No scripts were extracted, but the presence of numerous external links points to an attempt to redirect the user to a malicious site.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

Heuristics 5

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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.
External URI info PDF_URI

PDF contains an external URL action
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://xezojetit.ru/123?utm_term=idsa+guidelines+pneumonia+2007 PDF link annotation
- https://cdn-cms.f-static.net/uploads/4415739/normal_6063b77bd17eb.pdfIn PDF document text
- https://pinonomobeberex.weebly.com/uploads/1/3/4/3/134318871/xesudif.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4456685/normal_5fdfbad6d9768.pdfIn PDF document text
- https://dupemokuko.weebly.com/uploads/1/3/4/7/134759865/8145045.pdfIn PDF document text
- https://kaperimivegorew.weebly.com/uploads/1/3/4/3/134371305/29f48.pdfIn PDF document text
- https://nanukofufo.weebly.com/uploads/1/3/7/5/137516761/2473916.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4392660/normal_602d6bcfc226f.pdfIn PDF document text
- https://sigalositas.weebly.com/uploads/1/3/4/6/134618276/xolujatafemulumew.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449185/normal_605f89d6a30cb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4450036/normal_6068c621762a3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416796/normal_60bfe5394d9cd.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4490122/normal_5fde3b84b2ac7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373301/normal_60143a19b53bd.pdfIn PDF document text
- https://vafubetuxako.weebly.com/uploads/1/3/4/5/134503762/6101308.pdfIn PDF document text
- https://vonuvevija.weebly.com/uploads/1/3/1/4/131407152/7726454.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4479938/normal_604e3896abe78.pdfIn PDF document text
- https://gubijebe.weebly.com/uploads/1/3/1/4/131483267/1034177.pdfIn PDF document text
- https://dokurutomexem.weebly.com/uploads/1/3/4/3/134306651/semoxokeke.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
- http://kodalomibika.pbworks.com/w/file/fetch/144826788/vosimuligoxuri.pdfIn PDF document text
- http://xugilip.pbworks.com/w/file/fetch/144626625/disadvantages_of_shannon_and_weaver_communication_model.pdfIn PDF document text
- http://rasovuxosew.pbworks.com/w/file/fetch/144587316/best_ice_breakers_for_sales_meetings.pdfIn PDF document text
- http://kedefoviraj.pbworks.com/w/file/fetch/144759813/mazovijenonaliwiposujaliw.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_off0000d8a0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD8A0	5276 bytes
SHA-256: `a714c27934459b1a6268d1b771a2195fb31376c508d25f9a4030451b5732ea4d`
`font_01_sfnt_off0000ea76.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEA76	10596 bytes
SHA-256: `f3e748448b1a746cd7cde65c216d8c3be676f2f07c890effcda00c861b201a54`
`font_02_sfnt_off00010ec9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10EC9	4324 bytes
SHA-256: `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`

Open this report in the interactive analyzer, or submit your own file for analysis.