PDF malware analysis — malicious · b9ae429c84f5dec0

MALICIOUS

PDF

77.0 KB Created: 2021-03-17 04:49:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04

MD5: f6ae6f1e26bc8816dbbf2a2cbd975cba SHA-1: 28961d070fc43e073010ac7a62ba93443f0e7194 SHA-256: b9ae429c84f5dec04b0a6e2808fa50b6fa65fef9f5cfd433fc8c5e3a8c5ba505

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by multiple heuristics and an ML classifier, with ClamAV specifically flagging it as a phishing trojan. The document contains a large number of external links, many pointing to disposable domains, suggesting a link farm designed to redirect users to malicious sites. The presence of embedded URLs and the overall structure strongly indicate a phishing or malware distribution attempt.

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
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.
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://pelibifir.ru/award?keyword=ncert+math+book+for+class+12+with+solution+pdf PDF link annotation
- https://cdn.sqhk.co/zivudasexoni/jdNdbfm/sonic_adventure_dx_mods_pc_download.pdfIn PDF document text
- https://tewefoxik.weebly.com/uploads/1/3/4/8/134857012/4051485.pdfIn PDF document text
- http://lezapogogaz.iblogger.org/bufodudusisise.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383579/normal_60244734e97b9.pdfIn PDF document text
- https://goguribepolim.weebly.com/uploads/1/3/0/7/130739596/gudururaziwovi.pdfIn PDF document text
- https://gulapekojikag.weebly.com/uploads/1/3/2/7/132741551/4be02676f5.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4417413/normal_5fe0e0ff5480c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4383340/normal_6000371c281d8.pdfIn PDF document text
- https://gekomawaloloro.weebly.com/uploads/1/3/4/4/134443710/85b50.pdfIn PDF document text
- https://cdn.sqhk.co/lojosexotak/jfA6jgD/jobs_worksheet_british_council.pdfIn PDF document text
- https://cdn.sqhk.co/baxikomo/fLa3BOI/off_road_4x4_hill_truck_gaz.pdfIn PDF document text
- https://borubuzas.weebly.com/uploads/1/3/4/0/134042729/diwogufune_morob_xezujamopatak_rapewufixufo.pdfIn PDF document text
- https://kovakaxidaxid.weebly.com/uploads/1/3/5/3/135322813/875fc52b190f55.pdfIn PDF document text
- https://xiruzavaxukegaf.weebly.com/uploads/1/3/5/3/135324830/lesodo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4470837/normal_60337e112f644.pdfIn PDF document text
- http://rozefuzapotor.iblogger.org/pojenosidumibewaj.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://03dfb0eb-7fe6-4188-ad87-ea2b88df7b19.filesusr.com/ugd/f967ac_9061c5686fc24d498e4a85abf2071e9a.pdf?index=trueIn PDF document text
- https://52ed6390-a5c1-4502-9f93-599cf6d98ad1.filesusr.com/ugd/f7fbc8_a4b1465037144af9a439a62accb94f11.pdf?index=trueIn PDF document text
- https://ca3ec1ac-6ff7-4c8f-ae0f-86a30d86e335.filesusr.com/ugd/3615fb_d46ff37785b444bd945bb9eae8ea2035.pdf?index=trueIn 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_off0000e169.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE169	5728 bytes
SHA-256: `f4b66d295fb65ac0a74e5e5c974cbbf6e08a0b2326b4e2fb4a08d31b4375a8a9`
`font_01_sfnt_off0000f4d2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF4D2	10444 bytes
SHA-256: `75ddb903468d0c2750890513e0a74b7b9fbb8b12165d81f5e7ccfde8e6443f3e`
`font_02_sfnt_off00011876.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11876	4324 bytes
SHA-256: `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`

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