PDF malware analysis — malicious · c956a13e40c25d64

MALICIOUS

PDF

77.3 KB Created: 2021-06-06 03:05:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 2ee45f78206f8aa5e7844acc94abc218 SHA-1: 444b3fa4302880023a8758f790170e11f260bc2e SHA-256: c956a13e40c25d64fa6dae781714dcd9265d56574000cf6edcfdf153162be90e

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document contains a large number of embedded URLs pointing to disposable hosting services, suggesting a link farm designed to redirect users to malicious sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest an attempt to exploit users through deceptive links.

Machine Learning

Nyx PDF Classifier malicious score 0.9988

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://garglob.ru/pbw?utm_term=how+to+reset+my+water+softener PDF link annotation
- https://sumomaduge.weebly.com/uploads/1/3/4/8/134884200/81b71cd68d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4401703/normal_605453783887a.pdfIn PDF document text
- https://lupagizan.weebly.com/uploads/1/3/1/6/131637074/xaxarije.pdfIn PDF document text
- https://pusigodumutujor.weebly.com/uploads/1/3/4/6/134610993/65cfd98081.pdfIn PDF document text
- https://nategenuniko.weebly.com/uploads/1/3/4/7/134749174/vataz_pasonevuvale_jekozowavuto.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4415519/normal_5fe0ed034cecb.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://pakesobiroge.pbworks.com/f/sowimen.pdfIn PDF document text
- http://mibegenav.pbworks.com/w/file/fetch/144463587/why_doesnt_the_volume_work_on_my_firestick_remote.pdfIn PDF document text
- http://jolunatimavu.pbworks.com/f/xibudefanozu.pdfIn PDF document text
- http://pijipusap.pbworks.com/w/file/fetch/144472959/pokemon_go_mod_apk_latest_version_2021.pdfIn PDF document text
- http://ruwezebom.pbworks.com/f/fallout_3_bobblehead_location_map.pdfIn PDF document text
- http://wurutaw.pbworks.com/w/file/fetch/144555867/11691356145.pdfIn PDF document text
- http://sazupamufode.pbworks.com/f/lulesojiro.pdfIn PDF document text
- http://bevojoluvu.pbworks.com/f/gipasijewonanewaxulujexuz.pdfIn PDF document text
- http://bovozajezo.pbworks.com/f/what_is_a_autosomal_pedigree_chart.pdfIn PDF document text
- http://vazufatar.pbworks.com/w/file/fetch/144688680/xawovezenap.pdfIn PDF document text
- http://xovelezid.pbworks.com/f/what_does_444_mean_in_a_text_message.pdfIn PDF document text
- http://vulazojab.pbworks.com/f/owners_manual_for_armitron_pro_sport_watch.pdfIn PDF document text
- http://funinupun.pbworks.com/w/file/fetch/144427023/25666917133.pdfIn PDF document text
- http://jizakatum.pbworks.com/f/writing_diamante_poems_worksheet.pdfIn PDF document text
- http://lagawiwefe.pbworks.com/w/file/fetch/144528426/xufenelokolove.pdfIn PDF document text
- http://wiwudoje.pbworks.com/w/file/fetch/144536706/how_to_reset_a_kenmore_high_efficiency_washer.pdfIn PDF document text
- http://jesababa.pbworks.com/f/tasabugitumenitonalulata.pdfIn PDF document text
- http://javefanudosa.pbworks.com/w/file/fetch/144678240/lozejarivifaxewas.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_off0000e2ce.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE2CE	4776 bytes
SHA-256: `96cecc7c790af9f326712e3ab80d6dbd59cff3be974f57d35821f5d09d6c50f2`
`font_01_sfnt_off0000f2f3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF2F3	10740 bytes
SHA-256: `5823938b47731c00ed28809cacf3975d760cc0e42561a3e8eba416d6a5b9dce6`
`font_02_sfnt_off00011794.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11794	4324 bytes
SHA-256: `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`

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