PDF malware analysis — malicious · 7c102a43270c6629

MALICIOUS

PDF

81.8 KB Created: 2021-04-01 11:56:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22

MD5: 0ee9e34abcc33c44ac3d96fdf3b3457c SHA-1: 2680d928afffce3368f6394366818b416877ad33 SHA-256: 7c102a43270c6629af8da3778497d246ebc6adc7fd1de10521538cf4cab2817b

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many of which point to disposable domains and are part of a link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9992

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://leonvi.ru/strik?utm_term=honeywell+oil+space+heater+not+turning+on PDF link annotation
- https://jimamejovegevag.weebly.com/uploads/1/3/4/5/134593921/pofugasisesutuli.pdfIn PDF document text
- http://submonster.xyz/washington_gastroenterology_bellevue_clinic0oln1.pdfIn PDF document text
- http://mupifojoxur.medianewsonline.com/effective_public_relations_cutlip.pdfIn PDF document text
- http://levantegroup.net/vekodojulimulasapol2cnty.pdfIn PDF document text
- http://gifavojam.scienceontheweb.net/lafusododasoxuraw.pdfIn PDF document text
- http://werenntaq.online/zugasuvefuxilerasulidokiqr5qr.pdfIn PDF document text
- http://tonagruz.ru/is_the_least_cost_theory_still_used_today6yzr0.pdfIn PDF document text
- https://nigukaxo.weebly.com/uploads/1/3/1/4/131453065/zesuv-dabufamubaxide.pdfIn PDF document text
- http://akmurzina.com/order_email_template_magento_29zr4v.pdfIn PDF document text
- http://potenciy.xyz/swing_trading_strategies_for_beginners3jhc8.pdfIn PDF document text
- http://bcpzon4segurabetaviabcp.com/kamusigagarukzl8ew.pdfIn PDF document text
- http://begdas.fun/how_to_emulate_android_on_pc004un.pdfIn PDF document text
- http://jinevul.mygamesonline.org/free_barbara_cartland_novels.pdfIn PDF document text
- http://wozilimesiz.mypressonline.com/74011461819.pdfIn PDF document text
- http://geosen.net/adobe_creative_cloud_design_packaged2adi.pdfIn PDF document text
- https://dobuxavebixeli.weebly.com/uploads/1/3/4/7/134725246/1770233.pdfIn PDF document text
- http://realwockyc.info/is_maritime_law_lucrativeakcks.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.fontrix.comhttp://www.nhncorp.comIn PDF document text
- https://56db2a4d-09ce-4ff6-a558-abb1d6727cd4.filesusr.com/ugd/003b86_4493306a1d88446584e01a7620f20d98.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/3424f7f5-303d-4391-ab10-7e89961a52cb/30485073421.pdfIn PDF document text
- https://e49cd12a-7e53-4a25-9f98-ae37b5ff2e44.filesusr.com/ugd/35dc59_855d0ffc42d04ab5877edda075d82a69.pdf?index=trueIn PDF document text
- https://869e45c2-9c2d-410b-ad52-4d3411d41339.filesusr.com/ugd/73bd41_5baa972be0ab44b0ac1d7385538fdced.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/03e3e43f-9032-4e94-84d0-e5a251592c60/magnavox_32_720p_smart_roku_led_tv.pdfIn PDF document text
- http://kigokigaruv.myartsonline.com/investment_analysis_report.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_off0000f540.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF540	5352 bytes
SHA-256: `a9225a1ac8fa8d5c9aafca845f11028a2c0730c6b6e0d7ce7b1e7b65cc0d3cf1`
`font_01_sfnt_off00010784.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10784	11936 bytes
SHA-256: `2eb6452ce1cc4b4996cbf1ea02dbd43b25f47435014f1a9143d4e6c21f0ef682`
`font_02_sfnt_off0001304c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1304C	2056 bytes
SHA-256: `e56f5db8faf554166087922806b3819c377976d94af14c6b8a512386de68c265`

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