PDF malware analysis — malicious · bfb459e956ff05fc

MALICIOUS

PDF

73.3 KB Created: 2021-02-25 12:52:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26

MD5: d8b875ad78d6b6d2a320d492fe0013ca SHA-1: cce9bf27428bcf34526fe9f3a9cef5feb7b70b5f SHA-256: bfb459e956ff05fc128a4a77bd3e51ab12e22a9b72d02e54f2ff37c41b925671

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO spam campaign. The document body, though heavily obfuscated, contains keywords related to 'genie door opener programming' and references to wkhtmltopdf, indicating it's likely a lure to drive traffic to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://seumenha.ru/wix?keyword=genie+door+opener+programming PDF link annotation
- https://nupimixek.weebly.com/uploads/1/3/2/7/132712066/133802.pdfIn PDF document text
- https://cdn.sqhk.co/wolebiduju/eQW0Zjf/derwent_watercolor_pencils_36_set.pdfIn PDF document text
- https://cdn.sqhk.co/wirowanorax/fhGY6gc/pocket_mine_2_cheats.pdfIn PDF document text
- https://cdn.sqhk.co/pijujuweg/hbNZjhN/metal_commando_squad_metal_shooter_mod_apk.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4446923/normal_5fea18cf25d50.pdfIn PDF document text
- https://lijipipixeralof.weebly.com/uploads/1/3/3/9/133999964/bogaxidivutoda.pdfIn PDF document text
- https://rigonabex.weebly.com/uploads/1/3/1/4/131483185/3817461.pdfIn PDF document text
- https://derajuxojop.weebly.com/uploads/1/3/1/4/131452827/00a63b.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4412775/normal_5ff144f8277f0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449771/normal_5fe7db4b498eb.pdfIn PDF document text
- https://wapaberupuz.weebly.com/uploads/1/3/5/3/135397773/miloje-joxoz.pdfIn PDF document text
- https://gapibuxox.weebly.com/uploads/1/3/2/6/132695643/lorasepovezubirepu.pdfIn PDF document text
- http://nofosofeze.iblogger.org/ditotesodoxedaxetip.pdfIn PDF document text
- https://kagodititaf.weebly.com/uploads/1/3/4/8/134868324/8111737.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4448746/normal_60170ae1ebc0d.pdfIn PDF document text
- https://cdn.sqhk.co/sawomunuj/hcgi3gc/33611566962.pdfIn PDF document text
- https://dotaterezisal.weebly.com/uploads/1/3/4/7/134771172/7474993.pdfIn PDF document text
- https://pixasarajesuwov.weebly.com/uploads/1/3/4/6/134688766/06c26f753b.pdfIn PDF document text
- http://masovizifuzaro.iblogger.org/animal_ski_trousers_size_guide.pdfIn PDF document text
- http://www.coventryfirst.co.uk/data/images/new_jaguar_logo__2_.jpgIn 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://doriponesarom.myartsonline.com/vadawuboxebanab.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_off0000d7fa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD7FA	4808 bytes
SHA-256: `e7fb32ac35492bcb96b81d29046994b31a21257c6552d6d54c958d77ef8e81c4`
`font_01_sfnt_off0000e82b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE82B	9812 bytes
SHA-256: `161da1ed6b945e50a426a63bd8e500245cccde352a6dac9e366b265155260d76`
`font_02_sfnt_off000109b1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x109B1	4324 bytes
SHA-256: `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`

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