PDF malware analysis — malicious · 57a80dc3fa925020

MALICIOUS

PDF

87.2 KB Created: 2021-07-02 06:00:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20

MD5: b36e944fa980faef647156ab35434144 SHA-1: e48d8233bc79a3723c5862964030904702b75b7e SHA-256: 57a80dc3fa92502057f125cfd09f5e1d6b30e64fca81d09e0e0d2cb157c15312

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm or phishing lure. Although no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious document designed to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9942

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
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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://hiampelectric.com/wp-content/plugins/super-forms/uploads/php/files/642d9e7b6d031f17706afd03f8ff1e58/91253273337.pdf In PDF document text
- https://transmar.biz/ckfinder/userfiles/files/sikaminetipizudifanikugi.pdfIn PDF document text
- http://meruzhankhachatryan.com/app/webroot/files/file/10963243069.pdfIn PDF document text
- https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b11a12af219---8287626083.pdfIn PDF document text
- http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607953e89da83---9881350069.pdfIn PDF document text
- http://halaljones.com/uploads/files/68210984624.pdfIn PDF document text
- https://hosvagyok.hu/userfiles/file/wewibibi.pdfIn PDF document text
- https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d2cf513086---tipipufaparopimasab.pdfIn PDF document text
- http://orosweb.hu/ckfinder/userfiles/files/89034495442.pdfIn PDF document text
- http://chemonova.com/FCKeditor/file/54784084375.pdfIn PDF document text
- https://wulf-sanitaer.de/wp-content/plugins/super-forms/uploads/php/files/n1n7k956nlvh5a1qedo6t81ndi/67987480582.pdfIn PDF document text
- http://ahdongjiu.com/upload_fck/file/2021-6-5/20210605221955705953.pdfIn PDF document text
- http://lamachine.nl/userfiles/file/56123820837.pdfIn PDF document text
- https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/b3202a5ac0bca23de0b684e5461f529e/6256517739.pdfIn PDF document text
- https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ba60e6e2e85---25571617434.pdfIn PDF document text
- http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/160bbdeb69fbcb---75464961607.pdfIn PDF document text
- http://arablift.net/userfiles/file/11472671724.pdfIn PDF document text
- http://famillespourstarlight.ca/clients/a/a9/a9b42c05011d3bb27e7f7ec2ed30324f/File/32753751439.pdfIn PDF document text
- http://thedewakohchang.com/image/upload/File/8836196412.pdfIn PDF document text
- https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/f6c35476ae0c747cb52c31edfbde850d/10890504739.pdfIn PDF document text
- http://www.misshandicap.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608db95400b73---fadira.pdfIn PDF document text
- http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16075d127cc595---fedajorolanunuvati.pdfIn PDF document text
- http://phuvuongcorp.com/luutru/files/xoxolulameravaki.pdfIn PDF document text
- https://motelandratecuci.ro/userfiles/file/38372841643.pdfIn PDF document text
- http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ecf66d989b---98136500688.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=drawing+room+wooden+ceiling+designPDF link annotation
- 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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f00f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF00F	17356 bytes
SHA-256: `7c8a1beaf1e9913cc13471b45f774036c901e43a58a41df2199b4bb3e7d46865`
`font_01_sfnt_off00011d23.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11D23	10704 bytes
SHA-256: `1c51429f17e0277d63f7da6da38c38da06cad0634be0e955b1fd02c48aef4fe4`
`font_02_sfnt_off00013578.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13578	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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