PDF malware analysis — malicious · 9040d6ccfae84e69

MALICIOUS

PDF

87.9 KB Created: 2021-07-17 03:43:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14

MD5: 10cebef99c34ed074ef234c378f57cff SHA-1: df7a0d8baeb6b7ba4a52887aa9bdc0dcf2230339 SHA-256: 9040d6ccfae84e69d4e76c98643114e8a7b26e960eb997de7c7ef95a4d3e2d95

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to multiple compromised WordPress sites, indicating an attempt to redirect users to malicious content. The presence of numerous unknown URLs suggests a broad phishing or malware distribution campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9835

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 http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/160992fd273639---74908974932.pdf In PDF document text
- https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/25f2b8258f8cdd06fc7c4dc1bce6f573/35234755149.pdfIn PDF document text
- http://hollywoodterrace.org/clients/863344/File/zoginasogomubad.pdfIn PDF document text
- http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609df0120f8cf---jajitewaxotejexovowug.pdfIn PDF document text
- http://carrozzeriardue.it/userfiles/files/sijosatunipixu.pdfIn PDF document text
- http://hondatayho.top/img-ngocbao/files/79307812433.pdfIn PDF document text
- http://cmtsport.com/pliki/91718587390.pdfIn PDF document text
- https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/7c6a27eihkjckric2slsqhp48t/nodakirewi.pdfIn PDF document text
- https://watertorens.nl/userfiles/file/gafujugatagetok.pdfIn PDF document text
- https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f8c840bace---38240567380.pdfIn PDF document text
- http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3163f37d78---72784816352.pdfIn PDF document text
- https://salubrismd.com/wp-content/plugins/super-forms/uploads/php/files/a3becb231587d4cbecf19820bf14f00e/54953409964.pdfIn PDF document text
- http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160e81469e9722---jififa.pdfIn PDF document text
- http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607463d1a1c18---wumimuwi.pdfIn PDF document text
- https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/19g9f7o0g550og5qjidqvqu7i3/21734620518.pdfIn PDF document text
- https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d18974dd601---fodumoxojuwibajetoxa.pdfIn PDF document text
- https://www.themeshcowork.com/wp-content/plugins/super-forms/uploads/php/files/049c70adaa81122e2a619b037ecf0bf9/88407132606.pdfIn PDF document text
- https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/ni71bp49d3tg9eehkdmegonjn9/refutoxomid.pdfIn PDF document text
- http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16092fcd7b8802---83857681985.pdfIn PDF document text
- http://ghalemdi.com/userfiles/file/gijadudineruwim.pdfIn PDF document text
- https://mytopics.it/uploads/file/90185028255.pdfIn PDF document text
- http://sonkertrail.org/clients/9/92/9260a3c387aed4615f72c72c3a1da295/File/wukosokafi.pdfIn PDF document text
- http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b951f6ede17---zotidekuzapedopaxu.pdfIn PDF document text
- https://standsimulator.com/ckfinder/userfiles/files/niludalazimokedam.pdfIn PDF document text
- http://geodez.com/pliki/file/limavosenevejus.pdfIn PDF document text
- https://zivotzaokny.eu/res/file/36428870201.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=chocolate+peanut+butter+haystacksPDF 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_off0000f164.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF164	18088 bytes
SHA-256: `acbf266a78734a3748b5492011cad5639612950f687cdc57a03b353846ebae6a`
`font_01_sfnt_off0001210b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1210B	10856 bytes
SHA-256: `86aaebe1274768615205159b636d507477caf84f2c1bb8e506e6cde93f605824`
`font_02_sfnt_off000139fe.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x139FE	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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