PDF malware analysis — malicious · f1f2ca9a6e502cbd

MALICIOUS

PDF

99.1 KB Created: 2021-06-30 21:15:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14

MD5: d482222e52c73b4218aa7f50f7cbb1e9 SHA-1: 23f60a9691edcbf41de301bd66a6932e0a7329bb SHA-256: f1f2ca9a6e502cbdd24aa9a8c12001cc38cf7d1dc473066e5f10c2fd27030b57

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised websites, specifically leveraging WordPress upload storage, suggesting a phishing or malware distribution scheme. The presence of multiple distinct hosts and the use of 'utm_term' parameters in some URLs further support the attack pattern of directing users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9928

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16076cc3fe1f3d---jowidoloraranuxazab.pdf In PDF document text
- http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160855a47274ee---99755576625.pdfIn PDF document text
- http://teknis.it/userfiles/files/birowoxad.pdfIn PDF document text
- https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d372ba3d2c2---vewezumufanimolef.pdfIn PDF document text
- http://oasis-inwaste.asia/files/file/jojufiwaxezekogede.pdfIn PDF document text
- https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/b8b15270ab3756875884379488464c72/dixogunukufunuz.pdfIn PDF document text
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/d4a82cd83cca860645c2253491112542/nikevazenisexoxov.pdfIn PDF document text
- https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/at7g60en7pbloc63uajm8vovi5/90831905186.pdfIn PDF document text
- http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607060d78fd30---lenufituzoji.pdfIn PDF document text
- http://davisfolk.net/clients/1/1f/1f1070e31f35868a9a13f38ee7dc887f/File/8199291157.pdfIn PDF document text
- http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/16094a0f3be6c0---lisovuvevapowewokiwidevaw.pdfIn PDF document text
- http://koovappadyscb.com/ckfinder/userfiles/files/90892185303.pdfIn PDF document text
- http://theeultimatenetworker.com/ckfinder/userfiles/files/5442646445.pdfIn PDF document text
- http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c23ca8f040d---vufetovekaxunazaketo.pdfIn PDF document text
- https://dolmalatrek.com/userfiles/file/99863652192.pdfIn PDF document text
- https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/mj76efm2dj9qhuaplmvfoja8cr/80971565039.pdfIn PDF document text
- https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609537f1bd17d---88691496654.pdfIn PDF document text
- https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2f38e6aa5cf7558033e29eff8809d3dc/zawagazipanokizilifo.pdfIn PDF document text
- http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16088ae4c5d731---67023402744.pdfIn PDF document text
- http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0fa06b94d4---degawajod.pdfIn PDF document text
- https://tortugafilms.ca/adminfiles/file/tuwebidowomumube.pdfIn PDF document text
- http://cycling-software.com/files/file/8896989224.pdfIn PDF document text
- http://xn--dlek-5qa.com/admin/UserFiles/file/kilos.pdfIn PDF document text
- https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/3ede8069e075636ccf3ac09deb34eda4/30722350309.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=mind+over+mutantPDF 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_off00011f72.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11F72	18268 bytes
SHA-256: `d52dfb29e4c4432bf4094a6d22e86d77e5606762e650f4709a9e2b73bb02029f`
`font_01_sfnt_off00014e7c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14E7C	10356 bytes
SHA-256: `a20b9be737976c30775d9a8996a2172ba504500a32cbda76922e62ae8d7ac468`
`font_02_sfnt_off000165d9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x165D9	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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