PDF malware analysis — malicious · 02b8fb7e5f498dad

MALICIOUS

PDF

81.4 KB Created: 2021-09-04 17:25:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26

MD5: 3187d376c2be655cb2b6fbfff2601705 SHA-1: c4349b38b0ed6daf92d6fdb82da039eb79b1bc13 SHA-256: 02b8fb7e5f498dad2cb4018fda2ea1e15b68d15747228edd39027e5702261b47

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF was flagged by ML classifiers and ClamAV as malicious. It contains a link farm pointing to multiple compromised WordPress sites and disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of numerous unknown URLs indicates a broad distribution or redirection strategy.

Machine Learning

Nyx PDF Classifier malicious score 0.9911

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://radmangroup-ye.com/rgfiles/file/4899145486.pdf In PDF document text
- http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/ipqdumo1k653stsvsvuh6ru9a6/simivokopukidujuxanilemer.pdfIn PDF document text
- https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a33ce7dff9---meledejoke.pdfIn PDF document text
- http://blackwingsexpress.com/upload/userfiles/files/remejupomufopidoxuvaroji.pdfIn PDF document text
- http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606cde8ac1e1d---26233709906.pdfIn PDF document text
- https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/qrk8k8ka5velkcgc506b5uktgp/6075749867.pdfIn PDF document text
- https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160729715de6df---ledofeganatopemumudazo.pdfIn PDF document text
- http://aaaexpressheating.com/userfiles/file/13404495635.pdfIn PDF document text
- https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/4c9f83ec5823c61d76ddeab2617febd3/61080412138.pdfIn PDF document text
- https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/c5125a2d7700158ef61f9dc0fdab1b99/29569649366.pdfIn PDF document text
- http://anaminfo.com/attachfile/file/pugawabolevabafagigav.pdfIn PDF document text
- https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/09683f5fc894f87b55af267f45d2658a/gudizuf.pdfIn PDF document text
- http://wgadget.com/file_media/file_image/file/96096267632.pdfIn PDF document text
- http://hoadon-dientu.net/images/files/28711713000.pdfIn PDF document text
- http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bb4aed47f12---xagumaberumiperisixojin.pdfIn PDF document text
- http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074641fcfe28---zuvijib.pdfIn PDF document text
- http://sgadsahodayatarntaran.org/sahodyatarntarannew/userfiles/file/45142203470.pdfIn PDF document text
- https://hanul-muresenilor.com/wp-content/plugins/super-forms/uploads/php/files/odn58jnvjan5383d8vs1n15l8s/fubatesatizadokirojek.pdfIn PDF document text
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/369ac2ecdb660ad5f53f8df4587c7f35/99862870189.pdfIn PDF document text
- https://www.ltgpartners.com/wp-content/plugins/super-forms/uploads/php/files/9b9028e0ec24281f1230d8a656f5b3a0/jowiminunewexerul.pdfIn PDF document text
- https://sunarchegypt.com/userfiles/file/28236885509.pdfIn PDF document text
- https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/eb098bed41ea599957a3b70a1ca5bed4/99897261276.pdfIn PDF document text
- https://pakianco.ir/data/image/uploads/news/files/kalafejuwerirevodanudawes.pdfIn PDF document text
- https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ce43902a771---zubetebinemabure.pdfIn PDF document text
- http://faizleathergloves.com/userfiles/files/21862105198.pdfIn PDF document text
- http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1609ef97523934---16506902051.pdfIn PDF document text
- https://hizlipin.com/calisma2/files/uploads/movodudi.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=platonov+livro+pdfPDF 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_off0000d515.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD515	10260 bytes
SHA-256: `ff7b1bc1388df576c59c24d53e1f87b84e3bccb3b7aca7824cdcc44eeaa88338`
`font_01_sfnt_off0000ec3c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC3C	19072 bytes
SHA-256: `9c99d7c65165db0691ce7f9808350de67a6f91e18ade97c8131de287a4722e48`
`font_02_sfnt_off00011e05.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11E05	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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