PDF malware analysis — malicious · 1732295e59a11a61

MALICIOUS

PDF

88.9 KB Created: 2021-07-06 16:46:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13

MD5: c2b939325cff8aaa5f6269b48d638be7 SHA-1: effc5277b0a3e3904b09b41159c08cb21ee5f330 SHA-256: 1732295e59a11a61873c7f8b50148e5093efdb6d4f693381008bf747caa93d86

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is identified as malicious by ML classifiers and ClamAV. It contains numerous URLs pointing to compromised WordPress sites, indicating a link farm designed to distribute malicious content or lead users to phishing sites. The PDF structure and embedded links strongly suggest a phishing or traffic redirection scheme.

Machine Learning

Nyx PDF Classifier malicious score 0.9835

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 http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b4373d3d1f8---75285939340.pdf In PDF document text
- http://demkapi.com/resimler/files/zenisitevuditawekevivu.pdfIn PDF document text
- https://www.m2asolutions.com/wp-content/plugins/super-forms/uploads/php/files/fc91c1eadca824cf38a49a84e77f4f4e/7865776239.pdfIn PDF document text
- http://partnercable.hu/files/76627280175.pdfIn PDF document text
- http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cd65d759f1---wirubexu.pdfIn PDF document text
- http://monroe74.com/clients/871877/File/33890679257.pdfIn PDF document text
- http://www.maderas-navarro.com/ckfinder/userfiles/files/93967128000.pdfIn PDF document text
- http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a4650ec7a7d---93195542860.pdfIn PDF document text
- https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/cf5efae88708aebdbc354f405a96c8f2/ramizodo.pdfIn PDF document text
- http://ccspatti.org/userfiles/file/vegarunivuki.pdfIn PDF document text
- https://srldirect.com/ckfinder/userfiles/files/sikexewitebenivesixavona.pdfIn PDF document text
- https://kis-u.com/page_data/file/20210604021421.pdfIn PDF document text
- https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/m6vened51llijjgd326ek5cp6m/87021785014.pdfIn PDF document text
- https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/496654a770136957b9e71b7e7d321c63/52265331952.pdfIn PDF document text
- http://suachuaspa.com/upload/images-content/files/65503218975.pdfIn PDF document text
- https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606fd6ca55cdc---mepufikilem.pdfIn PDF document text
- https://www.nexidia.it/wp-content/plugins/super-forms/uploads/php/files/f21fab02bd3716c43a5d7b84402fd891/1299595280.pdfIn PDF document text
- https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/303e915b9384189cc50b71a79db5967a/zafuduvajafumixib.pdfIn PDF document text
- https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/c0f9ec9250fc49271be688979a81141f/48251532802.pdfIn PDF document text
- http://silverleafspa.ca/clients/10619/File/17214688447.pdfIn PDF document text
- https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/0bdbd2293c170e3913440e5b49b80ded/98241048970.pdfIn PDF document text
- https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab108281c91---ratarib.pdfIn PDF document text
- https://arab-hams.com/Ups/files/wimuje.pdfIn PDF document text
- https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/rpb5qkpqdp8nbkti6av26sjhro/99088742638.pdfIn PDF document text
- http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160cfc851f22fb---sugiwezototojufezada.pdfIn PDF document text
- http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f005670292---mekimakaketut.pdfIn PDF document text
- http://fujavietnam.com/images/Download/77235804929.pdfIn PDF document text
- https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081dc09c8e94---26557222747.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=difference+between+atomic+number+and+massPDF 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_off0000f84d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF84D	16848 bytes
SHA-256: `d3418ad2fc54b85dad27a12af84ce48346eacd5342240926f6da25e213d91a4e`
`font_01_sfnt_off0001241d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1241D	10920 bytes
SHA-256: `f8be724baf229bb724b893cd9fa1899722e865b5d88e25049473e3205794ec41`
`font_02_sfnt_off00013d81.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13D81	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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