PDF malware analysis — malicious · 2d73b99c9cb81e4c

MALICIOUS

PDF

98.2 KB Created: 2021-07-04 02:12:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25

MD5: 98bf5e10d45575686712018b73b3c147 SHA-1: d66e81623883ab01dc7dec75050fa70c91c6daab SHA-256: 2d73b99c9cb81e4cdc56879ee5a15ace5fade394614ad9e7b0919f48ac66e13e

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF was flagged by ClamAV as 'Pdf.Phishing.Trojan' and an ML classifier indicated a high probability of maliciousness. It functions as a link farm, containing numerous URLs pointing to compromised CMS upload directories, suggesting an attempt to lure users to malicious content or phishing sites. No scripts were extracted, and the document body was unreadable, but the heuristic firings strongly indicate a phishing or malware distribution campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9704

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://jnfarley.com/wp-content/plugins/super-forms/uploads/php/files/sbob47lo2lc9qtpdcarlfd5gk7/medufapifuwukidevujij.pdf In PDF document text
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b16b9cc481d.pdfIn PDF document text
- http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078d157b7dbc---perosagarezefutev.pdfIn PDF document text
- https://www.perfumista.co.uk/wp-content/plugins/super-forms/uploads/php/files/e56b39acb19359573385e847f4417813/76486954294.pdfIn PDF document text
- https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/add7cb232db9f3c3d449990f91ee6f7d/dupigerukosokikuravipip.pdfIn PDF document text
- https://www.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a96cf1656f5---bisukoribiki.pdfIn PDF document text
- http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/jqrkufea07v5nd6vqpeo82nsk6/63563602344.pdfIn PDF document text
- https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/7e685804fec4fd1a897674b831312eae/vovuwijenonoraj.pdfIn PDF document text
- http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/3cv75gaj88b9g6ajapf2fh84db/95513532337.pdfIn PDF document text
- http://cpspcb.com/uploads/files/pabewovadob.pdfIn PDF document text
- http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae01508ab35---dajoroxe.pdfIn PDF document text
- https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084be6dbbd78---71952720294.pdfIn PDF document text
- https://cls-toronto.com/wp-content/plugins/super-forms/uploads/php/files/071bfaaa6e060a1074e14356407e9a47/5544297623.pdfIn PDF document text
- https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b60cb95a7c1---lizovefadax.pdfIn PDF document text
- https://easybuildapp.com/files/uploaded/files/17582582712.pdfIn PDF document text
- http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b779d3c1d71---zukudavemeduser.pdfIn PDF document text
- http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/160861f436b23d---65498411310.pdfIn PDF document text
- https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/cb7bb8c939b4dac0405c1ee493a9e1d0/folepulovogemekazalerebo.pdfIn PDF document text
- http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/5e8877fdb3a3c6589755151490d0e000/42010811148.pdfIn PDF document text
- https://capitaleny.com/wp-content/plugins/super-forms/uploads/php/files/3f90d07cf1b7184f5840862b063d8844/78846222841.pdfIn PDF document text
- https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/160be833f42939---94308897782.pdfIn PDF document text
- http://pampa.be/uploads/userfiles/files/tenumawakox.pdfIn PDF document text
- http://bighost.vn/uploads/userfiles/file/53689666339.pdfIn PDF document text
- http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160963624dd9cd---30111639825.pdfIn PDF document text
- https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160c9cfdbdfb27---79393443079.pdfIn PDF document text
- https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/po5eshucnt7hahrpad3ecj5gr7/zafirawadinezowi.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=three+stooges+meaningPDF 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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f732.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF732	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00010f49.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10F49	10472 bytes
SHA-256: `8508698965038e76a28273b40826f38da165415d9b41b7a3f9da34a1efbe7d19`
`font_02_sfnt_off000126e9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x126E9	17988 bytes
SHA-256: `1c1b5ae971eca6dd5db78ed8ae86abbf07562141bbb18f04c6411ee60794a132`
`font_03_sfnt_off00015560.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15560	11932 bytes
SHA-256: `46befbca2ae869818348ab474967085efe7e01968f49cf01fef6c0525a65b0a3`

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