PDF malware analysis — malicious · 079cbef5fe47b746

MALICIOUS

PDF

89.1 KB Created: 2021-07-03 15:01:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 4b47ea763010c9d5479de0e938bdefb8 SHA-1: 5b13a0f40b3b9214658a5c3bb57a95bb9e533fc5 SHA-256: 079cbef5fe47b746327b492420cc340af972e407e15dffdedacfe7e9a0a0f679

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains numerous links hosted on compromised WordPress sites, suggesting a link farm designed to redirect users to malicious or phishing content. No scripts were extracted, but the presence of embedded URLs and the nature of the heuristics point towards a phishing or redirection attack.

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 https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/4fd0a0e96abdf75127d46e869d06de42/taxivamajapilevinodab.pdf In PDF document text
- https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/93vren2f5eonbq96pfg1ehcl10/3597799692.pdfIn PDF document text
- http://meadescafe.com/userfiles/file/46823622835.pdfIn PDF document text
- https://samiznojmo.cz/wp-content/plugins/super-forms/uploads/php/files/0b6bb124d6ac5a6499fbadb667827444/bekadajewadi.pdfIn PDF document text
- https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607788ad27070---84269398295.pdfIn PDF document text
- http://placc.info/up_image/48330333023.pdfIn PDF document text
- https://duext.com/wp-content/plugins/super-forms/uploads/php/files/0f996801afff594ef2401f351879d5be/97698293053.pdfIn PDF document text
- https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f1b520aa97---finuwojew.pdfIn PDF document text
- http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/160b345400fcb5---vilisox.pdfIn PDF document text
- https://www.djluk.co.uk/wp-content/plugins/super-forms/uploads/php/files/dambdbkr5it6v4u7ov3lmvlg6h/57454756681.pdfIn PDF document text
- https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/bee7411e9b6c6b19de9adaf98d27c5b5/rilorakumixoxeda.pdfIn PDF document text
- https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a06f4406e07---74908265728.pdfIn PDF document text
- https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/if8n5fnq0h2eq497vc0ups3pq4/45047691655.pdfIn PDF document text
- http://udmvdpo.ru/images/files/vazegedirufegezotogudomu.pdfIn PDF document text
- http://inciboya.com/resimler/site/files/zananumapenukawivulugeto.pdfIn PDF document text
- https://mauspro.net/upload/files/waziwowudikolufegul.pdfIn PDF document text
- https://cytairtool.com/test/userfiles/file/20210609_f45f3.pdfIn PDF document text
- http://coimbra.hu/uploads/ckfinder/userfiles/files/64611947304.pdfIn PDF document text
- http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/c9a4101e9c93706e50630d891cf37e67/21486595330.pdfIn PDF document text
- https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/dd30620949bea23e930ec579d531061c/vasoti.pdfIn PDF document text
- http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/n3ce6v5l6m0v1t4gd9a7kvedl5/jajizovovufidirasabopi.pdfIn PDF document text
- http://sgpeo.pl/users//file/4067144109.pdfIn PDF document text
- http://thermogroup.ru/uploads/files/gomolajuronudevabulex.pdfIn PDF document text
- https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/mdseap2tv9urapmopro9m4h9vf/41947958141.pdfIn PDF document text
- http://thaoduocvn.com/userfiles/image/file/vepekeja.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=electronic+parameters+in+qsarPDF link annotation
- http://pro.ovh.net/~tribuene/images/banque/file/xuvibavaxolomibiwubomatef.pdfIn PDF document text
- 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_off0000f61b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF61B	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00010e32.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10E32	10664 bytes
SHA-256: `8d5e5f508f720e45b3357dc6d93c45fd1dcf2a78a526d152af68dd5be2bc84eb`
`font_02_sfnt_off00012690.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12690	18192 bytes
SHA-256: `ba9cd4d1b22d0ca2e93240e18a9bb7300e6b35093d388c808dbef501aeb58540`

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