PDF malware analysis — malicious · 195d623815768e20

MALICIOUS

PDF

83.1 KB Created: 2021-06-27 02:13:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20

MD5: 1dfa6c3ded6c2117d1dcf4c7f9124479 SHA-1: c4f630d99a8ac5b5570c9973415fc6918045452f SHA-256: 195d623815768e20bd5958b294cf9c48a063ca2fc13f884f83d7439defee187e

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by a machine learning classifier and ClamAV as malicious. It functions as a link farm, containing numerous URLs that point to compromised WordPress sites, specifically within form upload directories. These links likely serve as a distribution point for further malicious payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9833

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://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c869be4d582---rolipirog.pdf In PDF document text
- https://islandsvefir.is/wp-content/plugins/super-forms/uploads/php/files/h7ogsk45n328msd7tvssetgarq/77437306225.pdfIn PDF document text
- http://shsalumniauditorium.org/clients/f/fa/fa32e32112b7cad64a7d7e78b95ed61b/File/90166518569.pdfIn PDF document text
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/3b3ufq12jvdh7qr7plu6u9i056/nipupuwozadif.pdfIn PDF document text
- https://brandonsmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/7di39f62h0lroa820v3a5g7b26/63284453895.pdfIn PDF document text
- http://kotolantopeni.cz/file/batibavifatawesozupafi.pdfIn PDF document text
- https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f51781e7e6---linetik.pdfIn PDF document text
- http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce1e0e558f---mogegemamamugafanaxazobi.pdfIn PDF document text
- https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/d7990609214f88ab6ef969e948a5c7a6/fobub.pdfIn PDF document text
- https://activepymes.com/pub/file/4986907340.pdfIn PDF document text
- https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/ofvpdrp2679p4oq6hnd6qjee03/39965643393.pdfIn PDF document text
- http://digitalpolicycouncil.com/imagenes/file/gemaginixitov.pdfIn PDF document text
- http://auto-spec.ca/fck/file/97469588972.pdfIn PDF document text
- https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607626a06edfc---gejidebos.pdfIn PDF document text
- http://aire-limpio.com/img/editor/file/pukulugalupurokelixakax.pdfIn PDF document text
- http://accessiblevehicleservices.com/userfiles/file/41686341749.pdfIn PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a06209d6da9---jejajagefi.pdfIn PDF document text
- https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/0d65e8170172714e52561f7a17bab86e/18419304443.pdfIn PDF document text
- https://thewaves.net/wp-content/plugins/super-forms/uploads/php/files/vf9jmba5oamiiagk9g96s9epcm/2496915920.pdfIn PDF document text
- https://nutricionintravenosa.com/wp-content/plugins/super-forms/uploads/php/files/ac7e4677eb51f84596866734305f1bb5/14870894798.pdfIn PDF document text
- http://suachuadienlanhhoaphat.com/hinhanh_fckeditor/file/xelafawebozasozi.pdfIn PDF document text
- http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160cf83efb440e---bonifisiwexuwo.pdfIn PDF document text
- http://gialtour.it/themes/userfiles//files/18314772237.pdfIn PDF document text
- http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160756eadd03f1---tojibewipidesuzaxe.pdfIn PDF document text
- https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608166e1ba5be---99284616321.pdfIn PDF document text
- http://deepakbatteries.com/uploads/file/49117055578.pdfIn PDF document text
- http://saokienviet.com/uploads/image/files/70910496537.pdfIn PDF document text
- https://etonbio.com/newsLetters/images/file/35207595767.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=cupcakes+and+beyondPDF 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_off0000df5e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDF5E	17920 bytes
SHA-256: `02aec201613e931dbf078309c21072c67f3e68348bba57a82770e5fbc686f9a1`
`font_01_sfnt_off00010eaa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10EAA	10648 bytes
SHA-256: `d1e86141036f2f692eac588bff186c001f989f9f737840cc68a5cccc170bda8f`
`font_02_sfnt_off00012703.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12703	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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