PDF malware analysis — malicious · 07ce9c774a3b1467

MALICIOUS

PDF

79.5 KB Created: 2021-09-03 03:47:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: ab5c301cacd7eb713a359dfc4625ca91 SHA-1: d5c6e6282d8aaea546502d6f9ca57d8a4a57792e SHA-256: 07ce9c774a3b1467ac2923fdecf4efe6c2d3cb1040f7a34834e787b63556cc3e

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains a link farm with numerous URLs pointing to compromised WordPress upload directories, a common tactic for hosting malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the structure and embedded URLs suggest a phishing or malware distribution lure, likely delivered via spearphishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9960

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://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/1cc084b505ed299eb32b3d662469a714/wibugifabegubokeja.pdf In PDF document text
- https://ubitanduk.com/contents//files/20657737366.pdfIn PDF document text
- https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/efb862be305d0e48b7bd2ca8c95a448c/32860246570.pdfIn PDF document text
- http://myshopekerala.com/userfiles/file/bolalobololizikudure.pdfIn PDF document text
- https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/e092c12bee43060cf8633f85626331d0/xanikozigaluruvik.pdfIn PDF document text
- http://steakclubhn.com/campannas/file/vopijejotixegefufowuni.pdfIn PDF document text
- https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/pah6s3csmtl00aq8reg379hdj9/romagapadenizev.pdfIn PDF document text
- http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/nukseoel142bbpm2clt1gu85h7/34375829350.pdfIn PDF document text
- http://aarogyamedico.com/userfiles/file/69917307857.pdfIn PDF document text
- https://budgetparking.ca/admin/uploads/file/wipurusemagobevamonoz.pdfIn PDF document text
- https://treasurehunterdetectors.solar-ovens.net/ckfinder/userfiles/files/41066653181.pdfIn PDF document text
- https://atlantidegattico.it/file/xajalofebu.pdfIn PDF document text
- https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609194558e8d6---1716955726.pdfIn PDF document text
- http://meyanko.com/userfiles/file///6769978629.pdfIn PDF document text
- http://standardamulet.com/files/files/52439536836.pdfIn PDF document text
- https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/2idrn65jjshmklnefib3ocgi3g/69240896752.pdfIn PDF document text
- https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/4um3jvg7ik1sk396t01kag5s34/8732668434.pdfIn PDF document text
- https://total-sport.pl/img/upload/files/suvaxesemevawuf.pdfIn PDF document text
- http://banghetretunhien.com/media/ftp/file/xadukuwiperefilela.pdfIn PDF document text
- https://maconlux.ovh/userfiles/files/gigipusadujizojunusetoleg.pdfIn PDF document text
- https://fiberglasssupplydepot.com/userfiles/file/12697345160.pdfIn PDF document text
- http://spakimthi.com/upload/files/44121133539.pdfIn PDF document text
- https://www.nuyew.academy/wp-content/plugins/super-forms/uploads/php/files/f92e487968daaf9225e7742d72d102f7/juwavogawabapivefofotow.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=familial+dilated+cardiomyopathy+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_off0000d2a7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD2A7	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000eab9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEAB9	17456 bytes
SHA-256: `db2311a680c6d217cc83788cfdc926c4c0a517eaea218ce93789282b409a8346`
`font_02_sfnt_off0001180c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1180C	10704 bytes
SHA-256: `956a2ee51468ecd0ddaf6f0fab65b36fcd36c19b2161e2118110b017f9a02069`

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