Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6022522cddca766…

MALICIOUS

PDF

84.5 KB Created: 2021-08-20 23:24:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 0f3d4505ca8608579c890cf42479c71f SHA-1: 07f54dc360b07673420f5426ed1a80112fe7d852 SHA-256: d6022522cddca7663dd89cd0b5b8f38ce6f15e456784ca8b320107680d37170e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to compromised CMS upload directories and disposable domains, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/16087f20f3fd9f---70383821920.pdf In PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160bbfa9ce1ed3---92858329979.pdfIn PDF document text
    • http://littlepearlspublishing.in/data/eimages/file/82504981840.pdfIn PDF document text
    • https://alternatifhirdavat.com/upload/ckfinder/files/68575000622.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/f904f5148cd3661d8c867d1a8f47b128/28318909632.pdfIn PDF document text
    • https://szelvedojavitasmiskolc.hu/files/files/24053499464.pdfIn PDF document text
    • https://vestol.bg/files/file/bokimow.pdfIn PDF document text
    • http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/2jqttmr0aj1mv8dq47g3p5ukg6/87247975172.pdfIn PDF document text
    • https://www.dartmusicfestival.co.uk/wp-content/plugins/super-forms/uploads/php/files/5965e8e21bd6fa2fdd7df6fda930cc7c/legatagok.pdfIn PDF document text
    • http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087c2473749d---96675558066.pdfIn PDF document text
    • http://king-ber.com/UploadFiles/file/20210811012416658.pdfIn PDF document text
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a77fb013805---jorini.pdfIn PDF document text
    • https://vegas-shop.net/uploads/files/48089854497.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/32391006670.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/160949fc517f49---65329878198.pdfIn PDF document text
    • http://abbwingslynnhaven.com/uploads/files/62180972277.pdfIn PDF document text
    • https://ankaratemizlikcim.com/depo/sayfaresim/file/72965804354.pdfIn PDF document text
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/325f152bc60cbe132a0112fc311cb9c8/tizuxija.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/54f83199462d0a3658a681163152bbbd/luperekarewanuduvofek.pdfIn PDF document text
    • https://himarco.ir/basefile/himarcoir/files/33010195137.pdfIn PDF document text
    • https://metricgroup.it/uploads/file/86718238638.pdfIn PDF document text
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f451c72971---kavapomamagowamazobumege.pdfIn PDF document text
    • https://lightspec.ca/wp-content/plugins/super-forms/uploads/php/files/b3937baf37e94d068376e5a780cda5d5/59367073645.pdfIn PDF document text
    • http://itineraire-consulting.com/ckfinder/userfiles/files/repagadulajovo.pdfIn PDF document text
    • https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/a998b40a7f20f22ec4a18df246b1d263/gebupova.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=los+mejores+libros+de+nutrici%C3%B3n+deportiva+pdf+gratisPDF 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.

FilenameKindSourceSize
font_00_sfnt_off0000e347.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE347 17176 bytes
SHA-256: aaadc021ee0c2c169fb948908d512c42867471d8fac579d14d5dac9441dcf655
font_01_sfnt_off00010ebd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EBD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000126d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126D4 11492 bytes
SHA-256: 7f5ba2d7f43ad26bce9235adf93ac869662d3643da9a89906e7dd3f94b9cd615