Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba8e6836eaa1817a…

MALICIOUS

PDF

89.3 KB Created: 2021-09-04 01:00:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: fca7247a74b92b00b5af8d497f0de68d SHA-1: 86b6df55527d4bd18e310344222bf6b6c1f180db SHA-256: ba8e6836eaa1817ac45061a19a9333890fa291af9c8b70129747c529980cf46a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or malware distribution intent. It functions as a link farm, containing numerous URLs that point to compromised WordPress upload directories and other potentially malicious sites. The primary goal appears to be redirecting users to external, untrusted content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://cructi.ru/uplcv?utm_term=tourism+and+intangible+cultural+heritage+pdf PDF link annotation
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1610a177094d87---85086048645.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/16129db8560eae---64764495745.pdfIn PDF document text
    • http://thsport.dk/ckfinder/userfiles/files/31084979320.pdfIn PDF document text
    • http://glina-master.ru/admin/ckfinder/userfiles/files/zarajarapemeli.pdfIn PDF document text
    • http://clevio.biz/fckUpload/file/73931553051.pdfIn PDF document text
    • http://aaaexpressac.com/userfiles/file/pexaferipudilufilixoki.pdfIn PDF document text
    • https://clubslotalmatriche.com/calcas/file/tijaxezeposizuvigapefo.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/10509811950.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/9409h0lrrjlh3jd5pr48t7i7mt/85136326400.pdfIn PDF document text
    • http://domgr11.ru/uploads/files/77196742349.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/5d5aaa4ab40854093bca97b0c8a76b30/samupiwezexulowo.pdfIn PDF document text
    • https://juraganmonyet.com/contents//files/xelomidiwogifi.pdfIn PDF document text
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/67l62c5blcjg1if2n9m39ju522/91341872997.pdfIn PDF document text
    • http://pcccphucvinh.com/upload/files/60328262229.pdfIn PDF document text
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608caf957680c---24550798810.pdfIn PDF document text
    • https://aquafilling.com/userfiles/file/5066084450.pdfIn PDF document text
    • http://planetamama.ru/files/file/18508148750.pdfIn PDF document text
    • http://barrybusiness-crm.com/ressource/devis-photo/files/61206127398.pdfIn PDF document text
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16120e21c469e0---67967223003.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/d855g6ma4agvdl4mg05if95l4h/47866118004.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/160793996da177---58192620964.pdfIn PDF document text
    • http://transcash.com/ci/userfiles/files/ziwunuzelupus.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/16084cea8db60d---36893718600.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a36d22b4c54---gojerefugagubepaliled.pdfIn PDF document text
    • http://lmleadmanagement.com/userfiles/files/ratenodidupojakebena.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F9 18812 bytes
SHA-256: e56fe1c543b64640f37f715f90a721634a623010e4a5941495f4cf67135fa811
font_01_sfnt_off00012516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12516 11268 bytes
SHA-256: 164502e0979cce7eb59d48ba81dd474339b4bd8d1983ef761958fe7ea987fbb9
font_02_sfnt_off00013eeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EEB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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