Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ea898a6a1076590…

MALICIOUS

PDF

81.1 KB Created: 2021-07-01 23:54:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 6ace37c6bd022260f9ee94902882a1cf SHA-1: f21a8f48c98297ea810a5a6afc850698c1c6bcd4 SHA-256: 2ea898a6a10765908250ca6873c5140d01b05b173e0046e36106aa000652928d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The presence of multiple compromised CMS upload links further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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://catamma.ru/uplcv?utm_term=lab+rats+mighty+med+part+1 PDF link annotation
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160900fd57361c---47969436969.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607b0b97342c4---petorivowivofanedi.pdfIn PDF document text
    • https://juegosinflablesarizona.com/files/78590240710.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/16077c63923dd4---99835735542.pdfIn PDF document text
    • https://soechi.com/userfiles/file/mekoguma.pdfIn PDF document text
    • http://ibtaker.ps/userfiles/file/12169406284.pdfIn PDF document text
    • https://aronabritcan.com/userfiles/file/2921902740.pdfIn PDF document text
    • http://allnatureint.com/userfiles/file/gaxegovuzo.pdfIn PDF document text
    • http://fw-simple.com/uploads/files/jekasiledigexaxibiz.pdfIn PDF document text
    • https://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/b7f39c9a27493550ce84de207038878f/51959515477.pdfIn PDF document text
    • https://hospvetcentral.pt/site/upload/file/potiroxid.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/6d3e70daa1128ccd1596f47d3f46040c/manoxiwegunopuloro.pdfIn PDF document text
    • http://datev.hu/ckfinder/userfiles/files/foduzivokuka.pdfIn PDF document text
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dde3ceccc0---23745197829.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/v0eiof0rs2mp822kgrsov0p6f0/gapin.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/jo6u5alvg62oovh337dld9m278/7256526641.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080f44e2b344---bevavumilokamaxexanujeget.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160865ec9eaa38---876957364.pdfIn PDF document text
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609476bc7c5ef---zutunukepewarufufepeji.pdfIn PDF document text
    • https://equantumconsulting.com/files/files/99222289191.pdfIn PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1609f5bd7b724c---dirojo.pdfIn PDF document text
    • https://capitaleny.com/wp-content/plugins/super-forms/uploads/php/files/0b2964e8ae6668029e41acbf812ab696/fulumomuralireke.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a316dc9f136---serewiju.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c238f3366f7---73608212605.pdfIn PDF document text
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/k3ff3sa3hf4jkto106ff0gt860/joripadimetavapal.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_off0000d617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD617 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ee29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE29 18232 bytes
SHA-256: dd1c01c0b960a7ef8855e68c6584a4b8779d96de2fa0e64f3f926765993cdd44
font_02_sfnt_off00011e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E85 10832 bytes
SHA-256: fae934408f5ef141df50f92c24e0e72466f95430bacc7a7c01cc36b13efca5e1

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