Malicious PDF — malware analysis report

Static analysis result for SHA-256 dddb206410c3e30c…

MALICIOUS

PDF

75.3 KB Created: 2021-09-24 16:51:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 19faa055fdb6ec39679cf621f0277559 SHA-1: 6fcefdac6eeb63979f1bd35d2c242bb64fded5cd SHA-256: dddb206410c3e30cc0b60cdd82161eb220665bb601034ccd11909b8d17729864
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, a common technique for executing malicious code within documents. It also features a link farm pointing to multiple domains, including compromised CMS uploads, suggesting an attempt to obscure the final destination and evade detection. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://hotspot-usa.com/js/upload/files/82714560559.pdf In PDF document text
    • http://jinanxintiandi.com/userfiles/files/69653852532.pdfIn PDF document text
    • https://danielfelber.ch/userfiles/file/davusubena.pdfIn PDF document text
    • https://varida-tech.com/ckfinder/userfiles/files/10149297230.pdfIn PDF document text
    • http://svaz-podnikani.cz/files/file/wurirenefetoz.pdfIn PDF document text
    • http://naoshima-habitant.com/images/blog/file/26994075590.pdfIn PDF document text
    • http://slovoveri.org/userfiles/82504209952.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/94eb8256a7a82369b367261640848f8e/zabazulexide.pdfIn PDF document text
    • http://mycoapaisyl.com/webimages/files/42445871302.pdfIn PDF document text
    • http://cravaluos.com/ckfinder/userfiles/files/lufuvasu.pdfIn PDF document text
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/6dcd81fd588316cdbc771c92ff90e3f4/nagujodulotani.pdfIn PDF document text
    • http://windmill-bv.com/userfiles/files/vixoxejefog.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/34a1c7f48eec602d3193ec901a1fa1fa/1042172812.pdfIn PDF document text
    • http://saaretravel.ee/images/file/44144158769.pdfIn PDF document text
    • http://demkapi.com/resimler/files/giwisanetewepa.pdfIn PDF document text
    • https://minhkygroup.com/luutru/files/66132911847.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1614d4c4b9c143---fawoxetokepunogixi.pdfIn PDF document text
    • https://sdhouse.info/ckfinder/userfiles/files/pimididebudegatotepiwo.pdfIn PDF document text
    • https://sunkamalzemecilik.com/userfiles/file/71821140211.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/d13913076ff93692af57087675402608/27282296921.pdfIn PDF document text
    • http://lsphc.com/userfiles/file///monug.pdfIn PDF document text
    • http://seasonsblinds.com/uploads/ckfinder/userfiles/files/31356671622.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=the+thick+of+it+putlockerPDF 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_off0000ba7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA7F 20016 bytes
SHA-256: a139c65e00158a83659623eb55c2c0d691d2851dc365d354e7ae06c91c5eed5a
font_01_sfnt_off0000ee37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE37 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001064e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1064E 10296 bytes
SHA-256: 289e42e0fe8bc599b8c2cb1dac0419dd7efd176dc55ce7b20962ab8152e90d11

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