Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed14ad354f981cdb…

MALICIOUS

PDF

71.4 KB Created: 2021-09-13 03:53:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 09e1898bfa94d92a81c4751edab7277a SHA-1: 433ba26978de329d6e5c129a311cbf51298f2a0a SHA-256: ed14ad354f981cdb12e215bcf3fcd5832eda10d9f200f5fc0b68771ae34974dc
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, serving as a link farm. Heuristics indicate these links lead to other malicious PDF files, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://allytemp.ru/uplcv?utm_term=can+android+group+text+with+iphone PDF link annotation
    • http://ed-union05.ru/files/file/dibuzivipapix.pdfIn PDF document text
    • https://t2sc.me/userfiles/dajegore.pdfIn PDF document text
    • https://www.zochrot.org/ckfinder/userfiles/files/xizatolemo.pdfIn PDF document text
    • https://eslms.com/userfiles/file/jizesojibesobofifopab.pdfIn PDF document text
    • http://fabrikando.com/cmsimple/images/file/gikorusi.pdfIn PDF document text
    • https://alnahamgroup.com/userfiles/file/fudewokeg.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/1613655aa528bb---siwizoziko.pdfIn PDF document text
    • http://carrozzeriardue.it/userfiles/files/85597043073.pdfIn PDF document text
    • https://giritrademark.com/content_files/files/wurupelatedukixomejajuken.pdfIn PDF document text
    • https://liantoong.com/archive/upload/files/pijugimelog.pdfIn PDF document text
    • http://jnnycc.org/userfiles/file/xuzire.pdfIn PDF document text
    • http://beachfirebrands.com/userfiles/file/21337480444.pdfIn PDF document text
    • https://ms2gacor.com/contents/files/97703537872.pdfIn PDF document text
    • https://interstudy.net/userfiles/file/26078429147.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/tlp2be66m8ji3bpl9o9tgo72ar/40476364816.pdfIn PDF document text
    • http://somsit.com/ckfinder/userfiles/files/vivomajotaniguwa.pdfIn PDF document text
    • https://jewfri.kr/files/image/files/68550265500.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613410465f5d9---gudusosomilo.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/16134368eece94---28583383908.pdfIn PDF document text
    • http://jtipartner.com/ckfinder/userfiles/files/memilevelisar.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/3e933d71f764fe4b7295dff0cced5c3b/6762055054.pdfIn PDF document text
    • http://marasintl.com/public/ckfinderuploads/files/4272351519.pdfIn PDF document text
    • http://qlionshousing.ca/userfiles/file/40539117200.pdfIn PDF document text
    • http://vladjurnalist.ru/archive/file/17087903222.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b4d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4D0 10776 bytes
SHA-256: 9234cd2d60a618426a45a0d9a8ba7e420d0bb2d9930f20852f595fe847332fb8
font_01_sfnt_off0000cd70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD70 16888 bytes
SHA-256: 23fc7acaa48de2a07ee2cfd62b48c131b70305a6ae4d023d88a7ac8aaad85d78
font_02_sfnt_off0000f82f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF82F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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