Malicious PDF — malware analysis report

Static analysis result for SHA-256 30af3da0d89ad4bd…

MALICIOUS

PDF

73.9 KB Created: 2021-09-17 18:48:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: e78f0dd05e3299077145161bff351c4b SHA-1: 4009f4aa3492c45885892df1e0379b340e382b1b SHA-256: 30af3da0d89ad4bd25720084630d229cca72c9b2e20124d36e493714c24c88c2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external URIs and links to compromised WordPress upload storage, indicating a link farm designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious redirection tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://crysiq.ru/uplcv?utm_term=the+tonight+show+starring+jimmy+fallon+live+stream PDF link annotation
    • http://studiofranzoni.eu/userfiles/files/57099768698.pdfIn PDF document text
    • http://thanhtindesign.vn/uploads/image/files/fudevozu.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613256e2186d5---fopixubozemadiveta.pdfIn PDF document text
    • http://slenderclub.cz/ckfinder/userfiles/files/mefoludizefutajuzep.pdfIn PDF document text
    • https://wsbe17hongkong.hk/_bin/ckfinder/userfiles/files/58225274993.pdfIn PDF document text
    • http://vititanon.com/user_img/files/61366668519.pdfIn PDF document text
    • http://ebsenglish.net/_UploadFile/Images/file/74105748435.pdfIn PDF document text
    • https://bccphil.paramedix.biz/uploadfiles/file/xifotimos.pdfIn PDF document text
    • https://weldingportal.it/userfiles/file/dijorezozopenifegef.pdfIn PDF document text
    • http://d-a-s.cn/userfiles/file/fuponapanarawusovale.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/a35ec938d2d5a22d9fc330b8ec3e0124/fadurixezokizaligexara.pdfIn PDF document text
    • http://debten.net/UserFiles/File/70138369858.pdfIn PDF document text
    • http://nsdadventist.org/FCKData/file/moboz.pdfIn PDF document text
    • https://gites-les-bardots.com/userfiles/file/10679737892.pdfIn PDF document text
    • http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cfea858727---fazobusiluvu.pdfIn PDF document text
    • http://ahjygjg.com/upload_fck/file/2021-9-6/20210906143122647153.pdfIn PDF document text
    • http://futurepoolandspa.com/ckfinder/userfiles/files/nimododupapavojapel.pdfIn PDF document text
    • https://koncnc.com/genelresimler/file/borod.pdfIn PDF document text
    • http://art-ball.net/files/file/ralenudebixobuvolesagibiv.pdfIn PDF document text
    • http://tungalag.mn/userfiles/files/lefijasibijadi.pdfIn PDF document text
    • http://zbraneklapka.cz/ckfinder/userfiles/files/tupokoxaxexeveremu.pdfIn PDF document text
    • http://penzionnakrizankach.cz/ckfinder/userfiles/files/jiwibatid.pdfIn PDF document text
    • http://vdavloeren.be/userfiles/files/61835490739.pdfIn PDF document text
    • http://studio5r.com/userfiles/files/29039693685.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_off0000ba4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA4B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD262 11020 bytes
SHA-256: 4a74f0b61bf6d1eb6da1da83e255cad1818aaa1b884db1091a522513bfdbe394
font_02_sfnt_off0000ebe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE1 17072 bytes
SHA-256: 3f134559b471b8b567301b34a26b46e9984c372a169bc8ba76a0e56c818242c4

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