Malicious PDF — malware analysis report

Static analysis result for SHA-256 76547ee6f867165b…

MALICIOUS

PDF

73.3 KB Created: 2021-09-05 07:13:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 233922c5c5e4bfbc676b6ddd04a5c8de SHA-1: fb88d8c708cf8c8ed9d7849bea77ead32131b842 SHA-256: 76547ee6f867165bc4c791c57f5701a1613d9bf4c2211496b6af34bd1dfa0c72
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external URIs and is flagged as a link farm, suggesting it's designed to redirect users to malicious websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document, potentially leveraging embedded JavaScript for redirection or exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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=cbse+class+10+biology+chapter+1+notes+pdf PDF link annotation
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160879f1d8a8bd---jilubuvifunepusadodawor.pdfIn PDF document text
    • http://campbellelectronics.com/uploads/wokalutizazofotafopepose.pdfIn PDF document text
    • https://tectrongim.com/uploads/files/kixabexuruma.pdfIn PDF document text
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613101bb28ea2---zulatum.pdfIn PDF document text
    • http://angarakshaksecurity.com/userfiles/file/notalidagano.pdfIn PDF document text
    • https://wendi101.com/userfiles/file/45643331793.pdfIn PDF document text
    • http://ylphs.com/ckfinder/userfiles/files/43538553859.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/160c1db21bc2d8---48968725700.pdfIn PDF document text
    • http://dynamic1984.com/user_file/file/xuborodologirowijove.pdfIn PDF document text
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/2e87d88d10d1ee25b5524f4830ca1870/21589104485.pdfIn PDF document text
    • https://investmentskillsgroup.com/images/userfiles/file/38364825960.pdfIn PDF document text
    • http://ranjitabiswas.com/userfiles/files/81239371941.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609c09e75a2db---rujawidovur.pdfIn PDF document text
    • http://matchonusa.com/uploads/files/vubujo.pdfIn PDF document text
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608832f0ca4c6---48731903120.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/f705e47014ff97d7c4ff0f45ce778795/bozakofakegolopamunegalez.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081c4bb7c352---25841440509.pdfIn PDF document text
    • http://www.euro-fly.eu/userfiles/files/67602746932.pdfIn PDF document text
    • http://itineraire-consulting.com/ckfinder/userfiles/files/81086487656.pdfIn PDF document text
    • http://sunriverps.com/data/editor/file/kugosexum.pdfIn PDF document text
    • https://bhsbeacon.com/FCKeditor/file/25377390865.pdfIn PDF document text
    • http://www.weilandensemble.nl/ckfinder/userfiles/files/zogodegiwaxeneligila.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/5dshf5q8bd5u1dpih3np47rqt7/70529715085.pdfIn PDF document text
    • https://monacollection.ua/wp-content/plugins/super-forms/uploads/php/files/56fe5e15f9d068f256d142deb00064d4/35880561284.pdfIn PDF document text
    • https://adikkedua.com/contents//files/fuvewatu.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_off0000baa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAA2 16600 bytes
SHA-256: 8aa1f3a6b84c47b2f572ef6d32a5a9a0bb374399120cf3f5fe68daaea6f31cad
font_01_sfnt_off0000e4f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F1 11360 bytes
SHA-256: e903cf5f4c16698f90e307f74e1837feab1a82740d6218576f886ecef16555dd
font_02_sfnt_off0000ff4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF4B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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