Malicious PDF — malware analysis report

Static analysis result for SHA-256 047413e466afb67d…

MALICIOUS

PDF

86.4 KB Created: 2021-07-07 20:30:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 96aced18c0acb02e4a450222312b2592 SHA-1: 3c18c101cc1ccd895b73c6553bb53e41afbeb472 SHA-256: 047413e466afb67dac90b6347ac7d818d62b06873a2ac2ebe5125e6f5dd10dac
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, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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=seeing+44+and+444 PDF link annotation
    • http://musikpark-live.de/userfiles/file/6062210691.pdfIn PDF document text
    • http://southfieldhigh.com/clients/a/a2/a202dccd336a30abee2d0a4364b9f07c/File/5934307048.pdfIn PDF document text
    • https://anmoul.com/userfiles/file/xezenadinonoporozo.pdfIn PDF document text
    • http://fly.no1-yes.com/userfiles/file/nufolezunupojogitusizu.pdfIn PDF document text
    • https://ebdaatcoop.com/userfiles/files/joxezaxukere.pdfIn PDF document text
    • http://firegallery.ru/img/upload/kajirotuso.pdfIn PDF document text
    • http://zae.me/datafiles/file/monisabadazoruroju.pdfIn PDF document text
    • https://serviceservice.eu/userfiles/file/tudaxajisobometakug.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072bc1d2835a---42247325762.pdfIn PDF document text
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609d38f3d19c0---18678366287.pdfIn PDF document text
    • http://orgue-chantepie.info/FCKeditor/upload/file/sunokudoratizuja.pdfIn PDF document text
    • http://sanders-scottfamily.com/clients/26926/File/daxuxeleluzafiwimadoluda.pdfIn PDF document text
    • https://zlatartopalovic.rs//files/nebunudemigifefabinefam.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/781899d429519b9f2b7c6238567db812/tezekezexedifezu.pdfIn PDF document text
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2aecd3ec9a---13860269458.pdfIn PDF document text
    • https://dineflon.com//files/39167397402.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609afb48c4769---jegawe.pdfIn PDF document text
    • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/ppfisr22ettb6mh93kkjhraipg/21068844573.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/kmob439amegkhgq8sjngtc0u08/61714734505.pdfIn PDF document text
    • http://tfh-filter.hu/_user/file/89290614113.pdfIn PDF document text
    • http://muacuoi.vn/Pictures/files/xuzujijuzukovolib.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc34b1718e---60789314754.pdfIn PDF document text
    • http://gibson100.com/clients/870224/File/pafirim.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_off0000f039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF039 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001084b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1084B 17612 bytes
SHA-256: f2966adf4ddedfef21033a613e97398d16a66ec4e8e182ec469f9888f151241c
font_02_sfnt_off00013665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13665 10044 bytes
SHA-256: b50cdac055fe944095f032c07c7d828e349cf1cd25295ce3ce9df8362235c1f2

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