Malicious PDF — malware analysis report

Static analysis result for SHA-256 e016d30f61ba01af…

MALICIOUS

PDF

84.1 KB Created: 2021-07-25 16:16:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 346a77037766b0a2c8db27a04b118b82 SHA-1: e4c6d8f7dec341672d6cd195d88d2e10e9b4f7cc SHA-256: e016d30f61ba01affcc433c95c803d3280f37395a24119296ff1d07e6e0a28fa
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress sites, suggesting it functions as a link farm to distribute malicious content. While no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://amirep.com/wp-content/plugins/super-forms/uploads/php/files/3cbea1ec8a1d4762fdd2684cc4f112eb/vamalegibujitizezox.pdf In PDF document text
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9c9d0af11f---kenim.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609f73d92cbc6---81489746947.pdfIn PDF document text
    • http://anhuifan.com/upload_fck/file/2021-4-29/20210429083052547841.pdfIn PDF document text
    • http://www.hangmandigital.com/files/file/kisalibijoxepududirira.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/0a643189ed3724b3b034d23758a1384e/jotapasoberuzeluxun.pdfIn PDF document text
    • https://www.westcountrystoves.co.uk/wp-content/plugins/super-forms/uploads/php/files/9987ac66fb68c2bd3bfa82a8aa40e117/surebidibopasufuwix.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/81e0ab6b11fffb61389230eca1382180/91533891162.pdfIn PDF document text
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160ced5919dbb4---65263416920.pdfIn PDF document text
    • http://www.pics4us.de/userfiles/file/54233281281.pdfIn PDF document text
    • http://yasaitogo.com/uploads/files/47919002004.pdfIn PDF document text
    • https://bodegoncriollo.com/userfiles/file/nitobudaj.pdfIn PDF document text
    • http://www.sandzthabapanel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607e1848380aa---penunapakam.pdfIn PDF document text
    • https://cleaner.pl/userfiles/file/likidusejukuli.pdfIn PDF document text
    • https://alice-immo.com/userfiles/file/sukase.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/93fb240edd0043154fa5b58c9cb4e020/5890679459.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/556caa6e0e3560107bfff6d4763c2e94/nelofimiwatopepuno.pdfIn PDF document text
    • https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/59b5ca051c41fcd97446923ffea096a9/namavoxekuva.pdfIn PDF document text
    • http://medicaldistri.com/ckfinder_files/files/77809892210.pdfIn PDF document text
    • https://www.natursany.com//ckfinder/userfiles/files/mibudamosukobo.pdfIn PDF document text
    • http://icltindia.in/userfiles/file/40260354754.pdfIn PDF document text
    • http://villa-margherita.biz/userfiles/files/79246968566.pdfIn PDF document text
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/02434244703ece840ca71cb752fc2a46/75790370671.pdfIn PDF document text
    • http://ghalemdi.com/userfiles/file/54644098298.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=libro+para+colorear+de+anatomiaPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cdaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDAA 16140 bytes
SHA-256: 00b1f632e8afe72716c8bcdb76b7901b56c060d1dc0f96f3f5c1b8373b85735b
font_01_sfnt_off0000e327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE327 10604 bytes
SHA-256: e275d984bc46e1a76fe0c91a69556d2642e4321e70ee63083fb58bc97c97d98e
font_02_sfnt_off0000fb13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB13 17852 bytes
SHA-256: 285e4df11589ff9c5deaff8c92140de74cc8ec3b93f914c88bf812d0f27e5db7
font_03_sfnt_off00012856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12856 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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