Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d222e428a794c2b…

MALICIOUS

PDF

76.6 KB Created: 2021-09-04 11:47:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: e78c7d6ed1047971670978ae95224293 SHA-1: 9086725d3e1835e160d78b2e20134470d3df82ff SHA-256: 0d222e428a794c2b4a51c8aeaf675f7be35cc8a0acf701c60efa07b38e8ddb46
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 pointing to compromised WordPress upload directories and disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/247fdd5a80c6a0448eae2fc672c01a00/78976287110.pdf In PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce7488290f---firirorarewudif.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ae817fa8f24---bosebijapuwupemu.pdfIn PDF document text
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/16075111fb1abf---wirudipap.pdfIn PDF document text
    • http://wagnerpc.com/userfiles/files/9372268717.pdfIn PDF document text
    • https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/afqp7pi9sf3em9c64j18c8hfhk/ganabalugix.pdfIn PDF document text
    • http://altaprecision.com/userfiles/file/kuxumupiwi.pdfIn PDF document text
    • http://www.valathors.com/ckfinder/userfiles/files/49639243880.pdfIn PDF document text
    • http://freehajjandumrah.com/admin/admin/uploadfiles/file/59452558797.pdfIn PDF document text
    • http://igigeothermal.jp/userfiles/file/4549925111.pdfIn PDF document text
    • http://jcon-aps.dk/userfiles/file/31524724015.pdfIn PDF document text
    • http://getem.pl/files/file/ludidalid.pdfIn PDF document text
    • https://www.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/160d3940bcb1de---52367157032.pdfIn PDF document text
    • http://agataklimowska.pl/userfiles/file/kosemutagegopazi.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d27cdfa5d4b---8810479913.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/160778f2fa15df---rulisofibupivotefivug.pdfIn PDF document text
    • https://balaji-technology.com/userfiles/file/mifawoz.pdfIn PDF document text
    • https://anjingliar.com/contents/files/19769060656.pdfIn PDF document text
    • https://artedeeducar.com.br/ckfinder/userfiles/files/rigefofomedewisu.pdfIn PDF document text
    • http://aire-limpio.com/img/editor/file/30603453077.pdfIn PDF document text
    • http://kimhoatra.com/upload/fckimagesfile/13910652563.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=phytochemicals+in+garlic+pdfPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC593 17456 bytes
SHA-256: 41837bb2d158733c3a31808e67d27d3ed39c70781bf6428285e974be130e4b75
font_01_sfnt_off0000f2cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CF 11184 bytes
SHA-256: a0e2cb1333d4c310f1e3342fae116fa4f355b40e847987a9b8779af894a687a5
font_02_sfnt_off00010c9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C9F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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