Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0eecab7bc3ffaad…

MALICIOUS

PDF

77.0 KB Created: 2021-09-02 18:05:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 14f95e6fdb4590b2eaa2b359df2ae1e8 SHA-1: 15b4f38d2d2b21b16b5f5714872ff5c2b4204467 SHA-256: e0eecab7bc3ffaaddc315c70bc83b4258ac1876b7fd7c8cc93838c6f8645c86f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to potentially compromised WordPress sites, suggesting it acts as a link farm to distribute or redirect users to malicious content. The PDF's structure and embedded links indicate an attempt to masquerade as legitimate content while directing users to external, untrusted resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/6253e23b19d630cde25d699ae9918482/99007293594.pdf In PDF document text
    • http://condosworld.com/abisol1/userfiles/files/tesikokejavewanukezufe.pdfIn PDF document text
    • http://www.communityheroesproject.org/wp-content/plugins/formcraft/file-upload/server/content/files/1611fc9b6d50d1---57316888537.pdfIn PDF document text
    • https://wisserarm.nl/app/webroot/files/userfiles/files/zuwonibatinogil.pdfIn PDF document text
    • http://timavoshipsupply.it/userfiles/file/duxozojazanuwizu.pdfIn PDF document text
    • http://asiavent.com/UserFiles/file///78119029061.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/vatutipamimezu.pdfIn PDF document text
    • https://momsgardenfoods.com/ckfinder/userfiles/files/20960456599.pdfIn PDF document text
    • http://guojingmall.com/userfiles/file///luwiditevepipipidufozir.pdfIn PDF document text
    • https://horacebatten.com/ckfinder/userfiles/files/78798355191.pdfIn PDF document text
    • http://polaryachts.com/res/wysiwyg/file/63298726107.pdfIn PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/51e78406212da0cab36c561b1425ee40/kasifemofefezixepurur.pdfIn PDF document text
    • http://onellenorzes.com/uploads/files/27902614749.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6df2afd1d---sudibudikegazuvixu.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d551e1aa17f---14303179091.pdfIn PDF document text
    • https://firmabudowlanawalczak.pl/web/uploads/files/87950847496.pdfIn PDF document text
    • https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/445qf1vuahfak8bog4il08vl44/lixemativivijubaxit.pdfIn PDF document text
    • http://5lovestartw.com/CKEdit/upload/files/jesozisupiwavetitu.pdfIn PDF document text
    • http://www.motionmantra.com/userfiles/files/gudaxubituxosusiga.pdfIn PDF document text
    • https://lightspec.ca/wp-content/plugins/super-forms/uploads/php/files/8d6f143583155d45b78379b475b2814e/peruki.pdfIn PDF document text
    • http://cokhisah.com/webroot/img/files/jekoseb.pdfIn PDF document text
    • http://katachizu.com/img/news/files/1053950103.pdfIn PDF document text
    • http://mobilni-kadernictvi.cz/files/file/gutazofemuxida.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=manual+orange+juicer+argosPDF 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_off0000ca18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA18 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e22f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE22F 10528 bytes
SHA-256: c78f9d76a515ef3ba67a6e3c7a0ca4fc5b99a096a5146fab05c94c9d9a63e578
font_02_sfnt_off0000fa38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA38 17188 bytes
SHA-256: 124ae76103f61dd0b2fb778e236c59d8eb08de8d5c6c72d36f9291f4db259e70

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