Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cceda22651be48f…

MALICIOUS

PDF

75.6 KB Created: 2021-04-02 10:16:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4e34b5d82f53f97d66ea218b22caaa09 SHA-1: 5b62f491fbadd6dfafbd97b681f2f44301d301d7 SHA-256: 8cceda22651be48f6028975159eaa46f1b350feebafa23c9674077038edd39d7
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jumiwimov.ru/strik?utm_term=what+is+logic+in+an+argument PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4479942/normal_6003d7f84e87d.pdfIn PDF document text
    • http://debegezuvume.iblogger.org/is_there_a_sequel_to_odd_thomas_movie.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470968/normal_5ff3ab1bba8ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490369/normal_603162860e3df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465539/normal_602e6c0a0a793.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475995/normal_5ff029632efb9.pdfIn PDF document text
    • http://zaxiluxedexu.getenjoyment.net/drawing_line_graphs_worksheets.pdfIn PDF document text
    • http://lilozekakotelup.sportsontheweb.net/livre_gratuit_pour_apprendre_l_arabe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447084/normal_5ffe48d7b9a42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465701/normal_60071948dfd52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494430/normal_600dd02dc19f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372382/normal_604f6c43477f5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bezexus.rf.gd/42555452618.pdfIn PDF document text
    • https://de99c131-68bf-4271-bcef-cda292486844.filesusr.com/ugd/f5892c_ffde1a911d4d42bb8c91c9fd6272cdac.pdf?index=trueIn PDF document text
    • https://592908bf-dd96-48cc-88d9-ffebbdd10d84.filesusr.com/ugd/f34823_c2fa7968bbbf42a28ed5e1130cca59e3.pdf?index=trueIn PDF document text
    • https://a44a9d9e-3ce9-422e-9b5d-83ef2d4925cb.filesusr.com/ugd/3234e9_90c85f45d0b2415fa32059f0b54198f2.pdf?index=trueIn PDF document text
    • https://153f2bed-3501-4ec5-9468-ed1987511f6d.filesusr.com/ugd/f67134_59c15183dbcb499c9e1fda133c0d6b01.pdf?index=trueIn PDF document text
    • http://xinifaduzinuvu.onlinewebshop.net/3939876471.pdfIn PDF document text
    • https://9e0ebcba-7e04-41ac-afc6-cfc574163c15.filesusr.com/ugd/6725b5_10bec52e6e4c429db75476a3bec20091.pdf?index=trueIn 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://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED00 5228 bytes
SHA-256: 922abf14fe9408085cc554b0e23ca0e60933115745cbea6c555f89c41ecac65d
font_01_sfnt_off0000fea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA8 10328 bytes
SHA-256: 0d91bb841fb50703c59ddd2987bcd8093002b3190cca8be6f79435e153706f48

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