Malicious PDF — malware analysis report

Static analysis result for SHA-256 f972b590ba2b566e…

MALICIOUS

PDF

78.0 KB Created: 2021-03-15 21:32:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 8b771211d7be0ae668f89b4577dee93a SHA-1: 3d1853fa59db2d5565ddbbe4f5736235d199718b SHA-256: f972b590ba2b566e47c83e923ca2f7a31983102e364b1081b1eeec17d42ca61c
96 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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://mezovuduw.ru/award?keyword=physical+health+assessment+pdf PDF link annotation
    • https://tipolapuponawog.weebly.com/uploads/1/3/2/6/132696210/rotakasu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423443/normal_60044cf4b0c23.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456369/normal_5fc809ae6075a.pdfIn PDF document text
    • https://tavadubamik.weebly.com/uploads/1/3/4/4/134473349/ff0a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492253/normal_5fed612d26430.pdfIn PDF document text
    • https://topizamo.weebly.com/uploads/1/3/4/4/134435864/8026524.pdfIn PDF document text
    • http://rufejupewanun.iblogger.org/tus_zonas_erroneas_dr_wayne_w_dyer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/kositisugaladoji.pdfIn PDF document text
    • http://bopevevene.epizy.com/wedirelosuxusobide.pdfIn PDF document text
    • https://6f847715-c85a-45d9-ae5c-7c68cc800588.filesusr.com/ugd/6e100b_7b2f7ca87aab4dbaa74509e27e31c525.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d194ddf5-92e8-47ac-8af8-cf346b02a5e4/ligawavutenedo.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/adaptive_functioning_psychology_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/what_is_the_role_of_the_risk_management_function_in_a_business_organization.pdfIn PDF document text
    • http://nojavunol.epizy.com/zixamil.pdfIn PDF document text
    • https://6eed613e-cbae-405e-b458-9655ef9033f8.filesusr.com/ugd/e4f6f0_8a53288d8a444a5e882fbfea055b1710.pdf?index=trueIn PDF document text
    • http://gusutawidike.epizy.com/kakizenijasibunisew.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/1734-aentr_set_ip_address.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/154a8557-2911-488e-b991-5dc80e9babd1/legacy_of_the_drow_siege_of_darkness.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f82765d4-bc24-469f-a3ff-8ae84d9fe48e/wojig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c8ccca4-2e38-4c78-9441-db4d988400ea/xazobasasaruzoma.pdfIn PDF document text
    • http://xabigobagexuk.epizy.com/22339955619.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f249.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF249 5404 bytes
SHA-256: 4794e863778d54496b46bad24093341d36d8af68d48da0870fc22ca1cdd4279d
font_01_sfnt_off00010496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10496 11188 bytes
SHA-256: f56d295438dbfb1f246c3dffbc8de097712125624d9c1d84717d92358e071e91

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