Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b0e6382a9ecc4dd…

MALICIOUS

PDF

77.2 KB Created: 2021-03-27 11:03:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 85a8970fd4e34d1d3fa04ccc6e08c8ed SHA-1: df9bd8b5b59974ad79ef464610fe657457591a98 SHA-256: 6b0e6382a9ecc4dd29fb184263927aac0697d7ee84f28c789c4a3b3936e6ace6
156 Risk Score

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/wix?keyword=rival+stars+college+football+mod+apk PDF link annotation
    • https://cdn.sqhk.co/josedinis/giqjahb/mozokogibuzefotozumowo.pdfIn PDF document text
    • https://sirususi.weebly.com/uploads/1/3/1/4/131407567/b70689ba08069d.pdfIn PDF document text
    • https://vojonabof.weebly.com/uploads/1/3/1/3/131383251/gaxuwuwomi_nagozotiwawo.pdfIn PDF document text
    • http://dosijefa.mypressonline.com/physics_gre_1777_solutions.pdfIn PDF document text
    • https://cdn.sqhk.co/sajatanugeg/cDiejhh/sesotigovatawoka.pdfIn PDF document text
    • http://xariketixagat.mypressonline.com/niv_zondervan_study_bible_premium_leather.pdfIn PDF document text
    • https://vakogupomuniv.weebly.com/uploads/1/3/4/6/134610568/mudokenorizuzafejo.pdfIn PDF document text
    • https://mutefalififide.weebly.com/uploads/1/3/1/3/131383766/tunejetot.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/setigafat/vojibevido.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/little_drummer_boy_sheet_music_in_c.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/86924518617.pdfIn PDF document text
    • http://jabodegodonirad.atwebpages.com/zurigefazawoxe.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/wimuv.pdfIn PDF document text
    • http://vubelifijam.atwebpages.com/engineering_materials_and_processes_book.pdfIn PDF document text
    • https://ce099f17-eb12-430b-a452-8d789b3ee5a8.filesusr.com/ugd/aef5b7_60a140af64b5408dbcfd385f579b8b08.pdf?index=trueIn PDF document text
    • https://beea745c-e446-4317-9ad8-fe501d584c0a.filesusr.com/ugd/9196db_ce1088ca5e7d4d40bd21a837a2eb07e7.pdf?index=trueIn PDF document text
    • https://8319d365-0190-44ee-b2f3-e76f6fd230eb.filesusr.com/ugd/112488_3bb499fd0d9e45de933a010f2fb4d093.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_off0000efe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE8 5744 bytes
SHA-256: 87a2ae545dd2cab9d5bba6e0d4a6200b4e54d99f821fbe4b11cc448140fd40e4
font_01_sfnt_off0001036d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1036D 10548 bytes
SHA-256: 68b8445ef9708e2c3989624f72207d1eb5e3cef20ae90feb9a43eac3030991c0

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