Malicious PDF — malware analysis report

Static analysis result for SHA-256 e011e0412af6c644…

MALICIOUS

PDF

75.7 KB Created: 2021-04-05 15:09:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 76b9f2b44325c4acdc3b303e948d2211 SHA-1: 72b1ba0db970d64980d3ed9702c1070ea0ee2892 SHA-256: e011e0412af6c644d68b9671175ba68f5ceeeee02988608e7eb81412bbe8f3d4
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9996

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 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://xajibur.ru/aws?utm_term=supernatural+ways+of+royalty+curriculum PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4472221/normal_6007b4384b091.pdfIn PDF document text
    • http://dalkomis.website/knot_tying_kit_ukj2bmw.pdfIn PDF document text
    • http://miiliioner.xyz/somewhere_over_the_rainbow_piano_shecty8j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369491/normal_60664172c97ec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469370/normal_5fdead69e535d.pdfIn PDF document text
    • http://artistichomesolutions.com/indefinite_pronouns_worksheets_with_answersmx34j.pdfIn PDF document text
    • https://cdn.sqhk.co/kiwametin/gehiSij/julio_iglesias_my_life_greatest_hits_album.pdfIn PDF document text
    • https://cdn.sqhk.co/rebamomidaw/ejfe1jc/kubel.pdfIn PDF document text
    • http://summ-green.fun/22259083376yxzvs.pdfIn PDF document text
    • http://coolstudent.space/sojurrlq2n.pdfIn PDF document text
    • https://cdn.sqhk.co/vedanoderifu/l2vjdGx/john_gba_lite_pokemon.pdfIn PDF document text
    • https://cdn.sqhk.co/wezopexa/dNhgfig/prestonplayz_among_us.pdfIn PDF document text
    • https://cdn.sqhk.co/sofilita/idBmidi/photo_editor_pro_free_download_for_windows_7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472495/normal_60494e6442a66.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/kagedatabujo/83007937718.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/53854693105.pdfIn PDF document text
    • http://karababeso.rf.gd/scatter_plot_correlation_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c9187c5-b0cb-47d7-b77e-184d45370407/what_coordinate_system_does_autocad_use.pdfIn PDF document text
    • http://pavinudoj.epizy.com/57573699524.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cca3aafa-9e6b-494e-803e-9edd2433c08b/vexutakekupaborixevube.pdfIn PDF document text
    • http://xakorixomunaniw.epizy.com/31635613398.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

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_off0000ea17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA17 5460 bytes
SHA-256: 4cca4006262e3d562b005866465960ad44bbf83ae42339e8d24a2a4e917a47a1
font_01_sfnt_off0000fcad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCAD 10596 bytes
SHA-256: 9563697337480b21fa05c6fc09517fbe3557ce75ae642a2067b5b436a4a3755d

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