Malicious PDF — malware analysis report

Static analysis result for SHA-256 02832654b01efe67…

MALICIOUS

PDF

78.8 KB Created: 2021-05-23 23:50:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 50c23360043cce8a6d740a4f7a953c87 SHA-1: e20b36cb0f29f2b3b1c64c66dad97a615071665c SHA-256: 02832654b01efe678e1b67198325e78760caa84549e2d9ba0c61165cec3a25ab
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 0.9994

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://gimoguvi.ru/strik?utm_term=les+valeurs+du+conditionnel+pr%25C3%25A9sent+exercices+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388617/normal_601ff4f48164e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426424/normal_5fdb0b5832f81.pdfIn PDF document text
    • https://zuramuvo.weebly.com/uploads/1/3/4/4/134480672/gitojunuteso-jevenuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449405/normal_6059c8b8c1303.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471081/normal_603b9ac777b51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374698/normal_603de76e4892a.pdfIn PDF document text
    • https://fedoxamanisoru.weebly.com/uploads/1/3/4/6/134668372/tevotilekosuzopolet.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/jarawaxanivu/3287492561.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/dejurowifuzisevetulekig.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/zenifedorosuveboxudo.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/80843530551.pdfIn PDF document text
    • https://s3.amazonaws.com/zubata/how_to_think_critically_for_nursing_school.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/40735074170.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/android_auto_not_working_samsung_s8.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/manual_can_opener_target.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/cisco_ise_2._2_evaluation.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/mipakenak.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/xfinity_x1_dvr_box_cost.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/sbi_personal_loan_application_form_online.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/family_life_merit_badge_workbook_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/basic_concepts_of_democracy_section_3_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/barnaba_washa_mp4_video.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/wavepad_audio_editor_for_android.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_off0000f064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF064 5360 bytes
SHA-256: 52fae4e12d7a22a53d1f51393c8f2e35084d24ab5f83499bbe8ccac264171156
font_01_sfnt_off00010279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10279 12708 bytes
SHA-256: 75bfa55cf1215d3bcef2e26aa5018aa31efa63fbc7975c85cc1da2a940c927e1

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