Malicious PDF — malware analysis report

Static analysis result for SHA-256 32e5c205ef5095f4…

MALICIOUS

PDF

88.9 KB Created: 2021-05-20 11:31:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2fd8834fc18e189b4031d5fabd043b3f SHA-1: 0638da251da19171ad6d9444b84c721950e20ce2 SHA-256: 32e5c205ef5095f4dfff03b72a8d1c4bb18a5ee827187b67de299b1f6746da1b
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 0.9980

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://jacksth.ru/strik?utm_term=cuantos+pies+equivale+un+metro+cuadrado PDF link annotation
    • https://ladetizor.weebly.com/uploads/1/3/4/7/134731735/bekubu.pdfIn PDF document text
    • https://bukodagunotul.weebly.com/uploads/1/3/4/0/134012399/4980490.pdfIn PDF document text
    • https://zogoporev.weebly.com/uploads/1/3/1/3/131381602/1946261.pdfIn PDF document text
    • https://dizalojowu.weebly.com/uploads/1/3/4/8/134866254/7e8a1.pdfIn PDF document text
    • https://disesusobabetom.weebly.com/uploads/1/3/0/8/130814900/zavevomemivozef.pdfIn PDF document text
    • https://vorujefam.weebly.com/uploads/1/3/4/3/134322124/256432daa.pdfIn PDF document text
    • https://fanawilixu.weebly.com/uploads/1/3/1/4/131408209/ziwet.pdfIn PDF document text
    • https://xaperosojemi.weebly.com/uploads/1/3/0/9/130969510/tinad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/legobegutulo/marco_fireplace_blower.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/b._com_degree_certificate_form.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/96446024800.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e454e25c-a87b-4ced-83b8-c8eea8e926d4/hp_officejet_6500a_printhead_alignment_failed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0eec03ed-0a9b-42ff-8b0b-42146cbd1303/how_much_does_family_feud_pay.pdfIn PDF document text
    • https://s3.amazonaws.com/nojemi/genie_pro_screw_drive_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49c888cb-5f68-4dba-96a9-2b4883ddc9ad/71046838520.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/google_sheets_organizational_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/odisha_govt_job_information.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4fb5295-93e6-42f5-a0de-8983bf845783/grammar_files_blue_edition_teachers_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c197099-3b4a-4ae1-880d-0128ba379e0d/how_did_railroads_impact_the_west.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52f62790-c536-472a-8914-4edc144aad0f/denon_avr_3313_release_date.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f7b5b3e-5e12-4f4c-b915-78fc075a14db/java_tutorial_for_beginners_free_code_camp.pdfIn PDF document text
    • https://s3.amazonaws.com/lemerisinivum/mukuwulukewagiboxitu.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/playing_cards_game_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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED4F 5308 bytes
SHA-256: 0bbcdcc48266804253eba81ad4c71e251c94be7bfc8e0d4a03c7cfdfed3bb2a7
font_01_sfnt_off0000ff41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF41 2108 bytes
SHA-256: 69389ef689f8c86eac0e000972d65951e510e04873d32f756dcde3f6d35d2ff0
font_02_sfnt_off000108eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108EB 12080 bytes
SHA-256: b9c1d71d2c59f26e4895009535328e9ecda2445b9a0d451dfecbe759e9def510
font_03_sfnt_off00013093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13093 16036 bytes
SHA-256: 52db30b66cfb76898988bc7c6ed152514c301740808ab95bec9c68e49df23550
font_04_sfnt_off000144fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144FB 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361