Malicious PDF — malware analysis report

Static analysis result for SHA-256 d00ed1591f3b29fb…

MALICIOUS

PDF

71.6 KB Created: 2021-03-17 03:40:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 2743d4181494dce2938b7760266dced7 SHA-1: c07f39fa1d184c672de31ee87ebcfd37a8df7ec3 SHA-256: d00ed1591f3b29fbbcfd85462eefd22bbaecf292534909b3e1a25ee706b0fbf2
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. It contains numerous embedded URLs, with at least one, 'https://xajibur.ru/wix?keyword=what+words+that+start+with+nag', identified as a potential lure. The document body appears to be malformed or obfuscated, but the presence of many links suggests a link farm or phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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/wix?keyword=what+words+that+start+with+nag PDF link annotation
    • http://homebig.space/panevuwewagiwozetuveme4uybt.pdfIn PDF document text
    • http://duwosolutanuz.mypressonline.com/23654853982.pdfIn PDF document text
    • http://khanapoorti.com/vulijemudabidifixi1twm.pdfIn PDF document text
    • http://technodom11.com/drive_in_movie_theater_los_angeles_tenetfvpq6.pdfIn PDF document text
    • http://3gusevshop.website/841586983173my1p.pdfIn PDF document text
    • http://koolmaxt.online/2013_toyota_camry_maintenance_required_light_flashes_8_timesp9crz.pdfIn PDF document text
    • http://salonapp.xyz/18619798619r7v2t.pdfIn PDF document text
    • http://eurofamily.pro/lokorezatujeloxasexaboynlcy.pdfIn PDF document text
    • http://garant-ritual.online/eyelash_extension_certification_course_near_mepwzqv.pdfIn PDF document text
    • http://zotikarida.medianewsonline.com/ratajotenojol.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
    • http://puribobelumisi.rf.gd/letra_del_himno_nacional_mexicano_en_espaol_y_nahuatl.pdfIn PDF document text
    • http://woranuganavot.myartsonline.com/rejisuvetiwepopakizavipun.pdfIn PDF document text
    • https://96ea5dd8-6962-4d57-b29c-fb233a715e3b.filesusr.com/ugd/ac3463_d9ffcd0bd41d420695bca08535a67082.pdf?index=trueIn PDF document text
    • http://gudugapapilile.atwebpages.com/81761477966.pdfIn PDF document text
    • https://03a45e23-20c9-4b13-8d21-50c2609e56df.filesusr.com/ugd/502f3d_83f97d252abf4ece90719fb02ff52490.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a83a230d-fe21-44a6-8098-7bee0738008f/garosalaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4605d45-c71d-4716-b938-c0f94358ee8c/free_printable_maths_worksheets_for_8_year_olds_uk.pdfIn PDF document text
    • http://zodiripek.myartsonline.com/11286195881.pdfIn PDF document text
    • http://nasukenapab.epizy.com/mbox_2_pro_drivers_mac_os_x.pdfIn PDF document text
    • https://1d812fcc-cfc3-4558-a870-56fc5b7f4c2e.filesusr.com/ugd/754d94_c3e0c8c19517492cbf84a0c3f636b293.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE7C 4832 bytes
SHA-256: 35be9b7bb7bdf46a804d5e03005f6eb2af4db9a49c5eeab154e35e4a389aa2aa
font_01_sfnt_off0000deeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEEB 10664 bytes
SHA-256: 7cd972f1d17abdfb1a031cb3c5a5fb247ac94192240d3b91de9ddabeef4817d8
font_02_sfnt_off0001032d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1032D 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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