Malicious PDF — malware analysis report

Static analysis result for SHA-256 eae7eaeaa54bba32…

MALICIOUS

PDF

145.5 KB Created: 2021-03-18 02:46:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c15160f4dd188d83270403aba963d4bd SHA-1: bd842729673a9df64c9887ad602bf85f6ec5e159 SHA-256: eae7eaeaa54bba32b531fdfde73c3065cc3180c752b5c597b955f76fd07fc74f
156 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 as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external links, with one specifically pointing to a URL that appears to be part of a link farm designed to distribute other malicious PDFs. While no scripts were directly extracted, the PDF structure and heuristic firings suggest it's designed to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://seumenha.ru/award?keyword=catalog+panasonic+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4483842/normal_602f4b592c833.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/QcfjhIG/lighthouse_insurance_claims.pdfIn PDF document text
    • https://cdn.sqhk.co/sifapudoxig/jejhFfS/84636712992.pdfIn PDF document text
    • https://cdn.sqhk.co/fumazuri/jbVo6hf/14738432995.pdfIn PDF document text
    • https://cdn.sqhk.co/bamebuxi/bhV3uiN/cyberpunk_2077_camera_mode.pdfIn PDF document text
    • https://cdn.sqhk.co/datisafapuv/gifh4Bq/73353290232.pdfIn PDF document text
    • https://cdn.sqhk.co/vobevufubito/TlcliiI/92822159604.pdfIn PDF document text
    • https://cdn.sqhk.co/nazutupim/icI9jaN/grand_hotel_mania_how_many_levels.pdfIn PDF document text
    • https://cdn.sqhk.co/rorezina/iDpAhdZ/zulosurupebu.pdfIn PDF document text
    • https://cdn.sqhk.co/kidurukazag/arEEtxY/short_hairstyles_2019_black_female_over_60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420775/normal_603d210ad1447.pdfIn PDF document text
    • https://cdn.sqhk.co/sozaxejiv/gdO7gig/zumasora.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415534/normal_5fd77b39b6f7d.pdfIn PDF document text
    • https://cdn.sqhk.co/konidadelan/npgetgj/subway_restaurants_catering_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/wopeporamo/ihEhfjf/sky_jumper_parkour_mania_free_running_game_3ds.pdfIn PDF document text
    • https://cdn.sqhk.co/norowitidot/egheIhi/80010826973.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/zozofufulolig/96250611127.pdfIn PDF document text
    • https://s3.amazonaws.com/falejogajir/kovixonopesaterutofojuxul.pdfIn PDF document text
    • https://c8f0d892-4c73-447a-841b-b6a48a565a7d.filesusr.com/ugd/928a57_0b03c6ea54374efabdb1011e3c0766bf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/safago/tavisawudomefatode.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/convert_excel_spreadsheet_to_tab_delimited_file.pdfIn PDF document text
    • https://cf4de027-7369-46c2-bf93-d69cabef2b5e.filesusr.com/ugd/868b90_76bcb012b93e4e659102227b3edc1862.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE1F 90736 bytes
SHA-256: 89bbd43b6259dc2645de443ef4163fe5ec1951a443591c0890b4bae2e2310ce7
font_01_sfnt_off0001ee26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EE26 5132 bytes
SHA-256: 860e8afa060abbf7b652979619a281dcaad77e4db1a78e669023a62faae2960f
font_02_sfnt_off0001ffb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FFB5 10436 bytes
SHA-256: fe6efdb57b74943b3a28dafe3a9d9c2483dd5e783835327620e6d56ca610c748
font_03_sfnt_off00022395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22395 16076 bytes
SHA-256: 8cf3fb89ff5359e2db2b4357ef3bdb9a23528f67d1395acde2bb1fe78cf5522a

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