Malicious PDF — malware analysis report

Static analysis result for SHA-256 3085885fc9151be4…

MALICIOUS

PDF

74.5 KB Created: 2021-03-18 21:04:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 5862e7fa6101340a9fd122bf05aa8246 SHA-1: 3cb3b0962d700206204a28670693fcc11a2324c8 SHA-256: 3085885fc9151be4f290c06a32e361060bd2c6367022073959b8dc6e1c7d0298
126 Risk Score

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 0.9997

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://baarspo.ru/award?keyword=handbook+of+industrial+water+soluble+polymers+pdf PDF link annotation
    • http://tujidal.mypressonline.com/us_history_workbook.pdfIn PDF document text
    • http://xotizel.iblogger.org/jquery_accordion_examples_free.pdfIn PDF document text
    • http://nufapivevavenak.22web.org/59354570380.pdfIn PDF document text
    • http://moradudipomibo.mypressonline.com/game_of_thrones_show_bible.pdfIn PDF document text
    • http://netekepipavosis.sportsontheweb.net/enders_shadow_bean_character_analysis.pdfIn PDF document text
    • http://matizaw.mywebcommunity.org/tactical_planning.pdfIn PDF document text
    • http://jixusigelabewe.iblogger.org/45316244603.pdfIn PDF document text
    • http://zinefikitozozeg.sportsontheweb.net/momebogitukiranuxadad.pdfIn PDF document text
    • http://sadinexiwa.mygamesonline.org/adultery_judgement_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://37976aa0-f55f-47d3-847a-8d185b13ebf6.filesusr.com/ugd/1d6212_2b51c2ed77944383933f09390418e700.pdf?index=trueIn PDF document text
    • https://584dc5e1-4449-4bca-b3d9-d0e1fa08a972.filesusr.com/ugd/185caa_094ce9d8d22f4ce5ba600120d8ef8690.pdf?index=trueIn PDF document text
    • http://wujagenak.atwebpages.com/adobe_reader_update_for_windows_7.pdfIn PDF document text
    • http://jofarasaxorepow.rf.gd/creation_of_internet.pdfIn PDF document text
    • http://radiviwix.onlinewebshop.net/jeviwot.pdfIn PDF document text
    • http://xawuxona.epizy.com/ikea_king_size_platform_beds.pdfIn PDF document text
    • http://vowiguwoku.rf.gd/tabe_level_a_practice_test.pdfIn PDF document text
    • https://2a1457bb-a4d2-449b-8914-d784a503a6da.filesusr.com/ugd/c0fca2_00f7d46c943a442ab949fd766586350d.pdf?index=trueIn PDF document text
    • http://rigatage.epizy.com/principio_de_funcionamiento_de_un_motor_de_corriente_continua.pdfIn PDF document text
    • http://besinaxot.epizy.com/79568491168.pdfIn PDF document text
    • https://77047a80-9f17-4504-a563-a097c25ca12e.filesusr.com/ugd/5c8b2f_baa6a2aef6d74b74b9db1d2e0a94d6cf.pdf?index=trueIn PDF document text
    • https://a97be2a3-bfb5-42de-bba9-b145341b31aa.filesusr.com/ugd/1f2860_b7f0bda4adb846bd8ed8ec8d30aa5c0c.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

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_off0000e5db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DB 5548 bytes
SHA-256: 163adb649c607d95d22236a6d53fd85b35eb3c171e3368ced5b09be254cae27c
font_01_sfnt_off0000f8b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B1 10520 bytes
SHA-256: 1786cc4459abdd8957bfb03605a1af22a92b54e9ce20356d1c299a2a04118d16

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