Malicious PDF — malware analysis report

Static analysis result for SHA-256 068ead4c9f2ca7ad…

MALICIOUS

PDF

83.2 KB Created: 2021-05-02 08:48:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: af279b9b65509a3be8a35b7a65da5c63 SHA-1: 1082bcd3e259a00f2e3b2be3fa4d20fec11bc837 SHA-256: 068ead4c9f2ca7adf28f85e953c5162f6473857725e80d8e3eb76e584a0fda50
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9993

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://jottigo.ru/strik?utm_term=how+much+does+a+physics+engineer+make+a+year PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381104/normal_6054ac2c6646c.pdfIn PDF document text
    • http://wiramegat.22web.org/average_salary_for_marketing_project_manager.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424330/normal_604f8c103d4a8.pdfIn PDF document text
    • https://cdn.sqhk.co/fagesupuwe/jdigig4/challan_281_in_excel_format_free.pdfIn PDF document text
    • https://cdn.sqhk.co/vakenuda/jgQdhiT/the_walking_dead_season_one_episode_2_walkthrough.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454438/normal_60580f52e3da9.pdfIn PDF document text
    • http://tujukesabegakom.mygamesonline.org/fapapumatijiketenig.pdfIn PDF document text
    • https://cdn.sqhk.co/nosimasiv/ciixQha/keep_away_mosquitoes.pdfIn PDF document text
    • http://xovebud.mygamesonline.org/neet_biology_books_in_gujarati.pdfIn PDF document text
    • http://miromawetibikew.mywebcommunity.org/java_8_stream_api_filter_map.pdfIn PDF document text
    • http://xebupado.mypressonline.com/discounted_cash_flow_valuation_example.pdfIn PDF document text
    • http://pazadixokumox.sportsontheweb.net/amitriptilina_bula_anvisa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489587/normal_5fdf8c2646677.pdfIn PDF document text
    • https://cdn.sqhk.co/molewekane/iqJichj/77826087313.pdfIn PDF document text
    • http://kurepez.22web.org/what_is_newtons_2nd_law_examples.pdfIn PDF document text
    • http://worameruvejaka.mywebcommunity.org/90372721674.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kivarutumo.myartsonline.com/atlas_de_bacteriologia.pdfIn PDF document text
    • http://pekamidakoj.atwebpages.com/carmen_bizet_habanera.pdfIn PDF document text
    • http://feferabi.atwebpages.com/engel_termodinamica_download.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/who_performed_cats_in_the_cradle.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/all_rounder_naa_songs_free.pdfIn PDF document text
    • http://sebokegekesuded.atwebpages.com/33073969988.pdfIn PDF document text
    • http://keluwuvofaj.epizy.com/formal_resignation_letter_sample_short_notice.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/toyota_corolla_hatchback_manual_for_sale.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10453 5676 bytes
SHA-256: 9dc9f1df9d40abdf71723ed2a46d4dbede13d18840bec8c436130fe1be71661c
font_01_sfnt_off00011789.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11789 11648 bytes
SHA-256: 66da616cf6d55b6328f36f07af1908b450a9acf7ee85508eb20fee38b0013dd2

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