Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2ea7bde45c7412d…

MALICIOUS

PDF

79.5 KB Created: 2021-04-06 00:09:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f88894a2bf2a676c83b612a6935c9e0f SHA-1: 9db43df0ced84ede0576e37e8f7d8399d0386802 SHA-256: c2ea7bde45c7412db94f5a3d1488b8853623e7f27e24fcce41dfedf227e7dba7
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 0.9997

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://jacksth.ru/strik?utm_term=cost+of+smart+board+for+classroom PDF link annotation
    • http://nukels.xyz/60826883957jw9v6.pdfIn PDF document text
    • http://procripton.com/34518091551ig4l9.pdfIn PDF document text
    • http://kemedejovon.getenjoyment.net/21829803131.pdfIn PDF document text
    • http://kepuxom.mypressonline.com/fexujikubuguwuwexolarexu.pdfIn PDF document text
    • https://cdn.sqhk.co/tazifawixax/ZiyIngh/smash_bandits_racing_mod_apk_data_unlimited_money.pdfIn PDF document text
    • http://bewewafip.scienceontheweb.net/lista_de_adjetivos_con_ed_y_ing.pdfIn PDF document text
    • http://logvoz.ru/226085723859ugsv.pdfIn PDF document text
    • http://jibifiva.22web.org/masterbuilt_mps_20b_patio-2-portable_propane_smoker_reviews.pdfIn PDF document text
    • http://jovefupe.mywebcommunity.org/amplified_holy_bible.pdfIn PDF document text
    • http://medgaj.com/i_cant_make_this_up_kevin_hart_amazon7ddtm.pdfIn PDF document text
    • https://cdn.sqhk.co/nokulebepoba/ryql1gg/florence_nightingale_facts_worksheet.pdfIn PDF document text
    • http://cenderaoriginator.com/how_to_reset_filter_notification_on_samsung_refrigeratoryjoqo.pdfIn PDF document text
    • https://cdn.sqhk.co/sesexibanobu/d9MHb8O/51752691286.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/009aa189-b151-4f5a-b1f4-bfe6ee8f0a68/zuzinop.pdfIn PDF document text
    • http://nodikisiti.rf.gd/as_400_system_administration.pdfIn PDF document text
    • http://kuxoxokazutuv.myartsonline.com/toshiba_satellite_l755_drivers_free_download.pdfIn PDF document text
    • http://diwedixeku.rf.gd/81072332982.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9533bace-c438-405a-abe8-c9de032681ec/4571228361.pdfIn PDF document text
    • http://tosasip.epizy.com/bibliology_books.pdfIn PDF document text
    • http://buwomonemagup.epizy.com/cv_template_for_job_word.pdfIn PDF document text
    • http://feloxokarapuj.rf.gd/93360967398.pdfIn PDF document text
    • http://gexazovaf.epizy.com/fisher_price_jumperoo_height_adjustment.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_off0000f870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF870 5212 bytes
SHA-256: 566e5106ebaa39ade53089bf5e7cd5f2b9290c10b67ad6ebfba44ce33bc4af42
font_01_sfnt_off00010a0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A0B 10916 bytes
SHA-256: 16be4e3965794bcaee68e134b8232677cfc7eeaeef5e9cc6b944c8df5580494e

Open this report in the interactive analyzer, or submit your own file for analysis.