Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffd08964d867b00e…

MALICIOUS

PDF

75.7 KB Created: 2021-02-27 05:40:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 942d3ff64c2fc9a6f5660339ec7a5129 SHA-1: d5ac58993d5ab57b2198c9d2ed5102067fe46432 SHA-256: ffd08964d867b00eae55674a15a52c40938191818ccb770bd9f860742e4e2ac9
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 0.9998

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://seumenha.ru/strik?utm_term=can+praying+cure+depression PDF link annotation
    • https://cdn.sqhk.co/janonaset/CjigiDI/bidavitula.pdfIn PDF document text
    • http://jawixogu.mygamesonline.org/motejixupuxixodila.pdfIn PDF document text
    • http://erogan-columbia.site/aidin_salih_gerek_tp_yitik_ifann_izinde_indirczwhh.pdfIn PDF document text
    • http://deemonatrafik.xyz/rudulepulexukanhxf5.pdfIn PDF document text
    • http://nout-sale.site/bucket_list_with_friends3eiw7.pdfIn PDF document text
    • http://love-cosmetics.shop/aroma_20_cup_digital_multicooker__rice_cooker_manualkcx16.pdfIn PDF document text
    • http://dogalijun.scienceontheweb.net/which_philips_wake_up_light.pdfIn PDF document text
    • https://cdn.sqhk.co/salobosemiv/etanZhb/68964856200.pdfIn PDF document text
    • http://tersq.space/mipesij4xld.pdfIn PDF document text
    • http://giwosoto.sportsontheweb.net/fudeteta.pdfIn PDF document text
    • http://static-get.top/car_raffles_in_californiaoaz43.pdfIn PDF document text
    • http://borejukeluteva.mygamesonline.org/shoei_neotec_ii_splicer_tc-6_l.pdfIn PDF document text
    • http://viniveba.mywebcommunity.org/international_criminal_law_jobs_london.pdfIn PDF document text
    • http://lizoguxumugef.mywebcommunity.org/wd_my_cloud_home_not_syncing.pdfIn PDF document text
    • http://midarujiwuvi.mygamesonline.org/71799152724.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zijiwaras.onlinewebshop.net/what_time_of_year_do_psilocybe_cyanescens_grow.pdfIn PDF document text
    • http://wugujub.onlinewebshop.net/15856441667.pdfIn PDF document text
    • http://nopugorib.onlinewebshop.net/what_are_human_factors_in_healthcare.pdfIn PDF document text
    • http://bogalibamadom.myartsonline.com/what_is_the_impact_of_globalisation_on_indian_economy.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_off0000eb91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB91 5216 bytes
SHA-256: f4125e388fbce22b903a3a9bb0a143cf4ebb1c5f609133aeffb4b7c039fb1582
font_01_sfnt_off0000fd62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD62 10960 bytes
SHA-256: d189006bcb3e42245a4a7a56157c97721d1d9135e5cfdfd18bf9c11c8b5a4a6a

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