Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ec4655a69875147…

MALICIOUS

PDF

75.8 KB Created: 2021-05-08 21:52:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 51b5a287d7a94e4ec023e1b196574e60 SHA-1: 56c2339009c42debf10cd8397177d6ff6308b5d0 SHA-256: 2ec4655a698751478a966b55eb77c123a88698956bc8dc2ad96b7dc18be4c3a3
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://seumenha.ru/strik?utm_term=digital+design+5th+edition+mano PDF link annotation
    • http://suporefebakibur.mygamesonline.org/dinike.pdfIn PDF document text
    • http://tuvurebomiworo.scienceontheweb.net/abramelin_book_3.pdfIn PDF document text
    • http://graatorama.space/azoturia_in_horsesjgr8d.pdfIn PDF document text
    • http://xufamorazogubov.sportsontheweb.net/dusizifaguramezovisotonon.pdfIn PDF document text
    • http://vuzetasavuxoso.mygamesonline.org/appdynamics_monitoring_tool_tutorial.pdfIn PDF document text
    • https://cdn.sqhk.co/fipimomozuk/eicoZgd/degisovijekisirukogiget.pdfIn PDF document text
    • http://indital.space/gusasaximetalaxafawp0mes.pdfIn PDF document text
    • http://godotobekof.scienceontheweb.net/lubepifexeleke.pdfIn PDF document text
    • http://ledy66.net/81440655617193by.pdfIn PDF document text
    • https://cdn.sqhk.co/konajera/476hhih/big_rig_s_bbq_yelp.pdfIn PDF document text
    • http://specrazreshenie.com/888261497772503q.pdfIn PDF document text
    • https://cdn.sqhk.co/mivadunoxo/7jaidic/memoir_44_winter_wars_scenarios.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/fibesezati/lotuzazebenazofavisomu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bf8d280-8236-4322-b795-3128aa1ed1eb/vekazu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc63d0f5-930c-443e-9a61-4d0c8429869e/ff7_remake_tips_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffa45654-01cf-4526-b0e4-4e55ff923e82/40535621965.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03a91764-c1aa-43df-8426-b12643dde8dc/virenatesumex.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/balancing_equations_practice_problems_worksheet_answers.pdfIn PDF document text
    • http://nuvotadaxiti.epizy.com/39500335924.pdfIn PDF document text
    • http://mupopab.rf.gd/dumidelowinu.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/does_samsung_uhd_tv_6_series_nu6950_have_bluetooth.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e87435f-865c-48b8-b15c-6398e1878504/kimosimoni.pdfIn PDF document text
    • http://bonizeza.epizy.com/dictionary_free_app.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_off0000e7b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B5 5268 bytes
SHA-256: 3861684f1b8cf7c7072b397cb1356b4ba9a3364cf0ad722534b76ab26c25c759
font_01_sfnt_off0000f981.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF981 11920 bytes
SHA-256: 400e6603b2fd27aa7f4452b2c339175eeeb2bcda54f1afddd417d16cab9438fc

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