Malicious PDF — malware analysis report

Static analysis result for SHA-256 20fd4b430aace7db…

MALICIOUS

PDF

79.0 KB Created: 2021-03-21 11:12:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: b14dd2943e46539bb74b09bca0f492ec SHA-1: 67e0ff06f06507df63a08708f6da7ddaf63e117a SHA-256: 20fd4b430aace7dba8408bbc179566e987fcbffaafb91554fb9bdf7439a080c8
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'xezojetit.ru', which is presented as a search result for a Netgear manual. This suggests a phishing or malware delivery attempt, likely using the document as a lure to direct users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://xezojetit.ru/wix?keyword=netgear+wn2000rpt+manual+espa%25C3%25B1ol PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4475859/normal_6052320834f03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372696/normal_60513e137a9e1.pdfIn PDF document text
    • http://consequences.space/garmin_oregon_450_spare_parts17e08.pdfIn PDF document text
    • http://uspex22.online/31554009303o496f.pdfIn PDF document text
    • https://cdn.sqhk.co/jupozaregu/jhIibic/86162480902.pdfIn PDF document text
    • https://cdn.sqhk.co/gixobujikelu/bjhhdhe/36275837895.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383451/normal_601661728fa50.pdfIn PDF document text
    • https://cdn.sqhk.co/dexijonur/rjdij13/xobudukugelelolinavetewi.pdfIn PDF document text
    • https://cdn.sqhk.co/wuxonukifi/ThjjeJr/headhunters_io_mod_apk.pdfIn PDF document text
    • http://shopwithsale.website/92627714766ro199.pdfIn PDF document text
    • http://zurujavurobe.scienceontheweb.net/human_resource_management_terminology.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379486/normal_5fcbfa86499ed.pdfIn PDF document text
    • http://sallehq.xyz/toastmasters_advanced_communication_series_manuals2obr8.pdfIn PDF document text
    • http://mabay.fun/branches_of_chemistry_worksheeth2rhh.pdfIn PDF document text
    • http://bizifemodefi.mygamesonline.org/principio_de_conservacin_de_la_carga_elctrica.pdfIn PDF document text
    • http://kinorio5.xyz/zevezubiweramieyica.pdfIn PDF document text
    • http://rugegav.mywebcommunity.org/77161399465.pdfIn PDF document text
    • http://sayfelengs.space/brother_mfc-7360n_network_user_guide4s9k4.pdfIn PDF document text
    • http://agent-ritual495.online/72981188937c6fxo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411916/normal_5fcb4df524a0d.pdfIn PDF document text
    • http://wrinklestiltskin.com/business_dictionary_book13gcy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lunobuxuwore.rf.gd/11822760207.pdfIn PDF document text
    • http://lunodemexixape.epizy.com/44413531362.pdfIn PDF document text
    • http://rujidafedisezu.atwebpages.com/how_much_do_clinical_psychologists_with_a_doctorate_make.pdfIn PDF document text
    • http://minivenema.atwebpages.com/blood_relation_questions_for_banking.pdfIn PDF document text
    • http://rutukoka.epizy.com/57974708256.pdfIn PDF document text
    • http://dadorisisewane.epizy.com/81952949953.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_off0000f303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF303 5684 bytes
SHA-256: 5c5293220465aaa69aa493cc29df7239a1dc2e549fdafac4fcd963a529b66a85
font_01_sfnt_off0001061b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1061B 11808 bytes
SHA-256: 5617f22039a4b5d5a16895dd3d435a5664436cc1c12e2fd81ac0acda8eee4ac4

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