Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0cde4fec1e0ae65…

MALICIOUS

PDF

110.9 KB Created: 2021-03-24 00:32:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: d00d201139e0b478663b36818e349618 SHA-1: 8aa4ede40c4792f9ddea745400461f2a5b2fc1b7 SHA-256: d0cde4fec1e0ae65eab4df2a74fcf6147d445593ed1ab786c21cc612bae9bcd5
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 0.9977

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://dugedepap.ru/strik?utm_term=libro+el+secreto+de+selena+online PDF link annotation
    • http://xelibirujegid.mywebcommunity.org/marley_and_me_movie_stream.pdfIn PDF document text
    • https://cdn.sqhk.co/bebomopakax/Vjimajf/lucky_block_bedwars_map_mcpe.pdfIn PDF document text
    • https://cdn.sqhk.co/xamevetap/WUhcjj1/languageguide._org_spanish_grammar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417413/normal_6029ee853ee38.pdfIn PDF document text
    • http://tobolekes.iblogger.org/14085695228.pdfIn PDF document text
    • http://zuxemesemubozo.mywebcommunity.org/neoliberal_capitalism.pdfIn PDF document text
    • https://cdn.sqhk.co/xezalagefog/AbjjTh5/93160579583.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393916/normal_5fed0ca11a6fd.pdfIn PDF document text
    • http://jikusofare.mywebcommunity.org/arquitectura_empresarial_libros.pdfIn PDF document text
    • https://cdn.sqhk.co/gegatuzikat/5iexkD6/bandi_saroj_kumar_wife.pdfIn PDF document text
    • http://palaxofivuleduj.medianewsonline.com/jidotoda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419827/normal_6021a5a47d984.pdfIn PDF document text
    • https://cdn.sqhk.co/fejisedetu/3YvuoJI/dash_questionnaire_police.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454425/normal_605a6a3f01f10.pdfIn PDF document text
    • http://jedilinosur.mywebcommunity.org/fikavevumoxexor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403952/normal_600ba97156603.pdfIn PDF document text
    • http://wijasagasipode.getenjoyment.net/tropical_rainforest_vegetation.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rebikesumusosu.rf.gd/outlander_series_book_9_release_date.pdfIn PDF document text
    • http://pakapenabu.atwebpages.com/how_do_you_factory_reset_kindle_fire_when_it_wont_turn_on.pdfIn PDF document text
    • http://xetatiwu.rf.gd/apc_back-_ups_350_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bd3e1d7-9f39-4839-bec4-8d97b8855f40/gepuzunes.pdfIn PDF document text
    • http://levapoloj.onlinewebshop.net/sarenasolabukibosaloze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73ded415-b23e-4c35-94cb-40ab26195c0a/bobozegur.pdfIn PDF document text
    • http://duvodix.myartsonline.com/dowuderewedatexifururalop.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000152a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152A2 5012 bytes
SHA-256: 9e89d4fb6d6a12f6ad83d37fced33be2d4a92576e8b34cc4fd7ed9d621a7719a
font_01_sfnt_off000163ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x163AD 2432 bytes
SHA-256: 860c680bf2c2936b7c0f88b48ad8911a58e3aa085eede54c833a6fa510b30d56
font_02_sfnt_off00016d3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16D3F 12768 bytes
SHA-256: d54836c746f4fd698180ac5ca9d16fd5665feee6bea28d0a368b183e3fe64fd3
font_03_sfnt_off00019696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19696 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15