Malicious PDF — malware analysis report

Static analysis result for SHA-256 561ddd8ac787a8f9…

MALICIOUS

PDF

76.9 KB Created: 2021-05-08 04:49:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 588b29f162006870eb27ffff29d11623 SHA-1: 72fbac30548d17526cc96ca6f1b4cbc98ea7e518 SHA-256: 561ddd8ac787a8f9782e5da086a1f5a5cea01ce884aef92e9e1abc5ad2bda149
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 0.9960

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://soxebez.ru/strik?utm_term=does+my+ge+profile+dishwasher+have+a+filter PDF link annotation
    • http://xivazokib.medianewsonline.com/which_fitbit_model_is_best_for_me.pdfIn PDF document text
    • http://giwapozolaleg.mypressonline.com/traducir_textos_del_espaol_al_ingles_gratis.pdfIn PDF document text
    • http://zibepifutidi.sportsontheweb.net/20342439971.pdfIn PDF document text
    • http://liwexun.mywebcommunity.org/biology_textbook_class_12.pdfIn PDF document text
    • http://jofufunobek.sportsontheweb.net/demim.pdfIn PDF document text
    • http://dabopoxele.getenjoyment.net/cancionero_para_guitarra_acustica.pdfIn PDF document text
    • http://xasusofeg.iblogger.org/vizedogidekekijujo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8bd0dbf5-62e0-4684-a95a-1d9666dfa34a.filesusr.com/ugd/e71694_ee24f9d068dc4ca98a06aaf41d466f32.pdf?index=trueIn PDF document text
    • https://4465b75e-e642-4f53-8c89-e22f0b9d4994.filesusr.com/ugd/ecd213_a3880cff7c1f4d02aa508f975d6d6a67.pdf?index=trueIn PDF document text
    • http://jabodegodonirad.atwebpages.com/pharmacological_classification_of_antihypertensive_drugs.pdfIn PDF document text
    • http://wuzakinalafivu.rf.gd/bollinger_band_strategy.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/economic_facts_and_fallacies_second_edition.pdfIn PDF document text
    • http://towawopijoxodor.rf.gd/daxavusejajupixolomewa.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/blacktop_mojo_in_the_air_tonight.pdfIn PDF document text
    • https://68a74d12-89ac-4a94-b826-09ad332a30bf.filesusr.com/ugd/1a0392_59d1785904cb42d89c38dfc156daa9d0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vipinib/fukirelanadivifa.pdfIn PDF document text
    • http://lunumirovunere.epizy.com/67674710245.pdfIn PDF document text
    • http://misezameliza.rf.gd/21657204203.pdfIn PDF document text
    • http://remobufu.rf.gd/music_basics_word_search_answer_key.pdfIn PDF document text
    • http://sumidemeg.epizy.com/29250477402.pdfIn PDF document text
    • http://likewiwojuxus.atwebpages.com/area_of_2d_shapes_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/20409691957.pdfIn PDF document text
    • http://fudedeki.rf.gd/accounting_glossary_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/75727848883.pdfIn PDF document text
    • http://vipaviveza.epizy.com/equifax_credit_report_and_score.pdfIn PDF document text
    • http://pejagezuwuki.epizy.com/65969184247.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_off0000eaec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAEC 5708 bytes
SHA-256: 5f374be2ec92dd07289212177a4ddee7dfbfd6320fee8256f00abf085458a883
font_01_sfnt_off0000fe51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE51 11204 bytes
SHA-256: 72bc8bcb489dfdb0add8f7fec3b2dd5bbe71301d4ba4d3221918326da28ef873

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