Malicious PDF — malware analysis report

Static analysis result for SHA-256 e97e69121b204bba…

MALICIOUS

PDF

89.4 KB Created: 2021-03-28 23:46:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 44fc0f198d1b0ed0efcca3e2a1dbd8a2 SHA-1: 41b80db0b58f25f3f0d20a7e01dd4e7233e53f57 SHA-256: e97e69121b204bba36e7b65a02487435d804585e650023c8c2d5779c520b3983
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs, many pointing to disposable hosting, and is flagged by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to product information, likely intended to redirect users to malicious sites for phishing or malware delivery. The presence of multiple external links indicates an attempt to establish a link farm for traffic redirection or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://resalured.ru/strik?utm_term=chicco+keyfit+30+weight+of+carrier PDF link annotation
    • http://xariketixagat.mypressonline.com/polaris_trailblazer_250_carburetor_adjustment.pdfIn PDF document text
    • http://copyrighytsupport.com/how_to_rebuild_2_stroke_outboard_carburetorvjxm2.pdfIn PDF document text
    • http://woodlesenka.ru/dyson_dc59_spares_ukl11ud.pdfIn PDF document text
    • http://miromawetibikew.mywebcommunity.org/2002_polaris_sportsman_400_top_speed.pdfIn PDF document text
    • http://vosalax.22web.org/hahaha_challenge_musically_song.pdfIn PDF document text
    • http://sevowina.medianewsonline.com/how_to_build_ingenuity_convertme_swing-2-seat.pdfIn PDF document text
    • http://raguvigawak.mypressonline.com/flat_stomach_exercises.pdfIn PDF document text
    • http://fekevopimibun.sportsontheweb.net/31933393166.pdfIn PDF document text
    • http://vitofemegawe.getenjoyment.net/ribowupojerazederugesu.pdfIn PDF document text
    • http://fb-ig-copyright.com/xirekiwununupesapezipesajcr0pt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xigofopaxedu.rf.gd/lusudunisosisugo.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/busqueda_de_informacion_definicion.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/letter_b_worksheets_cut_and_paste.pdfIn PDF document text
    • http://tamazodatitemi.epizy.com/the_distinguished_gentleman_movie_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af738c89-5bb3-4de5-8a1c-e4e9694e4cb2/9559952636.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d40d0de-f06a-4754-9d3c-ce0cb701791b/vuxexiteso.pdfIn PDF document text
    • http://bijiwamosijiw.epizy.com/kawewufodasozosonidup.pdfIn PDF document text
    • http://gafodix.myartsonline.com/31495821162.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bcf7cf7-2e04-4758-b277-1c1124807ae9/windows_10_pro_cursor_disappeared.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/66592807739.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/xegezomogud.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B51 5404 bytes
SHA-256: 36643aaf32fb51278a003e324492e9bf32cc116ef105c0eadf2ab44c771078a3
font_01_sfnt_off00011dcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DCF 10648 bytes
SHA-256: ced9283d1d5e5e253e95216ffd026cc85ff42f949b33d414801edd3f274cde0d
font_02_sfnt_off00014272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14272 16312 bytes
SHA-256: 975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15

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