Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dc7096a04b6d4b2…

MALICIOUS

PDF

75.2 KB Created: 2021-03-24 06:14:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: c87830c45d52e61b7d006f64c1ce0f74 SHA-1: 2315658594d673157ff5ec2066c0b181dfc9a92c SHA-256: 6dc7096a04b6d4b20e8037249bf545264ae32067c437a73f4f9e809946c83529
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one identified as a potential phishing or malware distribution point. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high volume of links on disposable hosting, suggesting an attempt to obscure malicious destinations. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

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=fly+tying+table+lamp PDF link annotation
    • https://cdn.sqhk.co/gabazumad/Iizb9jd/pofoxorizatakapiriput.pdfIn PDF document text
    • http://dapurixid.sportsontheweb.net/4dx_book.pdfIn PDF document text
    • http://ruxuzosok.mywebcommunity.org/lodomal.pdfIn PDF document text
    • https://cdn.sqhk.co/zoribakim/3hdYggD/cbse_result_2018_class_10_marksheet.pdfIn PDF document text
    • https://cdn.sqhk.co/butemobe/phigfgg/arrow_warehouse_locations.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwifoviwalo/Uiaoj2J/download_flick_shoot_2_pro.pdfIn PDF document text
    • http://zowuzigokov.22web.org/81402091354.pdfIn PDF document text
    • http://nasufulorejuwe.mywebcommunity.org/nuweket.pdfIn PDF document text
    • http://somemif.iblogger.org/family_tree_template_word_editable.pdfIn PDF document text
    • https://subarijarasojud.weebly.com/uploads/1/3/4/3/134332778/rugujenu-vavuvali-sisevapetigu.pdfIn PDF document text
    • https://bojibelatos.weebly.com/uploads/1/3/4/0/134040608/7671596.pdfIn PDF document text
    • https://dirifulezidume.weebly.com/uploads/1/3/2/7/132740871/kivozet-pizerefip-kakedufix.pdfIn PDF document text
    • https://neminijovasagig.weebly.com/uploads/1/3/4/6/134603544/pajiv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bipanotobewosa.epizy.com/el_cine_documental.pdfIn PDF document text
    • http://jixepazesobuno.rf.gd/how_do_you_start_a_dewalt_3000_psi_pressure_washer.pdfIn PDF document text
    • http://pidodexogejax.myartsonline.com/importance_and_benefits_of_energy_conservation.pdfIn PDF document text
    • http://webezivoxubabo.epizy.com/multiple_meaning_words_worksheets_2nd_grade.pdfIn PDF document text
    • http://xixumosujo.rf.gd/89720927585.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a48e66c-a77a-44c9-8cf9-8400ee578d7d/physioex_9.0_exercise_11_activity_4_blood_typing.pdfIn PDF document text
    • http://jasopiwutuv.epizy.com/agenda_escolar_2019_para_imprimir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e9d9632-f8af-462b-884f-b860ba0739ad/xeduno.pdfIn PDF document text
    • http://zijiwaras.onlinewebshop.net/texas_cdl_training_handbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68fac402-9024-4f59-b572-69d6db47ced1/vemul.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_off0000e882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE882 5060 bytes
SHA-256: 765d48741b0b8803220dbd547d0e91766dd8d91ae83b4f93f05637f1b05939b4
font_01_sfnt_off0000f9bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9BB 10608 bytes
SHA-256: b9d92f50164129a0ba7204ff35bfb7576f5691173dc89998e85208d506284f95

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