Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2fb8d0dcb7ede4b…

MALICIOUS

PDF

72.2 KB Created: 2021-03-31 07:50:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: c803664f3b879c80ccb2733b51fc73ef SHA-1: 063d7f35ad6924a8336d96b4faa5cfb98440c65e SHA-256: c2fb8d0dcb7ede4b1c4f5a32f4858a32eb7e3d86434b1fa4bc7c20347bf5ae83
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of a large number of external links, including one pointing to 'mezovuduw.ru', suggests a potential phishing or SEO spam campaign. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a malicious document designed to lure users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://mezovuduw.ru/wix?keyword=guide+gear+athletic+shoes PDF link annotation
    • https://cdn.sqhk.co/jotoselu/ehchfgC/kozozavofixotonisewowobe.pdfIn PDF document text
    • https://todumubisopid.weebly.com/uploads/1/3/5/3/135312552/tiropefixiju-vawelogazi.pdfIn PDF document text
    • https://morisoxurekes.weebly.com/uploads/1/3/4/4/134464458/95a0f.pdfIn PDF document text
    • https://jematujevuzonip.weebly.com/uploads/1/3/4/2/134235480/fc67ca8c6.pdfIn PDF document text
    • https://cdn.sqhk.co/lamidipeke/oxvXiaK/swamp_thing_1982_full_movie_download.pdfIn PDF document text
    • http://fibiver.mygamesonline.org/35042619291.pdfIn PDF document text
    • http://bosuxezaxad.mypressonline.com/95408586505.pdfIn PDF document text
    • http://pefipegukanijel.22web.org/new_adventure_games_for_android.pdfIn PDF document text
    • http://bodaweziwov.mypressonline.com/my_first_abc_chart.pdfIn PDF document text
    • http://pifanaliriwabo.mygamesonline.org/algebra_2_probability_test.pdfIn PDF document text
    • https://cdn.sqhk.co/gabadifofibo/gethbif/kekoworotopuzodunidag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/curso_de_espanhol_avanado_online_gratis_com_certificado.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/wozarosamobaxabeg.pdfIn PDF document text
    • http://nomamazuzut.atwebpages.com/ecuaciones_de_segundo_grado_ejemplos_formula_general.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/53572737731.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/tuwezolenovobujegixoju.pdfIn PDF document text
    • http://jozobudesurarab.onlinewebshop.net/61714395962.pdfIn PDF document text
    • http://baxovebiw.rf.gd/citizen_gents_eco-drive_titanium_wr100_titanium_chronograph_watch.pdfIn PDF document text
    • http://xokovuwewa.epizy.com/tifipivupenijevozafan.pdfIn PDF document text
    • http://memirilili.epizy.com/fanogovexefalerusole.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD200 2960 bytes
SHA-256: 3c6502e04658d985b37ed967139d4b1bb7136c1c8ff06868e6b64c17630b7d50
font_01_sfnt_off0000dc83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC83 5232 bytes
SHA-256: 8cad27af94d4b346b9e2f5f113b1929b7ec32592d0615659d1bfe18e06ef1e67
font_02_sfnt_off0000ee4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4E 10976 bytes
SHA-256: 62d5a53818d5fc667ea12fb82041a221f3e9d83e16fd3d293b418dd04fb3f20f

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