Malicious PDF — malware analysis report

Static analysis result for SHA-256 d49224ab1810901e…

MALICIOUS

PDF

79.1 KB Created: 2021-02-25 11:56:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 97fdbb6db5677333d5de0e92ae20e89c SHA-1: 9f80edfeeb3dc3f7074d901a00b60fd5bf3dab48 SHA-256: d49224ab1810901eb7d47792085bea3de3c74aad2dfc07666beb8d31513b10a0
214 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with several pointing to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of numerous external PDF links suggests a link farm or phishing attempt to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/strik?utm_term=snapper+28+inch+riding+mower In PDF document text
    • https://sukanogijero.weebly.com/uploads/1/3/4/3/134333185/2108931.pdfIn PDF document text
    • https://cdn.sqhk.co/muluxodipoto/cgiUruq/73181687720.pdfIn PDF document text
    • https://sedesafatowezu.weebly.com/uploads/1/3/1/4/131437285/raled-rosomugow-josodalalesetag.pdfIn PDF document text
    • http://lnstagramservicecopyrights.com/dark_souls_3_strongest_bossesppo90.pdfIn PDF document text
    • http://all-system7.work/free_of_aiye_nsare3ovzi.pdfIn PDF document text
    • http://tb-films.ru/mfc_7840w_drum_resety11i9.pdfIn PDF document text
    • http://cardioactiveufficiale.site/watch_transporter_2_onlineews09.pdfIn PDF document text
    • https://cdn.sqhk.co/zisenusaf/jgharhd/39712370869.pdfIn PDF document text
    • https://solekavugixe.weebly.com/uploads/1/3/3/9/133999951/gunibexunuku.pdfIn PDF document text
    • https://kenazago.weebly.com/uploads/1/3/1/0/131070597/57d06e8356ebda.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/gagagakigibapo/fishbone_diagram_template_visio.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/jukekikuludem.pdfIn PDF document text
    • http://zerakunutage.epizy.com/32038977590.pdfIn PDF document text
    • http://selaxarizipa.rf.gd/lonutudanozoduloxin.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/adobe_photoshop_cs5_filehippo.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/nakopujolovazuruwis.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/9603482650.pdfIn PDF document text
    • http://jenikov.epizy.com/creative_powerpoint_templates_free_with_animation.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_off0000f8cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8CD 5796 bytes
SHA-256: 7cb569aec57309c63ee2ae70541bcf2f6375b592ff616534f4272f86a029ac55
font_01_sfnt_off00010c6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C6B 10396 bytes
SHA-256: 8f67ed1705b34253b4a3ce4578392514ea953a53e455f5d732bf8c6476a7ea47

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