Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddd0aab90cb313f1…

MALICIOUS

PDF

89.2 KB Created: 2021-03-06 13:03:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: f45d70af0df2ba243ab99236b1e933a2 SHA-1: 99a7643bd22b326d0cab10e1bc266ec06f95af6c SHA-256: ddd0aab90cb313f1a09490c1c1515b11c108659b01d4976a7cf03c588df14566
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains an embedded URI pointing to a URL that mimics a search result for a popular PDF download. This, combined with the ML classifier and ClamAV detection, strongly suggests a phishing or malware distribution attempt. The file's metadata indicates it was generated by wkhtmltopdf, a tool often used to create PDFs from web content, which could be leveraged to disguise malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://golowaki.ru/wix?keyword=starfinder+core+pdf+download PDF link annotation
    • https://cdn.sqhk.co/gefisodir/jsLhjhe/deemo_reborn_vr_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/kinanekoxo/djbih1e/hd_camera_drone_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/midijanere/jggdgdx/i_can_do_it_vending_machines.pdfIn PDF document text
    • https://cdn.sqhk.co/navotezive/vOjfic3/saxupamusezuz.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/ib8hcja/viporerifosebipo.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/Oidgdih/lidakovarapudujowid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7343c5b-d7a2-4abc-8a80-98149d8a2636/craftsman_15_amp_benchtop_planer_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86dc3299-cd21-4e50-bfa2-821a39961996/the_art_of_r_programming_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3ac2de3-5783-427b-98f4-98b9fc4b88c2/honda_express_sr_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a1785ec-57d2-4569-bf25-93751adf4938/red_white_christmas_lights_on_house.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd6f24f4-2fdd-478b-9ef4-1021c12d7745/kizomareraguxulogomo.pdfIn PDF document text
    • http://matunojusorim.epizy.com/37568174911.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81c7feaa-72c2-41b3-80e6-133e8fe0f457/51075594585.pdfIn PDF document text
    • http://xoponupesede.epizy.com/punowikos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ddce0f8-f2e4-4349-8fb7-00b1822287d1/zobazipu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f875d6ff-ce50-4719-be8c-10c51ba1dc47/2015_lexus_gs_450h_f_sport_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e972557d-ffdc-48eb-a316-b976c08d53f5/amc_10_12_practice_problems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd61752a-7d79-4283-a7e2-c538d080515a/resistance_bands_exercises_for_beginners_legs.pdfIn PDF document text
    • http://watibox.epizy.com/wiwewurujipo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/221b70a9-ead9-4537-a9bb-25adae9cfb2b/mafezew.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_off0001212a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1212A 5168 bytes
SHA-256: 1548d8f0b1f0f38dcb50afee50321adc179e8518e4245e2ad9de2304eb857922
font_01_sfnt_off000132dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132DD 10720 bytes
SHA-256: 9e75e7aed3c0a0cf40230a1145155a9ccf4c050eb978d307675d85d3d3b6d91b

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