Malicious PDF — malware analysis report

Static analysis result for SHA-256 de3003b4e51ddb63…

MALICIOUS

PDF

82.5 KB Created: 2021-05-10 22:21:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ab9a5c8e2dcadbeab536da2706614ccd SHA-1: ef072086770dd986ca3d56ed344683dcf01fafd4 SHA-256: de3003b4e51ddb638e2886673e39df894f1a2b53a7a8d657188e1ed2c8a5afb1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xajibur.ru/strik?utm_term=amplificadores+de+sonido+usados PDF link annotation
    • http://wigemefigiw.mygamesonline.org/6828261911.pdfIn PDF document text
    • https://zusonugen.weebly.com/uploads/1/3/5/3/135305237/suzilasax.pdfIn PDF document text
    • https://jofudetazowus.weebly.com/uploads/1/3/1/6/131606688/d1af6d9d.pdfIn PDF document text
    • https://vuxofuta.weebly.com/uploads/1/3/4/2/134235669/3e3f3c6f.pdfIn PDF document text
    • http://rating-bookmaker.ru/dozarepenotunowababixawmfa2.pdfIn PDF document text
    • http://novijixonusasu.mywebcommunity.org/vutakeri.pdfIn PDF document text
    • http://miromawetibikew.mywebcommunity.org/86830953583.pdfIn PDF document text
    • http://sozaxesugoj.mywebcommunity.org/57958457600.pdfIn PDF document text
    • https://pavibizad.weebly.com/uploads/1/3/0/7/130740264/6563416.pdfIn PDF document text
    • http://goromeo.club/vuxepodifigedajufatorajim3vucz.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/b9cdf1e2-baa5-49a6-91a4-48f9d7fcbcf5/28562452140.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/96154091399.pdfIn PDF document text
    • http://pujumek.myartsonline.com/how_to_reset_arris_dcx3510-m.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44ecfcff-63ef-4753-b45d-035315b71636/how_to_change_battery_in_tissot_1853.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c9b9de4-9e07-43b8-ac4a-e7353c650c29/taco_bell_breakfast_menu_vegan.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/bpi_savings_account_opening_form.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/vadogipesedarazujodusub.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/43811673516.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/define_mandated_reporting.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_off00010100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10100 5288 bytes
SHA-256: bf1446acd34c64922a55ad2184d629b5594db698bcc57bfebdb97ebab2bb9b33
font_01_sfnt_off000112ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112EA 12820 bytes
SHA-256: fde1dfc6ab5352bdd75dc16c6fc66c4534d848a841461589c3f443032fc9e098

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