Malicious PDF — malware analysis report

Static analysis result for SHA-256 e42bb0ea6bc0366b…

MALICIOUS

PDF

77.7 KB Created: 2021-03-20 22:39:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0b14abd04f0281b3d162cb40ddba45fc SHA-1: 81525e3b11c9b1dda3f7150421529ca09e8ba878 SHA-256: e42bb0ea6bc0366b16008c4aa31c41eb255c360037d944f8cf366069e34c4ad0
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-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://baarspo.ru/aws?utm_term=how+to+use+farberware+12+cup+coffee+maker PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366388/normal_601a002839cd0.pdfIn PDF document text
    • https://cdn.sqhk.co/wusezofetib/2Ugh80k/roku_daily_stock_chart.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475739/normal_601f0d53f2fbe.pdfIn PDF document text
    • https://cdn.sqhk.co/parabeset/chfmxja/roveparowetako.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420599/normal_6023670256769.pdfIn PDF document text
    • https://cdn.sqhk.co/padixemugex/amghigi/4372518280.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375896/normal_5fedf65b0bd15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407100/normal_601be6a9c75e6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462096/normal_5ff7717299f62.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/womirofop/kikuxemibinubikaxupi.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/9168972720.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/89175866169.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1ba4815-70d6-4f16-8f2e-18a367500237/omron_body_composition_monitor_bf508_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be1ac9f0-a870-46ad-9c26-660a3cfbc835/xeduduka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df7d8ca7-9e4a-40c6-8bd1-6818548e9e47/24531996980.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f8346b8-c814-4714-bda8-006e5e391db8/substance_abuse_relapse_prevention_plan_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/42241562756.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33bd4a67-4a22-4224-8903-4094589950bd/wordpress_username_requirements.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb49ecb4-f163-4ed2-aa01-c9a3862bcd7b/how_to_fix_lg_washing_machine_ue_error.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_off0000f0a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A1 5572 bytes
SHA-256: b1b60abd6fb4e8fb261587914abbaa5ae011eb66a069de32017665548874e91b
font_01_sfnt_off00010397.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10397 10412 bytes
SHA-256: 288f52da354773e37c369099adb45f89a71866963c9df55f297bea32cb7d1c73

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