Malicious PDF — malware analysis report

Static analysis result for SHA-256 dec518468bd4ec32…

MALICIOUS

PDF

70.9 KB Created: 2021-02-12 15:54:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 4f64f485a7c1e81aab4c9b5d7996001a SHA-1: 93c2071f35cccfc212ac3810539bb400dee10aa3 SHA-256: dec518468bd4ec32096ef5fce5590261253fd143ee1f84c57fcebee27867df0e
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, identified as a phishing lure. The ML classifier and ClamAV detection strongly indicate maliciousness. The presence of an external URI suggests an attempt to redirect the user to a potentially malicious website for further exploitation or credential harvesting.

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://leonvi.ru/wix?keyword=high+performance+leadership+guidance+committee+workbook+pdf PDF link annotation
    • http://sinagibopugapaz.iblogger.org/rapisupevudoxaporoserixit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414339/normal_5fddcce5abd3b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446388/normal_5ff6921061cc4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://zapudeni.epizy.com/email_marketing_templates_hubspot.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/bavujibujiwa.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/rilomazufajapimofe.pdfIn PDF document text
    • http://butadiviwev.rf.gd/kasabemesofaridu.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/48265549722.pdfIn PDF document text
    • http://demiwadipojaz.epizy.com/56760988072.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/bahria_town_karachi_installment_slip.pdfIn PDF document text
    • http://sufekowanak.rf.gd/french_translation_exercises_with_answers.pdfIn PDF document text
    • http://rolozaj.epizy.com/south_baltimore_crime_report.pdfIn PDF document text
    • http://bopadobaxu.rf.gd/42359395805.pdfIn PDF document text
    • http://volowunodevikel.rf.gd/9433867428.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_off0000c9f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9F1 5708 bytes
SHA-256: 5019f7509f212155ff105c9748c61398976d1e995cd562414a8aec5781e702aa
font_01_sfnt_off0000dd40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD40 10280 bytes
SHA-256: 596427c1463df4e45624185f6f7d845c3209bdd649efbc7cd936e82240c08254
font_02_sfnt_off00010060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10060 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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