Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee001b9cde53231a…

MALICIOUS

PDF

134.2 KB Created: 2021-01-05 15:25:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: cede98f20c080a6e56dc2ef937f50309 SHA-1: 74b06efb35eb14d9e753961b0b54b1038d68e0bb SHA-256: ee001b9cde53231a6e6e3a6ef1e04b6a84f735368afe9c05015c9772755a2b64
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The ClamAV detection further confirms its malicious nature, classifying it as a phishing trojan. The document body, though heavily obfuscated, contains references that align with the external URI, suggesting a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

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://trafficel.ru/123?utm_term=xtrap+bypass+2015 PDF link annotation
    • https://cdn.sqhk.co/bajilevone/cjhjbgd/5719271659.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/wegugus/80831182451.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/numbers_1-_10_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/18124383776.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1990482-5bd0-4509-afce-2b7623aa0f41/wogowela.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/filled_medical_fitness_certificate_format_for_job.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/54010829009.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/39405434189.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/kenmore_elite_he3t_error_codes.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/bordereau_report_example.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18106 6660 bytes
SHA-256: 55f1c6d11f2c22cbe2db30e7e427e8b9054b18679c1597ada9d61a544c0d12fa
font_01_sfnt_off00019795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19795 5452 bytes
SHA-256: fa1e4e2ce16716e93deae44ac1078dbce0f18f699058d3d334bae11f5cd4ad24
font_02_sfnt_off0001aa28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA28 9368 bytes
SHA-256: bf9a26b7f094d4ca7f70af78026a80eceb6bf3d2da50dfd555fb7f77797e7b88
font_03_sfnt_off0001c454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C454 15260 bytes
SHA-256: 78ac869f148f4018c6e26ab548b98e0277aeb51ad1840b35f2e1440527678eb5
font_04_sfnt_off0001f466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F466 16596 bytes
SHA-256: 64ef3e34bb661c299945e153eeebcdb1477a23da48be707330872b3e907ea9b3

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