Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc02fd8b69e0f0a5…

MALICIOUS

PDF

80.8 KB Created: 2021-02-11 09:28:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 1fd232c53c1bf787a32f582492255adf SHA-1: 20f934cd23e115aa9272ce2adc82476e403fbe86 SHA-256: dc02fd8b69e0f0a52aa788d8b9d775c8c9aaaf48494c7854f2c8d82c119608dd
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user. The document body, though heavily obfuscated, suggests a lure related to financial concepts, aligning with phishing tactics.

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://jacksth.ru/aws?utm_term=mercado+de+valores+concepto+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4401697/normal_5fdb9012ce30d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449630/normal_5fc7e9d4a3305.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481988/normal_60031ee44ac4f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381759/normal_5feb8e040ba7c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411918/normal_6005578235ed5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427793/normal_5ffea3dc950cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367668/normal_5ff77346e6287.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385214/normal_601e350516eeb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408176/normal_5feb70c61683d.pdfIn PDF document text
    • http://gisonanezoboru.iblogger.org/27598177978.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473410/normal_5ff0281b631cd.pdfIn PDF document text
    • http://betmoy54.com/stylish_fonts_download_app08516.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://muzokusadozejog.epizy.com/60899006393.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/61025525709.pdfIn PDF document text
    • http://pikawin.rf.gd/82890025902.pdfIn PDF document text
    • http://japorivexasore.epizy.com/robukifexutunej.pdfIn PDF document text
    • https://s3.amazonaws.com/medaliwifufugel/76269284879.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_off0000fcbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCBD 5212 bytes
SHA-256: ec8ab85e21269d93555b7c0e59d1560e82095431e0489b6d87940fc80fa062d4
font_01_sfnt_off00010e9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E9D 11592 bytes
SHA-256: fbce3de21942c480178ab169448a8b08b556c0d5ef2af1b43bb547f7f07fcc88

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