Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0a3a2ec67a46257…

MALICIOUS

PDF

67.9 KB Created: 2020-12-17 07:26:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: c399dbf453576840e8531659e0ebf303 SHA-1: 9a2b2ab82e22ce847272ebd7c7953ca4f6c40ca5 SHA-256: d0a3a2ec67a46257fe5897185a912f224d9104a301d230dcdbc0671ebab7842f
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URL that, when clicked, leads to a domain associated with potentially malicious activity. The document body, though partially obfuscated, suggests a lure related to a 'go kart wiring diagram'.

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://traffset.ru/123?utm_term=gy6+150cc+go+kart+wiring+diagram PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459941/normal_5fa43261e7437.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484623/normal_5fcaf873a7d9c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389606/normal_5fcc840050705.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373999/normal_5fa3e0cf62541.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/5fa3a7a5-ebc6-4f4b-ad24-3ac55501aaab/nofabalavizosafewug.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/70846379597.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc39171c6229360ecbdae8e/t/5fc96c7eab78533d483aebeb/1607036031334/bupekivemurujoxutidexir.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc57e0612facd59cecc162a/t/5fcd80157ae85b53b2a8f9bd/1607303190642/pefexosewugopavefapagu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7065b382bec7399f51dd2/t/5fcd61f2eb18547f4b96dbd7/1607295474739/kujijorisewigedapurejixa.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/xabetorewalenuzoki.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/polarization_of_light_by_double_refraction.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27b67c14dfd36fefb9266/t/5fc618a0cb3e0f5771205dc9/1606817952767/62608659108.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4bfca24b06a7eb3181a05/t/5fcdb00174a40730fbb6b4ef/1607315457398/wrecking_ball_coffee_union_street.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_off0000c8f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8F1 5808 bytes
SHA-256: 3e607d6ec9a8724efccdd035cd51c13223936f5eeee72155ba8c29a36a8ca7ba
font_01_sfnt_off0000dcdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDB 11040 bytes
SHA-256: eb1cc9e2d67bc9e55f7cc2a1d884b3c3f0bff54f8e1831da22e40ca7c2c4b551

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