Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7d898569689d4ce…

MALICIOUS

PDF

70.8 KB Created: 2020-12-26 01:54:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bdd313ae5c799333d6fb9fb3d68a4048 SHA-1: e07c3eaf472df0957e5a419fc9bd945cb606ced4 SHA-256: c7d898569689d4ceeb88cd98d7d5f996cdeb3050089ebbd03af9bf697c71186f
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'traffking.ru', which is likely used to host a phishing page or distribute further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content, fitting the pattern of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffking.ru/aws?utm_term=lesson+4-+2+reteach+classifying+triangles+answers PDF link annotation
    • https://cdn.sqhk.co/lepemafe/NXgciaa/pureruduzevonoradufojix.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411916/normal_5fc4cf3e3a189.pdfIn PDF document text
    • https://cdn.sqhk.co/guzunilepin/f7gifib/24133323543.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477138/normal_5fe2cb15496ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366366/normal_5f87d4131cbf2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489056/normal_5fbeddcb157d0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465545/normal_5fe196a2c4b56.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/bugutaj/fiwivarudizazur.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/tileradarila.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/liturgy_of_the_hours_guide_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/42732559336.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/farajobazevamumip.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/physics_classroom_waves_answers.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_off0000d362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD362 5528 bytes
SHA-256: 84b1f344176c757d0c8262cc35fa22f1240d2e4d3dc82f8f99253bd083b71140
font_01_sfnt_off0000e65f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65F 11760 bytes
SHA-256: 4fdd713fe1efe1af2d5072af795d7a8437712fd0ecba072e26718dd34875a653

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