Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7386369ba421fa0…

MALICIOUS

PDF

143.9 KB Created: 2020-11-11 19:37:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2bb6972025cd901dbffea98e61583223 SHA-1: 2217bd0952a3a7a29b558d43c662e154ccdf9da9 SHA-256: c7386369ba421fa0987fdb00db62e7365f2e18c39c63847755763b908f9f8f7e
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://traffnew.ru/strik?utm_term=unglaubliche+hulk-Spiele+f%25C3%25BCr+Kinder PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369900/normal_5f9b543ac6f78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367961/normal_5f87550a72c12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404133/normal_5f973bc99e90c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403541/normal_5f92f791c8c0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368251/normal_5f87ee0676b9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465024/normal_5fa262f08a196.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/soxukowotomaj/9391035148.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2805312-b478-4efe-be77-168418b176b2/najaborubajosasizejaz.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/muzexu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07444716-efe1-46be-94fa-34343abb8c66/nanaj.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/drunk_fu_unblocked_weebly.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0001fded.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1FDED 27436 bytes
SHA-256: 0ea41aa55ba853ea2d2a6c689be3e3cfc084f6ffca8167315a06629c23d90ecf
font_00_sfnt_off0001bfd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BFD4 5848 bytes
SHA-256: 194a329c9fdb7b6c93edefc1e88ec3ff650ebe7207646ce63657bc912fb20296
font_01_sfnt_off0001d388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D388 12892 bytes
SHA-256: a08fac2b79d14f55c704eebfa7c40d0a3a11c0334dac0069670cb6e4f58181d6