Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc3ba6f2ee705b39…

MALICIOUS

PDF

71.5 KB Created: 2020-11-17 08:59:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c172b3f404978b1389a3d960a4f73a35 SHA-1: d7bef4a892c8895fb2c3999f68709c425e7559a4 SHA-256: dc3ba6f2ee705b395d8ed16655b3a026aebea8b15f8b8235d9fd29f4eaecce9c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9997

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://trafficel.ru/strik?utm_term=dessin+a+imprimer+coloriage+magique PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4449410/normal_5fb274f849f86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382948/normal_5f8f42410e7b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389599/normal_5fae014874773.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/42870b73-bcbc-4b9a-b170-37d1cc40b9c1/kittery_school_district_maine.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/malayalam_online_movies_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f06e1d66-028f-44ff-8157-e39d69f3bdd3/kikidiwemokibu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acd84499-6589-4b63-a301-1a4f8517b9de/lizafexabarev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fa4a835-e4cf-4559-8c20-8f0906fbcaf3/wobaputabawexorirebokal.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/crafting_dead_mod_forge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8babaed-abc3-42a5-9765-7ebaf9692898/juvokogegufonirabizotusa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae212d7f-a993-4e95-a845-536116a2dcdf/gubezeve.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/chrome_download_offline_installer_64_bit_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/takeju/tawixojutakuzudepe.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA8C 5376 bytes
SHA-256: 2f1578421f993f563eb9ab54fe7fa62efff421e8c71adb63dd4041c0b4eb6e62
font_01_sfnt_off0000dcbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCBD 2356 bytes
SHA-256: ea105d4abeb442ce1e1617dde074e788538c5e5eb366d13045484d075da18b9d
font_02_sfnt_off0000e77d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE77D 12460 bytes
SHA-256: f083ac7ef429b42403a2f1bf53e01d3a235d8ebb18aed83a742740d49218db9a

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