Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbdfa45a86036364…

MALICIOUS

PDF

71.9 KB Created: 2020-11-22 03:11:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c2be0cb56938a28ea950552bf8b2f994 SHA-1: 6e9d1042d705131dfbf1a537e767e503787d52e7 SHA-256: dbdfa45a8603636418b7cf77cfed06ba5fbe7a485b39f4f8cf60092317b0b315
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 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=david+clayton-thomas+youtube PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374380/normal_5f89081a8e5ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392862/normal_5fabc76ede477.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381976/normal_5f8c8c1e09140.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374189/normal_5fb6aec357d59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370088/normal_5f9c4b69ebde6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391317/normal_5fb9679f7cec7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389354/normal_5f9c4eb12e30b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371543/normal_5fa73b2bbeaf3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tuxutedi/jevovapenigakixoguxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33499e57-6792-4148-b7b9-71110fab2366/29863564896.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/netekizesokube.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/wabirurazugelutawe.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/action_and_linking_verbs_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/pichuva_kaththi_tamil_movie_hd_720p.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/singular_and_plural_verbs_worksheet_grade_4.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_off0000cee8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEE8 5300 bytes
SHA-256: 3cb5028317a075f7ea62ddf4a1553b20bc42097ff8795cd4c623f33ac827f720
font_01_sfnt_off0000e0ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0CE 10564 bytes
SHA-256: dbb61ad1db3b33d55a2f9146262623e6dc393851b24e86158d8e85e8ce5a3cf9
font_02_sfnt_off000104d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104D9 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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