Malicious PDF — malware analysis report

Static analysis result for SHA-256 be3fbe6c9b37fa36…

MALICIOUS

PDF

74.8 KB Created: 2020-11-17 19:20:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c1bc2e5d68daf2e3b61c8b7060d3bc96 SHA-1: 5c4fad9b60c023f63a3ea164572dafd548332c17 SHA-256: be3fbe6c9b37fa3615813e001314ad21e23da49f1bc0f278b0ac0c3ceb06fe38
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-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/123?utm_term=the+fish+elizabeth+bishop+victory PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386618/normal_5f905b4588db5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412767/normal_5fa276ef0416b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447089/normal_5fab72213eb52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385647/normal_5fa86ce43c64b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381988/normal_5fae11ed0c306.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/c3117456-fa0f-44a6-89f0-5738c1027821/piravutibusag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1de03709-3557-4351-8e31-4cfffb647f42/29652497766.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17fdcf81-4643-452d-b43f-c15c13bfde75/54322760945.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a16b485-f45b-44a8-86b0-b04f1b4a82a9/tipos_de_diseo_industrial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4f50a8e-49cb-4565-ac75-4d5c76328ac6/20831019961.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cccb96b-d711-4c4d-9d8e-df7eda9de3bc/38138891379.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec9ee392-e0d8-4bc7-86c2-fe16252d21d8/kokonidaxolonoguxopo.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_off0000e5b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B0 5404 bytes
SHA-256: 68956872224298c68ba7bfa41e996d5e81318353f085e8302f44f1ca8c7789b3
font_01_sfnt_off0000f81e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF81E 10728 bytes
SHA-256: bdc3418c6c185015413214b8f665a25d1bdd4418b21975524a6ec21bd83ae294

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