Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad8d367330e3e973…

MALICIOUS

PDF

69.9 KB Created: 2020-11-23 19:42:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 4495657bd63f7352f1fe4c85fb003857 SHA-1: da0a5d9465ea7aea6991e51086abb7d7cbada57e SHA-256: ad8d367330e3e9732406ad1ed488f07099300b7fe11b34c00887aad990927206
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 0.9998

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://traffnew.ru/strik?utm_term=what+makes+a+good+sidekick PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382208/normal_5f97744323493.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407084/normal_5f95ddb4833d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368475/normal_5fabbc67633be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402963/normal_5fad864b863a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426820/normal_5fa5ec22f33b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377400/normal_5f8a0e0900c9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388283/normal_5f9e680b82fd9.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/321186e0-ce94-4ad6-a787-060071213de7/copper_sulphate_molar_mass.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56be7577-7e19-43e5-849d-9761afe26332/jordan_peele_get_out_wiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfa696ae-99be-442b-af44-657380712662/cmk_223_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6f222a4-cecc-431b-a09c-00a4c11fbfe9/tijomokuzorudi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd6ac8d9-b81d-4d7d-8cca-278152fdc7d4/xefawevuzu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db2e3a3b-e3e7-4aa2-b0e3-a9a5ebd23d44/wavadozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1d85191-05f2-4c46-8c62-59f8382a63d5/35481595589.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_off0000d65d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD65D 5304 bytes
SHA-256: 21ce7857d7694525e1c528db4f1e9995edc2a95ffc61d2253100b6e4e1c43ca9
font_01_sfnt_off0000e850.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE850 9956 bytes
SHA-256: 5a26cb120fc44dfac16606f36314ff508cca94ffe496af3023aabda65c4295ae