Malicious PDF — malware analysis report

Static analysis result for SHA-256 d68e76caafe1ca04…

MALICIOUS

PDF

68.5 KB Created: 2020-11-18 00:32:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: b97a11dfdaeac48b24e6ffb78dc9aa6b SHA-1: d550dbd9251b5e4c213ff39c8c891b928e34d9d2 SHA-256: d68e76caafe1ca0458adee66bbda298383ebd7c97efb9f8f97e08a1161596586
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://trafficel.ru/strik?utm_term=jornalismo+informativo+opinativo+e+interpretativo PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384296/normal_5fa696d399037.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391896/normal_5fa5a6cf99092.pdfIn PDF document text
    • https://wefejakero.weebly.com/uploads/1/3/0/8/130814310/a12e72bd9.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/1cf22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390373/normal_5fae70f0542b8.pdfIn PDF document text
    • https://watuboxe.weebly.com/uploads/1/3/4/5/134588214/304d0fcf9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413007/normal_5f96e113adc53.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/76fbe1b5-f13f-4264-b89a-49ce1407d93d/fagomabodur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76533651-7484-4beb-affa-e19cf2c9cba4/jebaginegusefebepusexes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c7f8135-e588-4bda-95b6-4c0336e6bd76/lesson_10.4_go_math_5th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52d69a83-3de8-45a8-a892-cb1864855847/belesikenoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0dfe0cf-cabf-4569-8a4c-8571bf00c460/77680374068.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbfd65de-21e7-41c6-9464-4daf422a40c8/viwigijozagixe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7aa24718-d8cc-48e6-9933-ff273be4055e/botcho_cream_and_yodi_pills_testimonials.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_off0000ca4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA4F 5096 bytes
SHA-256: d288cf1920d10a2b5bd1bf5bfd587298e5228d7c946b3501fde5d1782c1a197c
font_01_sfnt_off0000db99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB99 13180 bytes
SHA-256: 51b0107fbf5f417b01c7500fde09efbaf65b3b10adf094b7db03e72da45424ca

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