Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e79a91ec865eec9…

MALICIOUS

PDF

65.3 KB Created: 2020-11-18 22:02:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 8fc7e22cf216e06b8344b826c21e26ad SHA-1: 737202d202be5047b84150eea863576c2bc7fb55 SHA-256: 7e79a91ec865eec999639c05756b5c51382626628bba38027e753e572c0af731
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to 'trafficel.ru', which is flagged as suspicious. ClamAV detection and ML classification strongly indicate malicious intent, likely for phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

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://trafficel.ru/123?utm_term=pogil+activities+for+ap+chemistry+advanced+periodic+trends+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375514/normal_5fa48dab0ab71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366408/normal_5f8c5885dfd24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413244/normal_5fafd1eba68bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384318/normal_5f8de9309e134.pdfIn PDF document text
    • https://supertallteacher.weebly.com/uploads/5/8/5/9/58595767/aIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/apache_tomcat_windows_service_installer.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/the_lonely_island_tour_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b63a4d8-0537-483a-99b6-b4938bd8be3c/jazilifiris.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d5c5a7d-3770-411a-a026-d40ba427be5b/how_to_download_both_mods_and_shader.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f410eb6-1adf-4c95-9485-da1818209ea7/amazon_prime_now_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2667db80-8f6d-4061-b1fe-95c10ef0fc15/pedawimobudirememuga.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/22765329047.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/digital_photography_complete_course.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/215e20c8-8eb4-4eff-a554-36f318ae8711/etapas_de_la_niez.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_off0000bc51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC51 5824 bytes
SHA-256: ae51637323661d8eba4aa9b0dd8cf8210779169829a20a570885392bc137e1fd
font_01_sfnt_off0000d01d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD01D 11832 bytes
SHA-256: 9f941b2824c3b4d6b3a08c58c5e73ab3a584960f936deee4b2d3f6f5eaf56adc

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