Malicious PDF — malware analysis report

Static analysis result for SHA-256 01e1a440fdd87c7e…

MALICIOUS

PDF

69.6 KB Created: 2020-11-18 06:16:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 569ff9e85230e09311112399b59a8f34 SHA-1: d90b6caae15b585f5d491d81aa51b1bbd7ef6d4c SHA-256: 01e1a440fdd87c7ec897ae5fb54f4b8415ca6a48c2ead7a4cf1be8e29e8000be
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 0.9997

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://trafffe.ru/strik?utm_term=interpretacion+geometrica+de+la+derivada+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4455380/normal_5fa74c85d0ae4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383679/normal_5f97f97fe1187.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413455/normal_5fa7286c4b4f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483331/normal_5fa6fbf6c3fb5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/sonicwall_connect_tunnel_32_bit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f9b111f-eb22-41ce-a828-408d30d1d93d/vavuku.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/60468023566.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3775b208-19bb-44d7-bfac-d9cb3cf30d16/chicago_electric_18v_battery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e861af79-e4a7-4449-bffa-ec9cedf3722b/lash_excel_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da53b151-f749-4be4-9d22-c62fd25849c9/22176609543.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95671d3e-66e1-457d-b398-d766434ad541/gugasixafeziw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83051845-4b91-4503-948e-2faa880cef8f/bamarixuwoboxogunedi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3aa501ab-e612-44f9-be83-cb134519a0c7/razor_guide_dota_2.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_off0000cf9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF9A 5296 bytes
SHA-256: ca6f7c2d8c90b67e119edd5bc31a55293efda162b0c22dba879a83dea699cd51
font_01_sfnt_off0000e18d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE18D 11856 bytes
SHA-256: 688f806e6bc7d48e0b5b98213ebd0c67e97202800490394702039b7878275d45