Malicious PDF — malware analysis report

Static analysis result for SHA-256 41261f0d1f92431b…

MALICIOUS

PDF

72.2 KB Created: 2020-11-13 19:13:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0ff19ab3ddec096356eb5be73669d332 SHA-1: 93bce2dfd41405226fd08b615090e5a2fc7feb62 SHA-256: 41261f0d1f92431b50f27450700c87f61244fdfb32350b6e8b9bcc59a099e838
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://trafffi.ru/strik?utm_term=bad+boys+movie+download PDF link annotation
    • https://taxepenobeg.weebly.com/uploads/1/3/4/3/134355702/daxoga-napinar-riribebum.pdfIn PDF document text
    • https://fijefozumomaba.weebly.com/uploads/1/3/4/4/134491855/nagizejuja.pdfIn PDF document text
    • https://leruzifu.weebly.com/uploads/1/3/2/3/132302941/903771d40.pdfIn PDF document text
    • https://dutajidadu.weebly.com/uploads/1/3/4/7/134730474/sodokazid.pdfIn PDF document text
    • https://duveniwapawas.weebly.com/uploads/1/3/4/2/134265961/1589806.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/d3b6847c-0c4d-4a94-84d6-c6d45ce69b15/gopopanew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbd91082-8886-457c-856f-d3153fda839a/free_printable_receipts_for_services.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/o_segredo_livro.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/83945518600.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a00bb29d-3b72-43ba-baf0-0fff368fa115/vonelofibikokob.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/76278325637.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/memufedose.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/127132b8-4107-4c2f-bd89-d6ce70056496/american_express_card_confirmation_number.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_off0000de6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6C 5316 bytes
SHA-256: b18e30125ba95729c7cdc314f3322fa9546a751c825176bf68ebb327a399b6a1
font_01_sfnt_off0000f087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF087 10560 bytes
SHA-256: d1d3ff7f0ad30fef6d5b8df06714a399ff24167d9c7009750253d9410986063b