Malicious PDF — malware analysis report

Static analysis result for SHA-256 87ba0cb0781e9d84…

MALICIOUS

PDF

153.9 KB Created: 2020-11-24 01:51:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 799da65750f3f8877dba640ea45082ea SHA-1: 93264f4b22a68f6d20b046817b17e299793cd773 SHA-256: 87ba0cb0781e9d84efc8b59611745640b8ee2b64e2b189bb5b5a79cf56ff55c9
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a password-protected-archive lure. 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 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://trafftec.ru/strik?utm_term=gita+gyana+odia+bhajan+song PDF link annotation
    • https://pepuzategazeg.weebly.com/uploads/1/3/1/4/131453576/e62242fefe.pdfIn PDF document text
    • https://kafasomawupi.weebly.com/uploads/1/3/0/7/130775431/rukudonasokufu-gokewaxav-bavifil-pudagat.pdfIn PDF document text
    • https://nufulukoveta.weebly.com/uploads/1/3/4/7/134700555/ximafiwezar.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/gisujubolidine/nijefusivuginezejor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8daf506-bcd6-4e61-8f5e-c55c3e6a9db3/21605977718.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/36223648195.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/wabivokidide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/125b4e98-f9dd-4076-9948-6cb6365166ad/18555473578.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b307e59e-afa5-4460-95e5-5012e007e184/4147221274.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6d4ac1e-adee-4cd9-a7d3-009893f04b20/flinn_lab_safety_contract.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_off00022385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22385 5308 bytes
SHA-256: 50cf137a97accc9ccce7ee6351ad4e85077ec701ba1adbe8e14e343d5043d19e
font_01_sfnt_off0002359e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2359E 11040 bytes
SHA-256: 8efdf7f1d307176451fb8af7db7936e22ab928d747a19c64ab63ed6fe2b867e7