Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bdf14de3b1f2eb5…

MALICIOUS

PDF

67.3 KB Created: 2020-12-20 15:39:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 4ec115f46928fb435d4e9b44a02e6a32 SHA-1: b83b41de8826f0a668196e39d8ba6f2576cdb415 SHA-256: 3bdf14de3b1f2eb5be7f58f6506aab57641f92861e4f2cb95b0acbd7a7afbb91
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 0.9998

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/strik?utm_term=don%2527t+do+school+eat+your+drugs PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384035/normal_5f903f8c1f95e.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/zumomasugipeno/form_score_sheet_basketball.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cf4a342-c68a-4109-9d02-4620b7c96d1f/4869763127.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/zalazadavuzevukafejovoraf.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/63316141123.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/topology_optimization_theory.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce808709c9fd2c9bc28b51/t/5fd5f6dd154d727871e08717/1607857886628/81005854658.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/5mm_thick_mild_steel_sheet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2bc52c6229360ecb8cfc0/t/5fceca347cc0b10a0abdd53a/1607387700752/bleach_immortal_soul_character_release_order.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/pufupuji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31fdb1cf-d7f7-4a5b-a005-255ea8136e1f/23453049695.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/7269488876.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/nex_guide_duo.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_off0000c939.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC939 5336 bytes
SHA-256: d3c288c23dccae77f3a9e65e9056b7c415773f17911c4f1e4113ac3cf1af1d69
font_01_sfnt_off0000db70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB70 10904 bytes
SHA-256: c608427a32df0db126d0f55a0e9d4517a0c5550dcff215e589122ff75a22d60e