Malicious PDF — malware analysis report

Static analysis result for SHA-256 da0cbe4d5d69008b…

MALICIOUS

PDF

73.5 KB Created: 2021-03-04 08:28:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 73578b9daebe04ea0db135cf2c18f848 SHA-1: 30e9a660077aa33071099cc26f7d46f9e6a0cef2 SHA-256: da0cbe4d5d69008bd05fa547e18896a120f4bdeed926095cea66604b216ac1c6
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics as a potential phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to contain metadata related to the embedded URL's keyword, suggesting a phishing pretext.

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://nipisod.ru/wix?keyword=boxer+breeders+ny PDF link annotation
    • http://jogemijafiw.22web.org/call_to_remembrance_farrant_sheet_music.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408878/normal_6008a01c60d34.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401976/normal_60067fa9d8107.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465149/normal_6010e4ac2785e.pdfIn PDF document text
    • http://xogumilagu.iblogger.org/snowflake_method_template.pdfIn PDF document text
    • http://wopafopu.22web.org/giniwaxanegafowodozinoti.pdfIn PDF document text
    • http://maporirunigis.22web.org/true_believer_movie.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389084/normal_5ff4d6221d3c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497369/normal_5ff2f9926e69a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499635/normal_603a07598380d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366976/normal_602a2dd46bd17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500674/normal_5ff2c0f7141fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405930/normal_600c9ae8d1917.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zenowalu.rf.gd/supply_chain_management_sunil_chopra.pdfIn PDF document text
    • http://gowatane.rf.gd/colon_cancer_screening_guidelines_how_often.pdfIn PDF document text
    • http://reniwen.rf.gd/reading_passage_disorders_an_overview_answers.pdfIn PDF document text
    • http://xifawuzegeliwag.rf.gd/63406630001.pdfIn PDF document text
    • http://pisasegobure.epizy.com/30451271326.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_off0000e314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE314 4936 bytes
SHA-256: e25b898a948fde3191843edec4bb27ee4c3bdff954376d4127890b854d7b475d
font_01_sfnt_off0000f3f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F9 10796 bytes
SHA-256: 8e286c10fa56d775a08b266b2075563c6a005025416f274e9e806332d0353c2f

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