Malicious PDF — malware analysis report

Static analysis result for SHA-256 29c9325cece7c8a2…

MALICIOUS

PDF

86.1 KB Created: 2021-03-22 15:43:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: c14fdc2290cfc14016f79045b2ccafde SHA-1: 0cb3d4d77d4ae647800c13425551f257f4d5a0c7 SHA-256: 29c9325cece7c8a25210c0e76d7ab0bd5f163bf2287ca5339a66c688b700f1fd
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, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of the file. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for further exploitation.

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://kuzutuzo.ru/wix?keyword=honeywell+water+heater+gas+valve+cross+reference PDF link annotation
    • http://italiabeach.space/45124618414yk1sk.pdfIn PDF document text
    • http://forexgeeks.net/noxizixnio5g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481289/normal_605631fc1f508.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465690/normal_5ff1b3e217f0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368251/normal_6034de7499938.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/nefunupu/86169350673.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e9f16d7-9ff7-474d-9b65-6158845ceef4/bovilodokudupuki.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/reading_plus_answers_level_d_see_reader.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed790f45-1e88-4f66-9936-b6a70e17c44b/how_to_develop_editing_skills.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce2b2a8c-9b87-47c3-beeb-025af8c287d2/why_are_there_books_missing_from_the_bible.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/e_medical_report_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/2003_dodge_durango_towing_capacity.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/67546955479.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/wigexesuzoje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7aa67f91-ad76-404d-9add-5c8965654373/how_do_you_type_the_beta_symbol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee560fc5-0182-4865-b0c0-85eed96762a3/zosud.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010790.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10790 5100 bytes
SHA-256: dd19692b1431cc580160ad06ffc626c55234ca1d1c1ae197e36646cbef1ba2bf
font_01_sfnt_off000118fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118FB 10792 bytes
SHA-256: 2dd091fd13dc840f2a8352f96a34a9d90ad3d609ef78c869a659c4812d228367
font_02_sfnt_off00013dea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DEA 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3