Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d381e216642342b…

MALICIOUS

PDF

83.5 KB Created: 2021-05-30 17:40:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 9b6ae9b12b71891cab7002cf6d99d3e3 SHA-1: 2939625c19913c8f9c41d0d052c07e9a37c8c3c7 SHA-256: 9d381e216642342bebbbe3c26e9826b0850183a46e9a8e7e182d8cc5eba69089
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a payload or phish for credentials. No scripts were extracted, but the presence of external URIs and the overall detection profile suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mezovuduw.ru/strik?utm_term=oneplus+7+launcher+for+any+android PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417129/normal_5ff548289f7b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409248/normal_602c22847cab4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390068/normal_5fc69426558ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387218/normal_606c3a8e0e55c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478415/normal_5fc83cf8c17a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485935/normal_5fe6c93cc18db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424645/normal_600f256351787.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423188/normal_60139cd0832b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446168/normal_60247dbd5eb3b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402710/normal_5ff1dba126157.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451231/normal_603a073cf3674.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426810/normal_5ff1f5ec1f5d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416653/normal_603a4014635d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495264/normal_5fff6b340bae6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408990/normal_5ffac726b0972.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://uploads.strikinglycdn.com/files/3453cb16-0a6c-4146-ae49-aeb23a2394ff/juvatafatilakunotax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca6a2266-6042-4815-83fb-c16cd0865017/xomuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5872f946-e159-4421-8c2b-3a33f9cd57c2/jowodawulugusip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed395943-2cf6-4b21-a7fb-b3e7998e1cad/the_cask_of_amontillado_literary_analysis_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b431fedc-a027-4646-b572-17983e606098/79300293699.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f89ea04a-29c1-4f7b-9639-b7ecab47ddfb/metititakifapepapop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64263f19-ec55-484b-a931-a9a3e60512c5/ronco_pasta_maker_recipes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7890f759-08aa-4939-ba6a-4ec3684525a5/final_fantasy_xv_guide_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b1f6b00-577c-428c-a056-e9a034b0f132/what_the_coldest_it_gets_in_ocala_florida.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_off0000faa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA1 5252 bytes
SHA-256: 04ed6d0366b8d728a14e4caf8418ed90d94e6e04b1724300be144be32b1eb0c6
font_01_sfnt_off00010c77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C77 11128 bytes
SHA-256: df67908b32b6cc3734e9cd73eb25eb84ce22e2c1cf2c327a0584c2f9855d960d
font_02_sfnt_off00013232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13232 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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