Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b91964e6707e9ab…

MALICIOUS

PDF

79.6 KB Created: 2021-04-01 00:25:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 24f5a46275003e4a14fce0109be7c20a SHA-1: 3d4d239925228e832873dfda306ba1701795ecb3 SHA-256: 0b91964e6707e9aba4ea5d14489eb875b78fca41db8527ff4dcfe1ae4f8c86dc
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 attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the presence of an external URI suggests the document is designed to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://xezojetit.ru/123?utm_term=aha+guidelines+2015+noncardiac+surgery PDF link annotation
    • http://rubolanir.mypressonline.com/house_of_usher_2008_online.pdfIn PDF document text
    • https://taruzalo.weebly.com/uploads/1/3/5/3/135398133/4548720.pdfIn PDF document text
    • https://puxolulif.weebly.com/uploads/1/3/4/3/134356270/rawavejaxif_ribebe_dudobewavel_vuvava.pdfIn PDF document text
    • https://sumajodezidozi.weebly.com/uploads/1/3/3/9/133997227/4457572.pdfIn PDF document text
    • http://xomunuxeju.sportsontheweb.net/36631002576.pdfIn PDF document text
    • http://jarewitof.mypressonline.com/gopevugeredud.pdfIn PDF document text
    • https://pakokapixufepu.weebly.com/uploads/1/3/4/6/134659136/4776567.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/dejazuvorira/92192781521.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/rusufazinujedokow.pdfIn PDF document text
    • http://zijiwaras.onlinewebshop.net/53543698891.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/38604602235.pdfIn PDF document text
    • https://20996a60-9695-4f45-8fdb-44bdc783da55.filesusr.com/ugd/c57cae_597fb2ab05f44455a701bd99140d99e6.pdf?index=trueIn PDF document text
    • http://xawiwevivuzox.onlinewebshop.net/31886639741.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/22156887167.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/453e19f8-c1fd-43a2-94c2-3a6e877c9ce7/sawixatib.pdfIn PDF document text
    • http://zunijakokusageg.epizy.com/fetch_your_news_arrest_reports_union.pdfIn PDF document text
    • https://ccd4a2e6-63e2-4dcb-a02e-1ae1253dabcc.filesusr.com/ugd/059ff1_0906fbcdb3fc40dda90675fd68094466.pdf?index=trueIn PDF document text
    • https://86908e24-11f3-43a1-9346-bf531f45ee0b.filesusr.com/ugd/97493d_df976d49d87a4a22bd932e11f36f019a.pdf?index=trueIn PDF document text
    • http://jusowegakero.epizy.com/mujubifi.pdfIn PDF document text
    • https://3cde87c3-25ab-478b-b58d-ba072f1c7540.filesusr.com/ugd/255d97_f06213d9b34f4df093297a46bce01c5b.pdf?index=trueIn PDF document text
    • http://xozinosawadijak.rf.gd/begamevat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59d037f7-6598-43ce-84e7-cb3866a6c805/38928955197.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/170b9b81-cec9-444c-8b10-0bb06299250d/what_does_number_555.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_off0000f5be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5BE 5740 bytes
SHA-256: ca20e3c24631bb899ded684c1001bbf288b2572db365729df959797e1c1203c1
font_01_sfnt_off00010958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10958 11412 bytes
SHA-256: 3c71123c40b6ccf782a47130ef5b5ee368be0e1840b4938a614e78880174b9ea

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