Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a1ed4589da70920…

MALICIOUS

PDF

77.9 KB Created: 2021-03-29 14:10:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0b8e72b542e7db4443dd1d5f915120cd SHA-1: 45120b2a42cc82682038c1dd0890079c2cd39147 SHA-256: 0a1ed4589da70920b834c5585088099a8e207de7c8068d0838d4ffd6fe338a75
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://nipisod.ru/award?keyword=analytical+reasoning+techniques+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4491159/normal_5fcb370a5d741.pdfIn PDF document text
    • http://llloooodddd.space/pesijefiraluwk27cy.pdfIn PDF document text
    • http://bioforce-co.site/why_is_my_edenpure_blowing_cold_airrhe76.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451205/normal_5fec2a3e5d50f.pdfIn PDF document text
    • http://arboozfilm.com/hal_higdon_marathon_advanced7wu28.pdfIn PDF document text
    • http://konalofasu.mywebcommunity.org/amtrak_empire_builder.pdfIn PDF document text
    • http://gimakelodikovij.iblogger.org/89324926664.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392857/normal_602091d0c4999.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://53ee2ee6-42da-4c96-954f-60f726bc8d53.filesusr.com/ugd/de2744_211e47a827ba43789251d16b983853c1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/xewebafiwur.pdfIn PDF document text
    • http://pusebirenox.myartsonline.com/89401341452.pdfIn PDF document text
    • https://ced6af22-cf5f-4df0-9cd6-2d424634d287.filesusr.com/ugd/3eed2b_55f1a3816cc24180b096af2752562f57.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tisegovofu/zipesilimuvakorerefip.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/anantapur_kanekal_weather_report.pdfIn PDF document text
    • http://xaxefoz.epizy.com/bissell_big_green_carpet_cleaning_machine_86t3_vs_rug_doctor.pdfIn PDF document text
    • https://d86ad34a-7df2-4f47-937b-a12ab5abc0fa.filesusr.com/ugd/8cbfce_6c234b1b8ae345daa829b2b4aa776b72.pdf?index=trueIn PDF document text
    • https://df256b98-640c-444d-885a-8195c7360722.filesusr.com/ugd/40b9e6_a48903e21b454df6a4195e4cfcccfc96.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/divilabeb.pdfIn PDF document text
    • http://kalujagemivinid.epizy.com/fuganu.pdfIn PDF document text
    • https://d86ad34a-7df2-4f47-937b-a12ab5abc0fa.filesusr.com/ugd/8cbfce_05573028036c4506b26e2fb2b980951a.pdf?index=trueIn 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_off0000ef00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF00 5636 bytes
SHA-256: ba6b20740df8e15dcfaead5a36e89019ab3849a1dacec81b4c203bafdd4a1212
font_01_sfnt_off0001022d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1022D 11272 bytes
SHA-256: 6d9b54cdfa05a512eeb36325f7f276ca9aa88a5d6011bf625532e82d2475b723