Malicious PDF — malware analysis report

Static analysis result for SHA-256 096a3cb43001dd3f…

MALICIOUS

PDF

127.0 KB Created: 2021-03-16 04:50:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 2b5ae1bfc50bc7f97cdd2b76fb1d35c2 SHA-1: 04d9f607d96d0b7853d00c8573b8b663504ca15d SHA-256: 096a3cb43001dd3fb742cdde94ae6e26561e996c1987e9c1fe8aefc5d2359d97
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 an external URI and part of a phishing attempt. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for phishing or to download a second-stage payload.

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://druttle.ru/wix?keyword=fire+pro+wrestling+world+edit+guide PDF link annotation
    • https://cdn.sqhk.co/wazofovam/8Wi9fkb/best_ringtones_free_download_mp3_song.pdfIn PDF document text
    • http://axecheat1.xyz/dujugugewoe5zu.pdfIn PDF document text
    • http://balifruit.com/braggadocio_regular_font_freeq2w29.pdfIn PDF document text
    • https://cdn.sqhk.co/votezevon/d4jeiJ8/87391701922.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379605/normal_6022d214799b4.pdfIn PDF document text
    • https://cdn.sqhk.co/febenapox/yPxHNhg/cyberghost_vpn_app_free.pdfIn PDF document text
    • https://cdn.sqhk.co/levowexesu/BzGichg/fufiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374979/normal_6036f2a9202b4.pdfIn PDF document text
    • http://vevaxogejaz.scienceontheweb.net/41502255115.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://3e206333-d6ff-4be5-a246-6289f7259d3b.filesusr.com/ugd/973a7d_1c25864e6c414194a8fbe77342ee4c5e.pdf?index=trueIn PDF document text
    • http://ligujizulogi.atwebpages.com/sedirejipobemagiri.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/kolifibepewu.pdfIn PDF document text
    • https://s3.amazonaws.com/zubata/lujovuwuv.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/explain_the_difference_between_discipline_and_guidance.pdfIn PDF document text
    • https://ac911ccd-a574-46a9-bbb3-57bb927ff796.filesusr.com/ugd/2735c9_03be41499e6349ec95a6de9ab682e14f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/croydon_building_control_application_forms.pdfIn PDF document text
    • https://cb6d8354-940b-4e05-9f1d-0150973ab277.filesusr.com/ugd/882da0_a3ce2a90c76e499abc80c5e7d4f79ef3.pdf?index=trueIn PDF document text
    • https://044e8d80-c429-4a1f-820d-9b443c65b389.filesusr.com/ugd/53c654_3cbf38c7853740329eb59e6b410fbac8.pdf?index=trueIn PDF document text
    • https://6cf80756-66c2-4d2e-b15d-ff1677cb7115.filesusr.com/ugd/2257e8_025b0b5ab99a489fadd4e76fe39991ef.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a96c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A96C 4848 bytes
SHA-256: f0618c9c1e00c12da88139335b0f31647c753ce74c3c2516ad7e9f89583e63ca
font_01_sfnt_off0001ba04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BA04 11100 bytes
SHA-256: 19f4faebb7cc56aa0ba490094b0ecb428accb866cc13bd2c534310e77774a1c3
font_02_sfnt_off0001dfd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DFD6 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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