Malicious PDF — malware analysis report

Static analysis result for SHA-256 bccbdf7d3bd56aca…

MALICIOUS

PDF

71.7 KB Created: 2021-03-12 00:29:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 03bbf99b698b4388b947193ac6a94f23 SHA-1: 34e8322b4c21da7d6d3a2fe5eb32abf2607f8f51 SHA-256: bccbdf7d3bd56acaf90ef283575c28d327b7a2c8ced990c39d09446819ed887d
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://fokemale.ru/award?keyword=pdf+splitter+by+page PDF link annotation
    • http://copyrightsupporthelpcenter.com/tx_nr636_firmware_updateq7o1s.pdfIn PDF document text
    • http://startask.ru/jewomipasgwb4t.pdfIn PDF document text
    • https://cdn.sqhk.co/mibajufaneja/W4NO9id/occupational_therapist_salary_houston_texas.pdfIn PDF document text
    • https://cdn.sqhk.co/gazegarov/bgjnieB/racing_moto_3d.pdfIn PDF document text
    • https://cdn.sqhk.co/miviluwulux/hazAVgd/lesevodofojaxinumoje.pdfIn PDF document text
    • http://wudaxozibutix.sportsontheweb.net/bajopufoz.pdfIn PDF document text
    • http://glawerry.online/63787574887hwwhf.pdfIn PDF document text
    • http://alisabor.design/urban_drug_empire_ranks5a7ru.pdfIn PDF document text
    • https://cdn.sqhk.co/samumosoxivi/hjjbq8Z/cross_stitch_stocking_pattern_kits.pdfIn PDF document text
    • http://winsbig.space/worksheet_er_and_ir_verbs_in_the_imperfect9ezak.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ded05c8b-f0d8-42bc-a64b-daa0b63394ca.filesusr.com/ugd/99afdc_d306379cce7e4f6e9bcfeb478f46d2b6.pdf?index=trueIn PDF document text
    • https://e0220c8c-c322-4c33-af83-7c5b0fe00b66.filesusr.com/ugd/a771bd_49b22b74529b494db2fb187c4085593c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kotidox/resupasowopifemi.pdfIn PDF document text
    • http://sitafefisoju.atwebpages.com/nikon_n80_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/norilagugomemirurojojox.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/57319462960.pdfIn PDF document text
    • https://a8a57b57-a5e9-4b5c-b824-02731ce3a1bd.filesusr.com/ugd/cfa667_34374cbb17234d6999d5140add8366e0.pdf?index=trueIn PDF document text
    • https://3c4962d9-41f7-4f14-8396-dad57cc8de20.filesusr.com/ugd/a2de88_1ea7ba8ec61447a5b3d2f462802282af.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_off0000dc6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC6A 5452 bytes
SHA-256: b6057625b164c57d2c4828e7bd4a24b79696be187128e01ea57a1c54e92b0d3f
font_01_sfnt_off0000ef09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF09 10288 bytes
SHA-256: 0a550b573f537d05de4c53bdb77f3681318bb1fb27830cae81cb4f664869d51d

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