Malicious PDF — malware analysis report

Static analysis result for SHA-256 24a79e56e3600a81…

MALICIOUS

PDF

73.6 KB Created: 2021-03-06 12:54:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 172af6c476325f2f85f0ac8c789bce5b SHA-1: 5628ab67a9576b11f195980c02288864f364158b SHA-256: 24a79e56e3600a813e969a7236c219b4a79789dac89416af0897a6724c74a1a9
186 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://jumiwimov.ru/award?keyword=easy+vegetarian+indian+snacks PDF link annotation
    • http://sesalle.xyz/camerax_android_java_examplebsfq9.pdfIn PDF document text
    • http://fefikaniki.22web.org/nutrition_information_blt_sandwich.pdfIn PDF document text
    • https://cdn.sqhk.co/tuzevawu/geUCjeh/pikiribolegimibavifinovaw.pdfIn PDF document text
    • http://ejinaya.com/characteristics_of_human_resource_management_information_system7scgf.pdfIn PDF document text
    • http://ourfanz.com/bizerba_gsp_h_service_manuallmmvp.pdfIn PDF document text
    • http://deflecfcvy.best/mizetirajulujasimez6w7zk.pdfIn PDF document text
    • https://cdn.sqhk.co/gitovera/lie7nii/vilusopovigomowisup.pdfIn PDF document text
    • https://cdn.sqhk.co/xozirijor/cjdgjFE/tobusepeful.pdfIn PDF document text
    • http://stat-index-co.com/administrao_pblicaskh7b.pdfIn PDF document text
    • http://vasugixoba.22web.org/java_vm_windows_10_32_bit.pdfIn PDF document text
    • http://letxxnx.org/wapafemodof7io3l.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dijinisefiregot.rf.gd/76826600227.pdfIn PDF document text
    • https://8271b8e8-1520-4b18-8785-2fafc8cd33e6.filesusr.com/ugd/efc97f_022651e20cbe4ecea80bbe9f4bb07acb.pdf?index=trueIn PDF document text
    • https://a84030a7-2e48-4039-807a-383e2b7216cc.filesusr.com/ugd/c5d40f_78bcd204dfb6424ea27852886f85c2c2.pdf?index=trueIn PDF document text
    • http://tagugatukosag.epizy.com/52362141980.pdfIn PDF document text
    • https://e691ad07-92dc-45fa-af10-8929b4045ede.filesusr.com/ugd/87b9a8_8b141ab1889a421495d9fe2a434b635d.pdf?index=trueIn PDF document text
    • https://7a9095e9-4ba3-4ff7-9406-a75d0382ce8a.filesusr.com/ugd/db93e9_8687766f175647288e91c0cc78191914.pdf?index=trueIn PDF document text
    • https://883cd1dc-02d0-4059-8fa2-99201f92b631.filesusr.com/ugd/6166c9_05900a7e24e64a5a8e0b5f6c40a24123.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_off0000e303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE303 5256 bytes
SHA-256: 14fd00324f9a09ff1045fcf426f8c0864af017aa581819030c3041d330e0e449
font_01_sfnt_off0000f50c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF50C 11408 bytes
SHA-256: e23a91b3a53aa6a3878331fb7a3f88a8d74d3cd374926b3d853f3ea820d4543c

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