Malicious PDF — malware analysis report

Static analysis result for SHA-256 061db1e96459d5f2…

MALICIOUS

PDF

76.6 KB Created: 2021-04-18 06:05:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 106b2878eeeb5dff22f394e761f68dad SHA-1: ac8183953c8a61b545167454fc92f39c4490de8b SHA-256: 061db1e96459d5f212de28889cecd091b1103f2a9713f8ad14f4e2b94ca171c5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which point to potentially malicious domains, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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.
  • 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://zajinet.ru/strik?utm_term=convert+json+to+datatable+c%2523+example PDF link annotation
    • http://lollipopa.online/what_are_the_advantages_of_reproducing_sexuallyppggl.pdfIn PDF document text
    • https://ragidogatekanex.weebly.com/uploads/1/3/4/3/134388076/d807860ce384.pdfIn PDF document text
    • http://negozio50sconto.info/dc_comics_encyclopediall4a5.pdfIn PDF document text
    • http://smallita.space/blue_jackets_vs_blackhawks_highlightsnzzgr.pdfIn PDF document text
    • https://likifovufuli.weebly.com/uploads/1/3/4/5/134588617/34cadec.pdfIn PDF document text
    • http://beautytopshop.site/download_film_divergent_sub_indo_720p7xvik.pdfIn PDF document text
    • http://sberbank.link/firefox_app_free_for_laptop1u8bb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c4e42e93-254c-4ba8-b495-737f84002742.filesusr.com/ugd/ddb60a_135358f895e9417ab72712ba0e3ac330.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jotizifime/new_england_beer_subscription.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/ludikolewuwu.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/sezidesaseviregemabe.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/fubones.pdfIn PDF document text
    • https://b9e1b105-38e0-4bbf-baad-90de1e2021e1.filesusr.com/ugd/432b07_7757f5b8e5234a1697b465051f46b784.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8f66548-0e6a-43ca-ba4e-365330d509f6/is_premier_protein_good_for_you_during_pregnancy.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/dividing_integers_practice_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/bing_desktop_windows_10_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfdc7a04-cf25-4e89-b9c3-51442d581ceb/baby_jogger_city_mini_gt2_double_stroller_review.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/62572195875.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/budwig_protocol_book.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/masterbuilt_30_in_digital_electric_smoker_cover.pdfIn PDF document text
    • https://46c19374-600d-43be-a5f2-d8bf07c6fddf.filesusr.com/ugd/cc94a4_33e38da13d524c508b43d342e8cd3dcc.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/75d61299-0738-481a-a7ab-59054204497e/voxevoselokawupe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39e3d739-9301-4610-b3f3-94fb25751d11/what_is_intermolecular_force_dipole-dipole_interaction.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_off0000ea02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA02 5116 bytes
SHA-256: 8c961b049cad31f70869f0629fdf66285495b374c32dca9920091fa3b2300824
font_01_sfnt_off0000fb77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB77 11556 bytes
SHA-256: 9854d690a985e417bdc704c7d8dfde86d5d25fb39935fa0cd73d9eaec97ba602

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