Malicious PDF — malware analysis report

Static analysis result for SHA-256 06969470f9fd663f…

MALICIOUS

PDF

80.0 KB Created: 2021-03-25 13:50:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f41dd9853b45114b8a4b010dea993676 SHA-1: b264942e5159af74031db94a3dd4c31b5fa39fb8 SHA-256: 06969470f9fd663fe84a1fe6de37f391e56386c8a7020b43f75fcf892beeccbe
186 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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dugedepap.ru/strik?utm_term=how+to+bluetooth+a+kenwood+radio PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454670/normal_6029fd2a9763a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366305/normal_601d26c274c70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459914/normal_5feeafb551eac.pdfIn PDF document text
    • http://vawabipoxe.sportsontheweb.net/68887000862.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374956/normal_5fef47638d58b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e653615-15e6-433b-ac98-e924f4a515cc/bosch_axxis_dryer_manual_wta4410us.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac911fdb-ed10-4217-9c9e-a6740c3bfd4f/what_are_active_listening_techniques_and_give_three_examples.pdfIn PDF document text
    • http://tebuwawezizafes.onlinewebshop.net/calculo_de_centroides_de_figuras_compuestas.pdfIn PDF document text
    • http://dirazonun.myartsonline.com/amadeus_peter_shaffer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/366aadfc-d789-4015-893a-57328e40ebef/fidefuxipogafemapotiguw.pdfIn PDF document text
    • https://3f7ff619-1e23-491c-a925-ddda4d79b49c.filesusr.com/ugd/79c22a_e9b87c922b7348bab68fb4cb6b786f5c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc40ce28-50a3-4bdc-bc7f-715759e6d5a6/tinojusoludejilagibik.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/jopoxagumapud.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/cessna_206_poh.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8dfdb3f3-209c-4d12-af81-d346cc3e7036/dot_net_interview_questions_and_answers_shivprasad_koirala_free_download.pdfIn PDF document text
    • https://9e6c4f0b-3406-4274-bf8a-5be7f948d240.filesusr.com/ugd/45c6ff_b77ae7c9dd664b4780d61346ecd67b26.pdf?index=trueIn PDF document text
    • https://25f35837-e8ad-4357-b490-8f69bec4165a.filesusr.com/ugd/96c61c_fc056726d9404b1685aced83cd6ceb6d.pdf?index=trueIn PDF document text
    • https://a7193630-a032-4ee2-b136-33837135b76a.filesusr.com/ugd/fac845_73c8fad994c44436918e2e8ea1facd85.pdf?index=trueIn PDF document text
    • https://40fd9d30-e691-4ad4-9ff9-7de67b304886.filesusr.com/ugd/45b27a_bcab401f4ff94ba3b92b8fe61d9a4b11.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/fivuzotodeputuvab.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA3 2900 bytes
SHA-256: 40ce0bc9b113ef031639604f059b60aa9f1e41b097d60e75bfbf620cccc66306
font_01_sfnt_off0000f9e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E7 4992 bytes
SHA-256: b5d8b801b3aa0b8df0bda4ff5c693816df8132add555a19eeccecbfc50497b64
font_02_sfnt_off00010ae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AE1 11624 bytes
SHA-256: 3c168624f683cd0a89c6cbfb5a6316c1079aec8690092f0b3282c7eedf40fbce