Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d665978eff0b446…

MALICIOUS

PDF

61.6 KB Created: 2020-10-27 04:33:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 49dea65efb71f94f8ceb61d4d13359f5 SHA-1: dee9f23eb01cbb886034d098371052d77a15fbaa SHA-256: 9d665978eff0b446e84c866e50001c8a59997991cc6af0e06928c4849bc4357b
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/strik?keyword=holmes+box+fan+walmart In PDF document text
    • https://vefoxetewezelir.weebly.com/uploads/1/3/1/4/131483279/loxotudo.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/reboba_pujipalifi_guvoposa_tisadi.pdfIn PDF document text
    • https://vebifejelib.weebly.com/uploads/1/3/0/7/130775119/tudazanumabawag_gevaso.pdfIn PDF document text
    • https://wifajeru.weebly.com/uploads/1/3/4/3/134342489/noruzano.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/architecture_of_typical_data_mining_system.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/poloxifixazujami.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/endoproteza_stawu_kolanowego_rehabilitacja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28edf921-1e48-4349-b738-3368acfab90b/actiontec_mi424wr_firmware_update_frontier.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9c9c097-eb86-4535-842b-4e4f769e283d/phase_a_l_origine_signal_sinusoidal.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/vozexejabozefowaxeledorax.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/73979353798.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/kuwujixutizojizup.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/jalajozifezonosuk.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/basic_accounting_concepts_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e08b54d8-d5da-4c13-874a-0bb1b53a62c7/85555250283.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68b4f952-c15d-47b3-815b-0a14973654b6/womirepetudiku.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA064 3016 bytes
SHA-256: 07efd4b5ce35fe43d562a47bea6ca2be7e52a32f6dbf0d49a2a72276c44a66d1
font_01_sfnt_off0000ab1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB1F 5172 bytes
SHA-256: 0282f51512273b19812876fb1e83bf90a1674bf8635be2107545a013202c9df0
font_02_sfnt_off0000bcb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCB4 14628 bytes
SHA-256: ceb037529d1a7bb1350146446a243995fbe991550221f629ea415157cea4998f

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