Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cb048e14598e866…

MALICIOUS

PDF

68.0 KB Created: 2020-12-16 01:49:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: e464d4271de3d74a92d162dc02a78290 SHA-1: 78b3d0ba4ee9fbe7c9759303c98b16315e593db9 SHA-256: 5cb048e14598e866cb29d66c6d0bba33da0474fb02467dc3d4be9a1bf53dec17
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a known malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and ML_NYX_PDF_MALICIOUS strongly indicate malicious intent. The file likely serves as a lure to direct users to malicious sites, potentially for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://gettraff.ru/123?utm_term=cholula+all+you+can+eat+seats In PDF document text
    • https://noxerurivago.weebly.com/uploads/1/3/4/7/134767941/3e617c275a.pdfIn PDF document text
    • https://xijanejomasug.weebly.com/uploads/1/3/4/5/134506458/guluguwojapaxizovata.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc38b1e9698b02c7f3141e7/t/5fcafdc1b495bd202819349c/1607138753426/pobrecita_traduccion_en_ingles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e466c0a2-0058-475d-b672-83286286b2a8/nebimabupawototubudot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88a97aad-962b-464f-9038-3d007a97e529/fossils_worksheet_year_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aff7558e-80d4-4312-97d5-365e7002b54a/95304716349.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67353fdb-9c27-46e8-b550-1fa26045fb79/93042629608.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe120e5147b14804faa3de/1606291983418/tolejifapogisibu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0b4c68a-147b-41bb-a307-0da02d921cc2/joboputeboxumevo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7dfdf80-5bad-47d1-8c4b-3878fc8c767d/pijupixukojej.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcf3801a633b27d3ae764fe/t/5fd6239ade5b1220c0230a97/1607869340563/nuluwoduximij.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc00a5311f6a4198480ec6e/t/5fc1a18bbc819f1cf4161cf0/1606525326750/saduzi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45eb13e7-4901-4536-8a4e-2f0299b7e965/bissell_powerforce_helix_vacuum_reviews.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5d04840f1034a5cca8d9f/t/5fcddfac9aa2de0c64b61815/1607327661735/cube_defense_orbital_satellite.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_off0000cdd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDD3 4796 bytes
SHA-256: a4c5798df299d231fe59ee2fae7848579846cc8166c54563bfd6a17f483bb9b6
font_01_sfnt_off0000de26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE26 11204 bytes
SHA-256: 87ff48255e96ee8f3dbb43f75edd2abd1aa030ab19694a19258544b44b15f371

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