Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e975de44832e9d5…

MALICIOUS

PDF

67.4 KB Created: 2020-12-17 03:52:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 24fb6b31d5356c8087be6c6ddbcce1bd SHA-1: 8100f41eeaeb177a7bdfc89e364ec9edae58e849 SHA-256: 1e975de44832e9d5d289d42677e7429ce6a69abe8c4c13d0c35a0a986ca94396
214 Risk Score

Malware Insights

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

This PDF document contains numerous links to external websites, including a known malicious redirector. The document body, though heavily obfuscated, appears to contain text related to a concert, likely serving as a lure. The presence of multiple PDF links suggests a link farm or phishing attempt to direct users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffine.ru/123?utm_term=toledo+zoo+concert+tonight In PDF document text
    • https://xizejaselaz.weebly.com/uploads/1/3/4/3/134357450/juxiro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420939/normal_5fb5ed4421c18.pdfIn PDF document text
    • https://zebatezovas.weebly.com/uploads/1/3/4/6/134618099/xadukimeje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382780/normal_5fc2a2b8a4faf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480149/normal_5fb2af85ded48.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/ecd419b4-e4bb-4aba-a06f-4c92111e88c4/pizifafekuwota.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/766affbc-c60c-4b80-88c1-7e5757934a77/pexubuzonoxotuvudo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffee2f5f-115d-4cb4-9fc5-a289ab82420e/btd_battles_comprehensive_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d858130f-64be-4bc6-9c7a-c64be73c5d95/nerabuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6829d5c1-b12c-41e4-b7c4-71ef872ae70d/44054625752.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e001e4b-de0c-4acb-ab1f-d52596e7ab97/30359842033.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_off0000ceb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB1 4812 bytes
SHA-256: 25ba5e40633741d4f37fe6d902eed19191ecb353381ff0f7a4d15875eb665092
font_01_sfnt_off0000df0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF0F 10112 bytes
SHA-256: 89be91f4dc39aa613b2535e7bdeed7fe565f60c195239eee0d8b72549d85f7f6

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