Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ce0e8d43a53a722…

MALICIOUS

PDF

61.4 KB Created: 2020-10-25 11:23:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: fd4e5fd90c35f03998504109f9a321c6 SHA-1: 3222551495b9bec8315e1a3ac7c32e6963a77f9a SHA-256: 2ce0e8d43a53a722c82b4cd2a6ef594162fdcebddd269ce2e1f0762aef9cb89b
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/123?keyword=quinto+vangelo+di+tommaso+pdf'. This URL is likely used to lure victims to a malicious site. The PDF also contains a large number of external PDF links, suggesting it is part of a link farm designed for SEO manipulation or to distribute further malicious content.

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://ttraff.cc/123?keyword=quinto+vangelo+di+tommaso+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378410/normal_5f8a275334826.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374954/normal_5f8b34b3b9ecf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372696/normal_5f8927af7f57c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368218/normal_5f8938eb13147.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368751/normal_5f89342cb94df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368221/normal_5f881b2c5b5b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366989/normal_5f8bccf6aec55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377902/normal_5f89f12ff33c0.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/faadcdc5-50f6-4341-af1b-87f46d63e763/zofosoworolota.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f76c43f8-ae41-4f84-aec6-e56fb2e87187/lenixuzuxigunurafobab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbf85af4-9053-488b-83e4-6a6e81d292cc/bubomanukobarinixaveni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1de8c8e9-b695-405c-8b67-ebf694bd3f9c/tugozapowekekoroxemi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36ec33c2-6edf-4ea6-be9b-1ef3c4aa3154/lijavedit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6603/1257/files/horizontal_line_test_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1619/0112/files/cluster_analysis_k_means__spss.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7446/8037/files/2523207303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9048/6469/files/hanging_egg_chair_with_stand.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4339/5483/files/advanced_adolescent_pediatric_gastroenterology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d5ca59e-e04e-40f7-8196-90c0828ca93c/mortise_and_tenon_woodworking_joints.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5eb10331-8095-425e-95fb-0cac684ef487/putirapexadowuluzewalosi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35b7fe54-ca57-449e-abaf-1b58629f5557/24548408686.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_off0000ac45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC45 5384 bytes
SHA-256: aa96f5d41a1e3a177d9325f3ae921be51d38cff9a41d7716a773355e6368e53b
font_01_sfnt_off0000be92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE92 12712 bytes
SHA-256: f7642e97f6ce3ced9694ec7f0b59aac5432d70da94d0566d7c36ea8c48514dec

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