Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1e1c771556fc528…

MALICIOUS

PDF

68.5 KB Created: 2020-11-01 04:19:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: e1ee924cb44efdfa8d93879fb7506c48 SHA-1: a1f9137ce08a1e6480f94ac9488c4336ac82aaeb SHA-256: c1e1c771556fc52829f8fb4b382a9cad599956f28f1cff6d443999c8706d76cb
162 Risk Score

Malware Insights

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

The PDF file contains a high number of embedded links, many of which point to benign Shopify URLs, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/123?keyword=forge+world+index+pdf+vk', which is flagged as malicious. This suggests the document is part of a link farm or SEO spam campaign designed to drive traffic to malicious sites, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=forge+world+index+pdf+vk In PDF document text
    • https://rizebilawi.weebly.com/uploads/1/3/0/8/130814716/tarafapebod.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/f9007.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2479/6829/files/dental_front_office_training_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9195/8196/files/lay_linear_algebra_3rd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2162/2184/files/how_to_solve_system_of_2_equations_with_3_variables.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43e3e0c4-ecac-44cf-ae33-ae537515ab21/gibopi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/237ced36-3525-410b-bf57-abc9084195e2/61963873287.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13d6ac53-4c0b-4408-acf1-00ba3bffe330/75681779645.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4da07b9-727e-4b0d-9a91-600f26b7f1a1/gutaxadan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17f3eb08-8c06-4cab-99d5-0a54bcbd338d/25549714095.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd5736b8-42fc-4864-b729-f3d1007980f6/zobosi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d00b88d-3c37-43c1-8c62-070885fc6774/kejolivirizepi.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_off0000c15a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC15A 4768 bytes
SHA-256: f66257090bdc6bd19acf60814e4b4cfa27123117925a320cf5c93cbbc82fbe6b
font_01_sfnt_off0000d1b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1B1 10816 bytes
SHA-256: 3f69e22c426599898bc837bf74a4ba6220d9bf659e42433596842e9c58debb74
font_02_sfnt_off0000f6cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6CF 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.