Malicious PDF — malware analysis report

Static analysis result for SHA-256 eadf94bb15ab9cd8…

MALICIOUS

PDF

62.1 KB Created: 2020-11-02 11:06:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 23979bfb7d9aba05c4239f580e8fdbdf SHA-1: dc3107dbb2dafce23109fdd0fd3a7ee60754613b SHA-256: eadf94bb15ab9cd808bc89f582b47af4f4704dfc78a2467801a6a73de6abea78
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://gettraff.ru/123?keyword=justice+ginsburg+funeral In PDF document text
    • https://cdn-cms.f-static.net/uploads/4406481/normal_5f93a06ab5125.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378608/normal_5f9dbd9f4edfd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377401/normal_5f9cd0d2f40b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404523/normal_5f9ee4e064190.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413843/normal_5f9f60ae9d207.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/e591a8.pdfIn PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/2de4360ecea.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://uploads.strikinglycdn.com/files/cbaf4241-a084-447c-bcba-e1ed987f8491/lojidugexuwazamobupilemug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/7092/1150/files/jutewelasukagutokumumexal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1884/5860/files/nugakonovel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e12c722-d8dc-4c5e-a12f-73c28a00d954/guide_gear_teepee_tent.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 1

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_off0000a555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA555 4952 bytes
SHA-256: b38a0801e226eb86f77633a10f6c3e4dfd0a7014ca13d6ae492b48383f6c6150
font_01_sfnt_off0000b62f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB62F 11496 bytes
SHA-256: be73ce5eab0a97983c79c78a9e3d3a1f1cc1e6f56a57f6b5a93db55fce3a064c
font_02_sfnt_off0000dd88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD88 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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