Malicious PDF — malware analysis report

Static analysis result for SHA-256 baf0f3194478c470…

MALICIOUS

PDF

61.4 KB Created: 2020-10-16 10:31:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: f5515b9bb5da0456c84de49a6d42c04f SHA-1: 7321af1d230a64ba57c11ebe4c098f89c15d4b03 SHA-256: baf0f3194478c470486a36819fdd1c979a4094f635746b67b67aa9b8db145d78
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to disposable hosting and a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://gettraff.ru/123?keyword=awakening+of+the+rebellion+empire+guide', which is flagged as a malicious redirector. This suggests the primary purpose is to direct users to malicious sites, likely for SEO manipulation or further payload delivery.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=awakening+of+the+rebellion+empire+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367938/normal_5f87c543582f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365589/normal_5f86f4053534e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366055/normal_5f877f601e8ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365646/normal_5f87808f0d324.pdfIn PDF document text
    • https://fagisidide.weebly.com/uploads/1/3/2/6/132682833/8703842.pdfIn PDF document text
    • https://porelananov.weebly.com/uploads/1/3/0/7/130775759/3365925.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/408cbd41f222.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/xojajuv-mitegejitokuxig.pdfIn PDF document text
    • https://jaserasozupog.weebly.com/uploads/1/3/1/4/131454215/gefudigoramoju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369168/normal_5f893cad56ee8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368788/normal_5f88d58099ffd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369502/normal_5f88826f8346e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_5f88881c56225.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368251/normal_5f8764ad44e0c.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/7360136.pdfIn PDF document text
    • https://relogeseji.weebly.com/uploads/1/3/0/7/130739887/8742697.pdfIn PDF document text
    • https://sisaseno.weebly.com/uploads/1/3/0/7/130776680/73a31.pdfIn PDF document text
    • https://xonimitofowe.weebly.com/uploads/1/3/2/6/132682232/5840ac8ed9.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/1813217.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/2372/0602/files/77892646010.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/302cfdbc-0749-499b-b4fc-b06875ed62a2/24788598896.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2690b016-b8aa-4491-ae53-69c366721a43/84711535067.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b8987fc-0482-4ce0-a1ba-f2ef9dbd08dd/48285336239.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_off0000b092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB092 5564 bytes
SHA-256: 0f22ce03e4e3011cd48b5d8992f4aa71dc22166dd44c7df87ff0eab3368a5394
font_01_sfnt_off0000c35e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC35E 10604 bytes
SHA-256: aab5d3436b9fa32a0a66887637d3092e867861503210861316cc339735908c28