Malicious PDF — malware analysis report

Static analysis result for SHA-256 65f9315c041c4d11…

MALICIOUS

PDF

43.9 KB Created: 2020-09-10 20:31:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8a5256bc71beddf3c3e0e620b0fd05bc SHA-1: 218f954ffe3d7706addb05d49e70242bc0dd1b9c SHA-256: 65f9315c041c4d110f9f6c60ed407cd8f4014a2b8097e83b289e7760b349013e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to Shopify and other file-hosting services, forming a link farm likely for SEO manipulation. One prominent link, 'https://ttraff.ru/wix?keyword=business+plan+powerpoint+format', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a lure to disguise the malicious redirector.

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.ru/wix?keyword=business+plan+powerpoint+format In PDF document text
    • http://xularuzof.clatchetproductionsllc.com/uploads/1/3/0/8/130814338/joxowovosatofaso.pdfIn PDF document text
    • http://files.hkawgbc.com/uploads/1/3/0/7/130776714/a22a5.pdfIn PDF document text
    • http://suzaxoma.savinglivescoalition.org/uploads/1/3/1/3/131398564/f1f789805709fa4.pdfIn PDF document text
    • http://sibuve.danielbenjaminwilliams.com/uploads/1/3/2/7/132741389/luteragobovun.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/1/0432/8400/5032/files/59307879268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8984/4637/files/laxolipaseworo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5491/6006/files/nikigakaxekexukixaleruxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7695/1965/files/john_deere_mt.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/07e02c_e976796e50c740c497e25cf5365aa7f4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f7fbc8_a99b6f66f3bd40f3b4a0cba41e25b99b.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7533/8389/files/67926588730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3747/4466/files/capitalism_socialism_and_communism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5014/7745/files/76350280191.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_off0000625a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625A 5068 bytes
SHA-256: 4a1844b240601623ebad92f27d7ba513408a766067d383ba896ace3c83196d3f
font_01_sfnt_off00007383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7383 9980 bytes
SHA-256: 96730d3ddea7b038f8b6a55f0be2e13b54324d4ca00b8414a57693de892e3b9d
font_02_sfnt_off000095ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95BA 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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