Malicious PDF — malware analysis report

Static analysis result for SHA-256 0330c106a48a467b…

MALICIOUS

PDF

45.1 KB Created: 2020-08-12 20:43:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e20c47629dea81efe62b1120e3275b37 SHA-1: 771b247d73513ded216f6aed1d8f7a78dc055d28 SHA-256: 0330c106a48a467bcb011fb8e14a0ceabfa1bc0894a405ca095a7d4db74a75fd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm. One of the primary links, 'https://ttraff.com/pify?keyword=warping+machine+pdf', is flagged as a malicious redirector. This suggests the document's purpose is to redirect users to malicious sites, likely for SEO manipulation or to host 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.com/pify?keyword=warping+machine+pdf
    • http://files.pkfaith.com/uploads/1/3/1/3/131380263/nisusekusaratu.pdf
    • http://xademigu.northtxvolleyball.com/uploads/1/3/1/4/131437987/razulabax.pdf
    • http://files.lovelearnlaughtermontessori.com/uploads/1/3/1/3/131398093/givuwadopemuledo.pdf
    • http://files.canuckdivers.ca/uploads/1/3/2/6/132681647/960f480b18f8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/1907/4712/files/royal_rumble_1999.pdf
    • https://cdn.shopify.com/s/files/1/0429/5720/9753/files/gugofiref.pdf
    • https://cdn.shopify.com/s/files/1/0433/3666/3208/files/18463319864.pdf
    • https://cdn.shopify.com/s/files/1/0430/5181/0969/files/31142333095.pdf
    • https://cdn.shopify.com/s/files/1/0439/5096/4904/files/zetudetomedovadedetip.pdf
    • https://cdn.shopify.com/s/files/1/0427/9071/5548/files/nukoliwixuxele.pdf
    • https://cdn.shopify.com/s/files/1/0428/4638/8380/files/19455163592.pdf
    • https://cdn.shopify.com/s/files/1/0437/0785/9096/files/jquery_load_css.pdf
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/chakrir_dak_potrika_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/2425/9992/files/82354862059.pdf
    • https://cdn.shopify.com/s/files/1/0432/3485/3021/files/furixusodugefex.pdf
    • https://cdn.shopify.com/s/files/1/0438/8916/4440/files/gugoxusijik.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5573/files/puwigazinizesanetosofo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/cezar_roberto_bitencourt_codigo_penal_comentado.pdf
    • https://cdn.shopify.com/s/files/1/0438/3267/2418/files/wawulabodizufulujemedar.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066d1.bin
3671639d4f22ca58a1d27afe7366ff2d55ab4e22d029ee25a9f61e0e7ccd5032		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66D1 5372 bytes
font_01_sfnt_off000078f6.bin
02a24d34e23d7055e2da7948b551b0103d9afc2ec0a7009ed76769dadbfe7cbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78F6 15140 bytes

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