Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ff1cf07ad981203…

MALICIOUS

PDF

144.6 KB Created: 2020-09-07 20:49:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 4fbf4bf05106f83e3be59e1dca17c443 SHA-1: e01317cf7c2483baa67550bbc3c58215925b0ee7 SHA-256: 7ff1cf07ad98120318024a2fee556448a3f58b561c231115a71c895a668d129b
154 Risk Score

Malware Insights

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

The PDF contains embedded links and text that direct users to a malicious URL, likely as part of a phishing or scam campaign. The ML classifier strongly indicates malicious intent, and the PDF structure suggests it's designed to host a large number of external links, potentially for SEO manipulation or to distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.me/wix?keyword=beauty+and+the+beast+song++musicpleer In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/ceb2e8_7033b3529c644937943c021547f5c837.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/61b8bf_421cf4aa6424442d9f6802cec621107d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_528317447e284e2898b0305cc4846d9f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/516793_4c60fa2bcfe74605999f88eaad1bed6d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/45fd81_5e58703639544700b8acddd982105e6c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_ffb9a4596e70430c8c666932c403267b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e1c37d_14a6f849d5914136aae273c8c0bbef0d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/cac9e4_08539b1c071746ef8262ade30e669718.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0d2908_875bf6fb32644affbf68566b273c600c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/epistar_chip_datasheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/33337792451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2371/8824/files/86368914241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3998/8648/files/jutipuzerevamojojip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0046/1474/files/family_colour_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0128/1701/files/78382527835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4890/2554/files/78240590538.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4632/9750/files/xuraziwi.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001ac07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AC07 13708 bytes
SHA-256: 92c7c0803d673a0c7d7cb2320928bcb92b83986f67e54661a8341218b60d4809
font_01_sfnt_off0001d8fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D8FB 5780 bytes
SHA-256: 84fbebc40e028d801400b99d86890fe7c028c3cd4767383440feb5ffa866d13a
font_02_sfnt_off0001ec77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EC77 2320 bytes
SHA-256: 24f032a3ae0891c7eb36d646e73812ae266573866e4bd5a318dcea0ba0247f72
font_03_sfnt_off0001f6e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F6E6 11016 bytes
SHA-256: 456f8512ad04655c3ab7ad563f6883f92e70337fc524d94f121a4474ca00d8b3
font_04_sfnt_off00021c99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21C99 16120 bytes
SHA-256: 46d9b83afd797048ab251ddfc9ca9a6db44f3280724c231f6a80a061bcc6fc12

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