Malicious PDF — malware analysis report

Static analysis result for SHA-256 e45cf475eea12e92…

MALICIOUS

PDF

45.7 KB Created: 2020-09-02 19:45:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 458d41c80d789fc1b82c48ef52750074 SHA-1: 2ced19eaa5e967d0186fd0d9e22b74ed8ac2ebc5 SHA-256: e45cf475eea12e924847affc6c75c47ae65a3aa5fefe528c6ad2ff2d71460fd2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, many of which point to a link farm hosted on Shopify. One prominent link, 'https://ttraff.com/wix?keyword=chakra+guided+meditation+rasa', is identified as a malicious redirector. The document's structure and content suggest an attempt to disguise malicious activity within a seemingly benign context, likely to lead users to further malicious sites.

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/wix?keyword=chakra+guided+meditation+rasa In 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/1/0430/2723/4969/files/sabatukapamavuxute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3518/1734/files/mizaworogufomusitaxiduru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6312/2843/files/60773318363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5064/8223/files/473071037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6725/1615/files/supply_chain_management_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9393/4748/files/utilitarianism_mill_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7079/9516/files/deped_tambayan_grade_1_teacher_s_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7957/3414/files/28340777689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3575/4650/files/53908876934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4123/2795/files/89243465210.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_b8e4ae36c5374a73b9f1ceb5e9ffd61c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_23aa52622ae04cd6862ec580406df94f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c1de29_38a366fb0a3c489f8e9481000b97081d.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_off000076cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76CC 5176 bytes
SHA-256: e765a27a469b008048a9413c206b7ab9024e35f1295f2714b0fc1e6b8240b99f
font_01_sfnt_off00008836.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8836 9996 bytes
SHA-256: 682c4b002512e8300fa82456978f7fcb3e2e34274dd069412eea61a0a8a23739

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