Malicious PDF — malware analysis report

Static analysis result for SHA-256 c94c9b85b9e20e11…

MALICIOUS

PDF

43.4 KB Created: 2020-08-24 23:17:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43fa5601d240458c4da05b1cec108416 SHA-1: 74041c8fb3eee1869946c8dc5b8f6673ddb40383 SHA-256: c94c9b85b9e20e11e298f1ad847add78dd4668834baa14c33dad8244ebfb1aaa
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary malicious redirector URL pointing to 'https://ttraff.com/pify?keyword=bodybuilding+gym+program+pdf'. This indicates a phishing or scam attempt disguised as a legitimate document. The document body, though heavily corrupted, contains fragments suggesting a 'bodybuilding gym program pdf' lure. No scripts were extracted, and the PDF structure itself is the primary vector for redirection.

Heuristics 3

  • 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.
  • 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=bodybuilding+gym+program+pdf
    • http://files.minilivestock.com/uploads/1/3/2/7/132740415/38a223c.pdf
    • https://cdn.shopify.com/s/files/1/0432/8289/0912/files/excel_copy_only_visible_cells.pdf
    • https://cdn.shopify.com/s/files/1/0431/5453/8656/files/80317122912.pdf
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/vawizabezudovenu.pdf
    • https://cdn.shopify.com/s/files/1/0438/4797/5062/files/office_employee_performance_self_evaluation_assessment_templates.pdf
    • https://cdn.shopify.com/s/files/1/0437/6218/8449/files/50907492439.pdf
    • https://cdn.shopify.com/s/files/1/0429/1903/5033/files/32096256737.pdf
    • https://cdn.shopify.com/s/files/1/0427/7462/6470/files/64539844712.pdf
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/58523093725.pdf
    • https://cdn.shopify.com/s/files/1/0432/2181/1364/files/44649872800.pdf
    • https://cdn.shopify.com/s/files/1/0429/9181/2771/files/85899195325.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/vibera.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cba.bin
0f43702007c01c602cb976b12b09d268dae14f56a66934dff5571349906bdb43
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CBA 5476 bytes
font_01_sfnt_off00007f43.bin
473574d1f6c34f2f5694bc4f1e04616d58aea5f8e5f79664e39186507a093a56
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F43 10008 bytes