Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca0e1fc5d40b6c42…

MALICIOUS

PDF

43.1 KB Created: 2020-08-11 21:11:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79f19fb096dc8315d9d3d599ae9e0019 SHA-1: c300e0364d4772562dbdaf2c5c3c6607a45f186d SHA-256: ca0e1fc5d40b6c426fcf4ddc79460c96b004ef5e2706f3acde86979a7ed9e4db
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links, https://ttraff.cc/pify?keyword=capital+cities+quiz+questions+and+answers+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other PDF links, suggesting a link farm or redirection scheme designed to lead users to malicious content. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.cc/pify?keyword=capital+cities+quiz+questions+and+answers+pdf
    • http://files.jkrometisdesign.com/uploads/1/3/2/8/132814364/73b7348f.pdf
    • http://files.northeskchurch.org.uk/uploads/1/3/1/0/131070459/wekowaporiwot.pdf
    • http://files.farmtoartfun.com/uploads/1/3/1/8/131856076/a433d08eb70.pdf
    • http://tebabul.paulshishkoffjr.com/uploads/1/3/1/0/131070161/d177f9.pdf
    • http://files.3djoes.com/uploads/1/3/0/9/130969820/bajarikage.pdf
    • https://cdn.shopify.com/s/files/1/0428/8849/5270/files/86280843895.pdf
    • https://cdn.shopify.com/s/files/1/0434/9516/2022/files/48994474940.pdf
    • https://cdn.shopify.com/s/files/1/0435/2281/8212/files/mapa_turistico_cartagena_murcia.pdf
    • https://cdn.shopify.com/s/files/1/0431/5932/2773/files/36143000606.pdf
    • https://cdn.shopify.com/s/files/1/0439/6895/4526/files/brinkmann_electric_smoker_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/9131/9200/files/2020_calendar_printable_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0447/9831/2609/files/22356376272.pdf
    • https://cdn.shopify.com/s/files/1/0432/1555/2672/files/aberdare_mv_cables.pdf
    • https://cdn.shopify.com/s/files/1/0433/9082/8700/files/faruzajixomegaranuf.pdf
    • https://cdn.shopify.com/s/files/1/0434/8346/3832/files/63694966173.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/breakthrough_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/tubaserojizox.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78985131446.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/2795794469.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_off00006a12.bin
9812cd516a3e275ce960d1c8b32f2dc21e7c1c964e99eefa8eee28bcd2cc74c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A12 5324 bytes
font_01_sfnt_off00007c4c.bin
70b64b9403207d4baca554a921c88aa92f461f97707fd4f097cb1e86938d5a4e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C4C 10192 bytes