Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c42ec168bf465b7…

MALICIOUS

PDF

44.3 KB Created: 2020-08-15 01:46:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f75fe0e718c04c79f0ca6e96af99423 SHA-1: 808981891a1101c2e648884a0ece1c34b0cef79f SHA-256: 8c42ec168bf465b73236d1c6ce3e211d93ca0d27736d3a8fe4ed11984b263eba
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as a kindergarten curriculum guide. This redirector likely leads to a malicious payload or phishing page. The document also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or distribution mechanism. No scripts were extracted, but the PDF structure and embedded links strongly indicate a social engineering attack.

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=kindergarten+curriculum+guide+2017
    • http://files.hazletontrinityschool.com/uploads/1/3/2/3/132303010/88c7835e7e.pdf
    • http://finid.sallykral.com/uploads/1/3/2/3/132303382/7509791.pdf
    • http://files.cozywritersroom.com/uploads/1/3/1/8/131872032/lesiniwutuvefepale.pdf
    • http://reritite.boracaynewcoastph.com/uploads/1/3/0/8/130874493/c060dc86.pdf
    • http://files.stjohnlutheranchurchjenison.org/uploads/1/3/1/4/131456012/menikoxotakibad.pdf
    • https://cdn.shopify.com/s/files/1/0427/9903/8631/files/ritatekukedupiv.pdf
    • https://cdn.shopify.com/s/files/1/0437/7945/7173/files/62953109991.pdf
    • https://cdn.shopify.com/s/files/1/0428/3337/9484/files/11296733512.pdf
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/laketarigos.pdf
    • https://cdn.shopify.com/s/files/1/0431/2776/7206/files/stay_hungry_stay_foolish_full_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/xuwukabefidejas.pdf
    • https://cdn.shopify.com/s/files/1/0428/6673/7311/files/las_carceles_que_elegimos_doris_lessing.pdf
    • https://cdn.shopify.com/s/files/1/0433/7729/5516/files/siwaduje.pdf
    • https://cdn.shopify.com/s/files/1/0452/2953/9485/files/include_bleed_in_indesign.pdf
    • https://cdn.shopify.com/s/files/1/0431/7829/5450/files/41851984417.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006163.bin
3b6c3edccbbdf68622c80e44ac099bd4bffa00507f4f1bc839f0bdbf087aa810		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6163 3080 bytes
font_01_sfnt_off00006c6d.bin
6c073ae6c2c9ad896999a7759afac735823ab38e7105cf50e9da580fd16b5abe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6D 5456 bytes
font_02_sfnt_off00007eea.bin
f06244f0cb789c129d99dd8c5803818a45ad9fa4f32c50976b90f7ae900244cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EEA 10888 bytes

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