Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b52f4d0c373b3e6…

MALICIOUS

PDF

58.6 KB Created: 2020-07-28 19:15:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9757dc43950734ccc064ee5f9bc225a3 SHA-1: bb2981beb170f0cc8712bbdd1ca17707fc90e2f8 SHA-256: 1b52f4d0c373b3e60aa1592c606bf766b7ee7c05a427b527ac029482d6327d0b
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to Shopify-hosted PDFs, suggesting an attempt to manipulate search engine results or distribute content. The presence of a 'download button' heuristic further supports the lure aspect. While no scripts were extracted, the combination of the malicious redirector and link farm indicates a probable phishing or malware distribution attempt.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=eagle+scout+letter+of+congratulations+template
    • http://files.allisonlbaird.com/uploads/1/3/1/1/131164124/6a30fee1f9db.pdf
    • http://files.summasportswear.com/uploads/1/3/1/4/131453807/118d8e22a22790b.pdf
    • http://files.azpretile.com/uploads/1/3/1/4/131408245/vetizoluxuz.pdf
    • http://files.azpretile.com/uploads
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/19925526918.pdf
    • https://cdn.shopify.com/s/files/1/0437/8283/2280/files/xijibunikavirix.pdf
    • https://cdn.shopify.com/s/files/1/0427/7462/6470/files/37747660354.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/wotalipenumipesuwavamima.pdf
    • https://cdn.shopify.com/s/files/1/0437/6985/6158/files/pekufixikipema.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/52018996361.pdf
    • https://cdn.shopify.com/s/files/1/0429/5429/3402/files/88864150559.pdf
    • https://cdn.shopify.com/s/files/1/0428/1804/4063/files/56251452255.pdf
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/dugodekojanafidugozu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6956/3290/files/zulaguj.pdf
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/38974440288.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/garul.pdf
    • https://cdn.shopify.com/s/files/1/0432/7519/0430/files/43971229751.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/zilitudu.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_off0000a42e.bin
8e2c9fd798411d02ba7450dfad30772fc8d837627e784012f272f3c074418a1e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA42E 5176 bytes
font_01_sfnt_off0000b5b2.bin
0e3c9c69e134a9bece65a582589d53536b0e06d98d287fd0e400dd3d2c846103
pdf-font-stream PDF embedded font (sfnt) at offset 0xB5B2 12264 bytes