Malicious PDF — malware analysis report

Static analysis result for SHA-256 59c5b34e1b97a72e…

MALICIOUS

PDF

43.1 KB Created: 2020-08-05 05:12:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87b66d3f6c0fcd1673c7dae57ea6d523 SHA-1: 456f8769b1470cf017dfa3deb5546fc50e4ce3a1 SHA-256: 59c5b34e1b97a72e0342ae630818b15a463640c8abc477c68bbae85f04cf69aa
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link at https://ttraff.com/pify?keyword=receptive+skills+definition+pdf points to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many of which are to PDFs hosted on Shopify, suggesting a link farm or content stuffing technique to improve search engine ranking or distribute malicious links. No scripts were extracted from this sample.

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=receptive+skills+definition+pdf
    • http://files.goldsheen-sapphires.com/uploads/1/3/1/4/131482878/d2785046256.pdf
    • http://pusedorub.fallinjuryprevention.com/uploads/1/3/0/8/130814921/4737422.pdf
    • http://files.timothyrogersphotography.com/uploads/1/3/1/4/131453982/6dcb01f6806e.pdf
    • http://files.ctmaple.org/uploads/1/3/0/8/130813846/9b54e61ae2.pdf
    • http://files.yukonqueerfilmalliance.com/uploads/1/3/0/7/130775245/risanoduto.pdf
    • https://cdn.shopify.com/s/files/1/0433/0147/0366/files/compare_and_contrast_print_and_broadcast_media.pdf
    • https://cdn.shopify.com/s/files/1/0433/3069/9414/files/walafesefu.pdf
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/71813832058.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jenodilibaxu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8904/4383/files/40248941132.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/34268697854.pdf
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/kesunasomofug.pdf
    • https://cdn.shopify.com/s/files/1/0428/7637/1110/files/87689859030.pdf
    • https://cdn.shopify.com/s/files/1/0438/5108/8032/files/dezerunajoko.pdf
    • https://cdn.shopify.com/s/files/1/0428/5802/1027/files/defuvufenemukoket.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baludugosutagaxoreforodul.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_off00005ee1.bin
1747290d4447eb7a0408745786d35ebf1efec72d046aca850c82c90d1a43162d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE1 4764 bytes
font_01_sfnt_off00006f33.bin
f3890c45dd95740147cfd8e115fd3d2f4bcae36a81b2e18ffdd875ca2ac7d7ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F33 10036 bytes
font_02_sfnt_off0000918c.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x918C 4324 bytes