Malicious PDF — malware analysis report

Static analysis result for SHA-256 856458cf81fd9a07…

MALICIOUS

PDF

57.2 KB Created: 2020-08-08 17:27:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff215e731cf91ea740836d12f13d19d0 SHA-1: 2d59360fb1806b678a4751a60618f56dccf80f7c SHA-256: 856458cf81fd9a07f3fc231060870b0805970155f9f24e508c04713fb53525a0
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The primary malicious URL is https://ttraff.com/pify?keyword=bonbon+cakery+recipes+pdf, which is likely used to redirect the user to a malicious site. The document body contains garbled text but includes the malicious URL, suggesting an attempt to lure the user into clicking the link under the guise of a recipe PDF.

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=bonbon+cakery+recipes+pdf
    • http://files.twolazylittledogs.com/uploads/1/3/1/4/131483029/9cdee27.pdf
    • http://files.africaspectrum.com/uploads/1/3/0/8/130874295/2259724.pdf
    • http://files.cambridgerugcleaning.com/uploads/1/3/0/7/130776536/8770450.pdf
    • http://files.lpdcllc.com/uploads/1/3/0/7/130740318/4201149.pdf
    • https://cdn.shopify.com/s/files/1/0432/0110/1985/files/34585262764.pdf
    • https://cdn.shopify.com/s/files/1/0432/1217/7572/files/jipalutuna.pdf
    • https://cdn.shopify.com/s/files/1/0434/1386/4604/files/how_much_is_mark_knopfler_worth.pdf
    • https://cdn.shopify.com/s/files/1/0437/9879/0301/files/44874894559.pdf
    • https://cdn.shopify.com/s/files/1/0440/9258/8184/files/job_order_costing_system.pdf
    • https://cdn.shopify.com/s/files/1/0436/2888/8227/files/annihilation_vandermeer.pdf
    • https://cdn.shopify.com/s/files/1/0431/9592/4640/files/nelson_mandela_long_walk_to_freedom_class_10.pdf
    • https://cdn.shopify.com/s/files/1/0435/6990/5825/files/rivemenobuwivifiribu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41078692832.pdf
    • https://cdn.shopify.com/s/files/1/0435/4804/9572/files/gcss_army_smart_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4969/files/lidukudejiwu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1801/0274/files/20814597009.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_off000089a7.bin
8d9e096cbb4b9d0b6f0476e5ca1bc4e86f25926d3eaa51da148fca48e8874907
pdf-font-stream PDF embedded font (sfnt) at offset 0x89A7 5180 bytes
font_01_sfnt_off00009b4b.bin
e7c55185320dbd7c6b6aab371ce2548dd5b894d27de98433482205a5fa551141
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B4B 14980 bytes
font_02_sfnt_off0000c9c7.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C7 4324 bytes