Malicious PDF — malware analysis report

Static analysis result for SHA-256 d79994ea7d546c06…

MALICIOUS

PDF

47.8 KB Created: 2020-08-10 04:16:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91f62e04077ed08ec48ce4c89895eee0 SHA-1: a37346a9af02c7f91d77627a4103f974ba3a4ce0 SHA-256: d79994ea7d546c067b2ee246f4278a9b45e6a2125cbb35d47d7ccc6deab75181
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=abbyy+pdf+transformer+full+espa%25C3%25B1ol+mega'. The document body also contains this URL and numerous other links to PDF files hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The primary intent appears to be redirecting the user to malicious infrastructure under the guise of providing software.

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=abbyy+pdf+transformer+full+espa%25C3%25B1ol+mega
    • http://files.smiths2ottawa.com/uploads/1/3/1/1/131164153/fofikezet_dazewemepa_nikumalan_baworo.pdf
    • http://files.sos22.ahsc-nm.org/uploads/1/3/1/6/131637889/gubofu.pdf
    • http://files.enchantedmob.com/uploads/1/3/0/9/130969700/2875606.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0945/files/36454340895.pdf
    • https://cdn.shopify.com/s/files/1/0432/5769/2320/files/4873768446.pdf
    • https://cdn.shopify.com/s/files/1/0431/5951/9387/files/senaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/5307/2022/files/fizanuxasi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7576/3353/files/is_mac_os_sierra_still_available.pdf
    • https://cdn.shopify.com/s/files/1/0438/2117/0850/files/87969299058.pdf
    • https://cdn.shopify.com/s/files/1/0428/9334/4924/files/kagogapoledewunulek.pdf
    • https://cdn.shopify.com/s/files/1/0429/0235/6124/files/40603021220.pdf
    • https://cdn.shopify.com/s/files/1/0433/0940/0214/files/livro_o_alcoro_em_portugues.pdf
    • https://cdn.shopify.com/s/files/1/0436/9501/4042/files/mojilitizazi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3789128943.pdf
    • https://cdn.shopify.com/s/files/1/0429/3971/1655/files/jimulefurafarafiwixukixa.pdf
    • https://cdn.shopify.com/s/files/1/0438/4574/6838/files/sugawapelutanonizisupolit.pdf
    • https://cdn.shopify.com/s/files/1/0427/6905/5911/files/99639114832.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_off000071a3.bin
24070fb91df7155c80ce7994a969f727809d0c21b8c863bca056f5b1cac91549		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71A3 5804 bytes
font_01_sfnt_off00008512.bin
16f0224741ba23609de5c5a7868ef564cc7052970255b3322cd40241adee9d33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8512 13664 bytes

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