Malicious PDF — malware analysis report

Static analysis result for SHA-256 32e6fbe775c3bab3…

MALICIOUS

PDF

34.9 KB Created: 2020-08-06 14:28:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88fcd5f14a833969a916f4bcb66c2567 SHA-1: 745411791b0773308d785837703a41cba44a0399 SHA-256: 32e6fbe775c3bab3548f0da6604e3ec8ea026ecb38fc6fcdaf191f2c4344fa73
120 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 'https://ttraff.cc/pify?keyword=statistical+quality+control+el+grant+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL. The primary attack vector appears to be social engineering via a deceptive link within the 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.cc/pify?keyword=statistical+quality+control+el+grant+pdf
    • http://files.findabrick.uk/uploads/1/3/1/3/131383754/golevuxufurovu.pdf
    • http://files.bjswanson.com/uploads/1/3/0/7/130775143/7546646.pdf
    • http://files.newportplaza-tenant.com/uploads/1/3/1/4/131453395/tijufad_wotodetokiburul_wudabatiga.pdf
    • https://cdn.shopify.com/s/files/1/0433/7310/1214/files/favebutixojufunizu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5639/0551/files/59417712916.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/polof.pdf
    • https://cdn.shopify.com/s/files/1/0436/5815/0046/files/65141400873.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rixozuxixewu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9541/7237/files/5932003598.pdf
    • https://cdn.shopify.com/s/files/1/0441/0392/5912/files/gizemulotowulinutoxewiti.pdf
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/zirafebujebabi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/17418425376.pdf
    • https://cdn.shopify.com/s/files/1/0435/1016/9759/files/capm_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0428/9862/0569/files/38161019307.pdf
    • https://cdn.shopify.com/s/files/1/0431/0191/3244/files/79752163143.pdf
    • https://cdn.shopify.com/s/files/1/0433/0523/8688/files/convertir_de_a_word_i_love_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0435/8553/6161/files/vutodava.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_off00004937.bin
c4747734ab16b3bc888eb037b60bc34167f8df9d120baf0e32e44b3332d27efb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4937 5652 bytes
font_01_sfnt_off00005c82.bin
d89678fb3f669c4cae24a681b6f0b4cf8456f8e88cbe33dbd6ba0d7646e2a70f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C82 9956 bytes

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