Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8d9f20ae32034eb…

MALICIOUS

PDF

33.1 KB Created: 2020-08-21 05:42:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84435b78a356d92a072aeca86a10f3e8 SHA-1: 31815d95b13cc9cdab8b914c2449024a7bbdc5e0 SHA-256: e8d9f20ae32034eb829d463a16b17b72090ca441831e023a2f6b2b1acbb5ebea
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, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=cake+mania+1+free', is designed to lure users to malicious infrastructure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify. The primary malicious URL is the most critical IOC. No scripts were extracted, and the document body is heavily obfuscated, limiting further analysis of its specific intent beyond the malicious link.

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=cake+mania+1+free
    • http://rekiziza.adishsingh.com/uploads/1/3/1/8/131857243/rizuzaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/0669/7367/files/kevuki.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/negonarufefozosaburesid.pdf
    • https://cdn.shopify.com/s/files/1/0462/7211/8946/files/cinema_paradiso_piano_music_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0427/5997/9174/files/21014626462.pdf
    • https://cdn.shopify.com/s/files/1/0435/7698/3713/files/zavibaxudu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8062/0963/files/little_league_baseball_rules.pdf
    • https://cdn.shopify.com/s/files/1/0428/9177/2063/files/ec6009_advanced_computer_architecture_notes_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/8790/4422/files/92803987491.pdf
    • https://cdn.shopify.com/s/files/1/0430/5934/7618/files/kulisukalezuwisukisumixi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/88102269991.pdf
    • https://cdn.shopify.com/s/files/1/0427/9150/1990/files/cp_company_cap_size_guide.pdf
    • https://cdn.shopify.com/s/files/1/0439/4303/5048/files/best_logic_pro_x_templates.pdf
    • https://cdn.shopify.com/s/files/1/0433/0366/5822/files/93478992696.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_off000045e4.bin
722dec1b30436d0a3fdc430916f0eaeb1c6ce2556816f4089ec683dd4bf855b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45E4 4724 bytes
font_01_sfnt_off000055ea.bin
adc71115bdfb94c9d22f4184e168f582e037799df60fc43effcb1b3cca2120cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55EA 9912 bytes

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