Malicious PDF — malware analysis report

Static analysis result for SHA-256 86f67e93903e736e…

MALICIOUS

PDF

37.3 KB Created: 2020-08-19 06:49:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e57fc9bf4d35eb68291c000d73f56b75 SHA-1: 0a24228f38cd008c1cb344b064bea9a835d97a4b SHA-256: 86f67e93903e736ef2eedd4a561d287d658cbfa1b0bcd3736aa884c2dda14a42
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a lure related to PayPal account information, directly linking to a redirector URL that is flagged as malicious. The document also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farm abuse. The primary malicious URL is https://ttraff.cc/pify?keyword=paypal+account+number+format, which is designed to redirect users to potentially harmful content.

Heuristics 4

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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=paypal+account+number+format
    • http://files.darcythomasdo.com/uploads/1/3/2/6/132681783/nurekesubepelodaza.pdf
    • http://files.arbutuspta.org/uploads/1/3/1/6/131636843/gejowezonifivoxe.pdf
    • http://files.angipetersonpottery.com/uploads/1/3/0/7/130738507/6567443.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/vijizunewuxurimugarikuma.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/gutukudulitetomosi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8973/files/vovotufixik.pdf
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/64705103124.pdf
    • https://cdn.shopify.com/s/files/1/0433/3495/9259/files/zekeferogimipa.pdf
    • https://cdn.shopify.com/s/files/1/0432/9380/2662/files/amitav_ghosh_the_hungry_tide.pdf
    • https://cdn.shopify.com/s/files/1/0447/8559/8615/files/88516880103.pdf
    • https://cdn.shopify.com/s/files/1/0430/6393/5129/files/the_ants_go_marching_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0434/5013/8784/files/kalista_combo_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/9334/3902/files/powershell_5._0_cheat_sheet.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_off0000540d.bin
49e2fd1ca3c90ba8f6cad86b71e656af779d1339ffe0aaf3117ee23eeb2e7daa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x540D 5224 bytes
font_01_sfnt_off000065bf.bin
c86f1052a5ac3d73f5c99e3a100912e2fdf35af5cd23ef7ff5aba93f633b94a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65BF 10212 bytes

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