Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa25bcf7c3571d97…

MALICIOUS

PDF

44.0 KB Created: 2020-08-12 17:58:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43d89b3ec79bea722c39619f7ad99ea8 SHA-1: c06154eacdf3384a60f120069c95153f51b8da64 SHA-256: fa25bcf7c3571d978669dac45fa51527f9bd40d294ff1f87beda7b4c7fdfa44d
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, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains this URL and other benign-looking Shopify URLs, suggesting a link farm or redirection tactic. The primary malicious URL is 'https://ttraff.ru/pify?keyword=causes+of+arusha+declaration+of+1967+pdf', which is likely intended to lead the user to a malicious site.

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.ru/pify?keyword=causes+of+arusha+declaration+of+1967+pdf
    • http://gowatanel.dceverestdeca.com/uploads/1/3/0/7/130776525/9cd354194c.pdf
    • http://files.ecparksandrec.com/uploads/1/3/0/7/130739937/zuwataxubewomix_rokurajo.pdf
    • http://lerif.nishati-healer.org/uploads/1/3/2/6/132682883/gabokani_vevodik_tivapifonof.pdf
    • http://files.seatoskyallbritishrally.com/uploads/1/3/0/9/130969146/486625.pdf
    • http://files.victoriawindowwashing.ca/uploads/1/3/0/8/130814329/nozolupik_guromogi_dutume.pdf
    • https://cdn.shopify.com/s/files/1/0429/7929/5385/files/hamstrings_strengthening_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0436/5172/7513/files/online_reservation_form.pdf
    • https://cdn.shopify.com/s/files/1/0432/6195/2155/files/29078544768.pdf
    • https://cdn.shopify.com/s/files/1/0431/9114/0512/files/xbox_one_windows_7_driver.pdf
    • https://cdn.shopify.com/s/files/1/0431/8278/4673/files/days_of_the_week_english_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0441/1670/5432/files/fatudevawajisi.pdf
    • https://cdn.shopify.com/s/files/1/0436/1011/2163/files/funeral_invitation_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/5671/6186/files/24934645698.pdf
    • https://cdn.shopify.com/s/files/1/0436/5480/7717/files/79315781537.pdf
    • https://cdn.shopify.com/s/files/1/0431/1682/2679/files/48321942823.pdf
    • https://cdn.shopify.com/s/files/1/0440/9432/4888/files/88746029941.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/
    • https://cdn.shopify.com/s/files/1/0436/10

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d38.bin
0b2a48803a7bef3976f01dd4d4f2ec8349bbd4d6dc64987ffc4fe59124337be9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D38 5592 bytes
font_01_sfnt_off00008035.bin
a4a3d34b9a6aafe3f90ad889d9ea0b5b8f6ab19685ac561d551401dda951b765
pdf-font-stream PDF embedded font (sfnt) at offset 0x8035 10088 bytes