Malicious PDF — malware analysis report

Static analysis result for SHA-256 82281197834cd176…

MALICIOUS

PDF

67.2 KB Created: 2020-09-01 00:43:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bc2ac7a6b1794b0d6f6460e1e190a5c SHA-1: 1098cff7d8a170e3b8b40f2160ff618c3dbbb107 SHA-256: 82281197834cd17643d12079f69f228c917e4ce1e2a4e7342cb0c4676e1bc605
160 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=lowercase+css+text-+transform'. Additionally, it exhibits a 'SE_BROWSER_INSTALL_LURE' heuristic, indicating the document's text likely prompts the user to install a browser extension or update. This combination suggests a social engineering attack aimed at tricking users into visiting a malicious URL under the guise of needing an update, potentially leading to malware installation or credential theft.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/wix?keyword=lowercase+css+text-+transform
    • https://static.usrfiles.com/ugd/a2d007_e554d5faa8c24fbeb7a0ab3acac3536f.pdf
    • https://static.usrfiles.com/ugd/c1de29_1c6e105f9b174e0e9c26da4fcf394f67.pdf
    • https://static.usrfiles.com/ugd/b58d21_3a9bf555be7045e4a86a8bfbba9ddeb8.pdf
    • https://static.usrfiles.com/ugd/b8c837_611ab0e9ed0f4056b6505d083582c493.pdf
    • https://static.usrfiles.com/ugd/e42ee3_554ccb0d5fd645b9ad89f4066031a824.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/acoustic_guitar_scales_tabs.pdf
    • https://cdn.shopify.com/s/files/1/0438/0377/1041/files/94722492503.pdf
    • https://cdn.shopify.com/s/files/1/0435/1482/2811/files/jobemadomeregefaxama.pdf
    • https://cdn.shopify.com/s/files/1/0435/5430/8245/files/department_of_transportation_form_hs_7.pdf
    • https://cdn.shopify.com/s/files/1/0440/8056/2326/files/dudutowetodisuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9588/files/tanda_dan_gejala_abortus_imminens_pd.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e03.bin
ec7f28c7062bb1d97bd88ff9d20c6870c4154e86cad04cf55a231a5e372fc0b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E03 9508 bytes
font_01_sfnt_off00009d52.bin
b1501e5753fa2e121f3aaea93ffddc41dad4f00c46ca5707871225936a87289e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D52 5128 bytes
font_02_sfnt_off0000aec7.bin
3b7355815ae7abd230565a57ed8143757be6e7446cd99953b281f4f784c0711c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEC7 4136 bytes
font_03_sfnt_off0000be8d.bin
09819c7e15312f56ba23cdd30694f952520af5f055105cf3d4cc3e5ecf448ced		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE8D 18864 bytes
font_04_sfnt_off0000f7de.bin
30155f06aedfb79de9f70f3e8e1372addaeb1c7fe56136300e854ed0c3fac0c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7DE 1740 bytes

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