Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2fd3622ca5bb8f3…

MALICIOUS

PDF

43.1 KB Created: 2020-09-01 05:04:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56704fcbcdeb4b77980077b43ad3a298 SHA-1: 5669a9470acce039046f6cd5f35b0f9028e959fb SHA-256: b2fd3622ca5bb8f36641188a3c5df3e7722feb7e25d3570fed29dc99c7633d01
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.link/wix?keyword=tujuan+kurikulum+pendidikan+islam+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, a PDF link farm heuristic suggests the document is designed to host numerous external links, likely for SEO manipulation or to distribute further malicious content. The document body, though partially corrupted, contains the same redirector URL and a benign-looking PDF title, reinforcing the lure.

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.link/wix?keyword=tujuan+kurikulum+pendidikan+islam+pdf
    • https://cdn.shopify.com/s/files/1/0430/8559/4775/files/sajojipomutuvegudubag.pdf
    • https://cdn.shopify.com/s/files/1/0433/9145/1294/files/50850779582.pdf
    • https://cdn.shopify.com/s/files/1/0433/3476/2654/files/trello_how_to_delete_a_board.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0f6d74d10bc47bdb90ccbb503061549.pdf
    • https://cdn.shopify.com/s/files/1/0437/8935/3117/files/angular_7_format_input_date.pdf
    • https://cdn.shopify.com/s/files/1/0433/7503/4520/files/git_move_tag.pdf
    • https://cdn.shopify.com/s/files/1/0437/9167/9639/files/spoken_english_sentences_for_daily_use.pdf
    • https://cdn.shopify.com/s/files/1/0431/9281/1681/files/too_much_too_many_not_enough_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0454/7464/4120/files/campana_extractora_de_gases.pdf
    • https://static.usrfiles.com/ugd/3e9e83_0c57274910d5463792472bbd7870bcca.pdf
    • https://static.usrfiles.com/ugd/96768c_4bd855d09e2d496ca96060b8e517374b.pdf
    • https://static.usrfiles.com/ugd/405339_aa1030f7280748bdbe7235bcd057123d.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_off00006b40.bin
db80411c8c259ab9bc20c358aba9102d744d08669a11452caf3b29e38bb29f21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B40 5276 bytes
font_01_sfnt_off00007d22.bin
abab34711e442ee6e9067c13c4a200c3a4e61a18e414e8853f5c7d7eb124c9c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D22 10092 bytes

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