Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fc0f76ab1013bdb…

MALICIOUS

PDF

46.4 KB Created: 2020-09-02 02:56:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ceeeee5f0ee944fd41fe13b9e297e58 SHA-1: 3bad89f4b79a5eb6459b4dfcc20a87aa9d5cfa43 SHA-256: 9fc0f76ab1013bdb6fd14b6672f4e13da510fb29d9582272e180d4e526111d28
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to a URL that impersonates a 'Disney animated app'. This suggests a social engineering lure to trick users into clicking the link. The document also contains a mass external PDF link farm, with many links pointing to benign content, but the primary malicious intent appears to be the redirector. No scripts were extracted from this sample.

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.me/wix?keyword=disney+animated+app
    • https://static.usrfiles.com/ugd/de65f7_ade32d78b1ba4203bfba94e77a514687.pdf
    • https://static.usrfiles.com/ugd/04e6f9_bfa6559aff3142fd90cac3902d3fb04c.pdf
    • https://static.usrfiles.com/ugd/b8c837_ed772f1c0c674c6e80a2d0d2cfbef103.pdf
    • https://static.usrfiles.com/ugd/b8c837_c8c41945daba4f0d98e3e43d7d241d30.pdf
    • https://static.usrfiles.com/ugd/804ff6_916879571c604c308ab48bcfb0049dfe.pdf
    • https://cdn.shopify.com/s/files/1/0429/9200/9365/files/49957617344.pdf
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/cover_letter_format_for_university_admission.pdf
    • https://cdn.shopify.com/s/files/1/0433/7719/7221/files/chevrolet_captiva_2020_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/8716/7637/files/c._r._bard_annual_report_2017.pdf
    • https://cdn.shopify.com/s/files/1/0438/0216/5410/files/gojilipum.pdf
    • https://cdn.shopify.com/s/files/1/0464/9127/1320/files/najoni.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/jazugufavolabejabex.pdf
    • https://cdn.shopify.com/s/files/1/0437/0412/3557/files/gastric_bypass_post_op_diet.pdf
    • https://cdn.shopify.com/s/files/1/0429/9869/4042/files/active_passive_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/1668/2663/files/misonexu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fff.bin
7dfa1443bc7ae98a345046bc4eefd689ee0c25467f6bd5fd7cc29c12c17db4f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFF 5080 bytes
font_01_sfnt_off00007141.bin
5d4b573571ff2e1bbed1135d8371238196d5260f83110c99048af5dcdcda75d1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7141 10292 bytes
font_02_sfnt_off000094bc.bin
b190bb2a08d8b0cf464e16ec20c6b26a5b6a61a9187c672dde3042b94f324eb0
pdf-font-stream PDF embedded font (sfnt) at offset 0x94BC 16836 bytes