Malicious PDF — malware analysis report

Static analysis result for SHA-256 beeb5b7c08fcdb16…

MALICIOUS

PDF

37.6 KB Created: 2020-08-30 21:25:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67ebc5ee0134b47480cd42e36f14ca49 SHA-1: aca661b9e7779320d9b98574195187b5d96b0810 SHA-256: beeb5b7c08fcdb1606428fdd08809f3e8c40722b32c3a450c18d36d8cc5aa851
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with at least one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.club/wix?keyword=gun+mayhem+redux+unblocked', which is flagged as a malicious redirector. The presence of a large number of external PDF links, many pointing to 'static.usrfiles.com', suggests a link farm intended to obscure the final destination and potentially spread malicious content.

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.club/wix?keyword=gun+mayhem+redux+unblocked
    • https://static.usrfiles.com/ugd/89363e_9878e064f87f44f29d29988edafe5c00.pdf
    • https://static.usrfiles.com/ugd/b8c837_5e91c8ffad224240b9b6ae6b2fc36491.pdf
    • https://static.usrfiles.com/ugd/b8c837_c19b3e9060094166a77f5fa6be57616d.pdf
    • https://static.usrfiles.com/ugd/ce5d00_6900b50aabd94cdfa1722043d7ee9216.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd8539a7c5b848be8d4ab155ebe52973.pdf
    • https://cdn.shopify.com/s/files/1/0435/5656/9247/files/97870509891.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f3c953a33f848168f00aea00b7fdb5e.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc77888b63c54c609c48469be275e08c.pdf
    • https://cdn.shopify.com/s/files/1/0430/6694/9799/files/kivujaxubitibafawezo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5976/4634/files/metformin_dose_for_weight_reduction.pdf
    • https://cdn.shopify.com/s/files/1/0435/7259/2801/files/foxwing_awning_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/6th_grade_vocabulary_words_and_definitions_worksheets.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_off0000552f.bin
41400fe69b0fc360caca658858d1810750b18fff2bae38badad848e16e664bd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x552F 5404 bytes
font_01_sfnt_off00006764.bin
c527b08916c0ad0d22682f22891f9c86ad64f180f85ad7b54613c63830bc2fd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6764 10128 bytes

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