Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eea8a76160769b1…

MALICIOUS

PDF

41.5 KB Created: 2020-08-31 07:16:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51e20e7efe238bd3dd0fe46ebadfce69 SHA-1: 98c67e8f1356f32c68c6293a26b40b20e8623a47 SHA-256: 1eea8a76160769b1da214dee8e37478cd92f59804c6766d72406a5c5cb122c40
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting an attempt to manipulate search engine results or distribute malicious content through a link farm. The primary malicious URL identified is https://ttraff.com/wix?keyword=vonnegut+who+am+i+this+time. 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.com/wix?keyword=vonnegut+who+am+i+this+time
    • https://static.usrfiles.com/ugd/b8c837_73f291fefe554f6cb4345bd5383cd736.pdf
    • https://static.usrfiles.com/ugd/fd3290_d89c1484b2f94f739653ec41ffda849c.pdf
    • https://static.usrfiles.com/ugd/739437_1fd1d1e4dfb44052a6ae1fad12db73ff.pdf
    • https://static.usrfiles.com/ugd/8cbfce_a4c2ff4801f544bab5d96ac71569a95a.pdf
    • https://static.usrfiles.com/ugd/f65175_10eeb3fcf50e4b52a3311a80fb716ad2.pdf
    • https://static.usrfiles.com/ugd/a2ebd8_bc10cdb2a4d24bdd80b8e3898f64d5c1.pdf
    • https://static.usrfiles.com/ugd/b8c837_b8aeafbef4f54d0883ca3820e25ac78c.pdf
    • https://cdn.shopify.com/s/files/1/0433/2670/1718/files/58398580535.pdf
    • https://cdn.shopify.com/s/files/1/0432/6129/6790/files/capricho_arabe_free_sheet_music_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0432/3213/3278/files/26847838470.pdf
    • https://cdn.shopify.com/s/files/1/0463/3486/9661/files/dbz_android_16_vs_cell.pdf
    • https://static.usrfiles.com/ugd/b8c837_6be614b22c3548e18788740c7ce0d049.pdf
    • https://static.usrfiles.com/ugd/b8c837_ccdd99dee19742eaaccc7bd74fa3b04f.pdf
    • https://static.usrfiles.com/ugd/b8c837_311d9ff710d54d5ea14d805a016b4f54.pdf
    • https://static.usrfiles.com/ugd/0a593f_c201baf35c854ccd863b3650671bde09.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_off00006527.bin
b1ca476b3366299d6f08e2cb99156a79da287fdbb48c33d93085376e54197f43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6527 5028 bytes
font_01_sfnt_off00007635.bin
803790ab85ba8c1c68f8a33a69c2181b808e5f87e76b4fd38b48693eaed61568		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7635 10352 bytes

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