Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cb53dcf0cc4c17c…

MALICIOUS

PDF

85.3 KB Created: 2020-09-08 19:40:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 426a7fba2e4154e6bdc339453bc00fd5 SHA-1: e13617c7b145def8a6a06099b074fff8922de736 SHA-256: 2cb53dcf0cc4c17c8bfbf412337792662d4c5c629c29ee3663eb19a2dedd7315
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.ru/wix?keyword=abortion+presentation+pdf', is flagged as a malicious redirector. This suggests the document's primary purpose is to lure users to malicious sites, likely for phishing or to download further malware. The presence of wkhtmltopdf in the metadata indicates it was likely generated programmatically.

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.ru/wix?keyword=abortion+presentation+pdf
    • https://cdn.shopify.com/s/files/1/0436/4173/3273/files/93146563445.pdf
    • https://cdn.shopify.com/s/files/1/0432/3750/7240/files/bjd_new_song.pdf
    • https://cdn.shopify.com/s/files/1/0436/9501/4056/files/jaravubelasezefe.pdf
    • https://static.usrfiles.com/ugd/53cfc7_e9b932a9bb06466ca1d10dc32a4e935d.pdf
    • https://static.usrfiles.com/ugd/48d9a1_beaf1960da744a3d90e4411414d45e36.pdf
    • https://static.usrfiles.com/ugd/d4df0f_66090c7c160b49be921ad19054c7a918.pdf
    • https://static.usrfiles.com/ugd/b8c837_eb7ad4ebf02746cc8174d374af71a4a3.pdf
    • https://cdn.shopify.com/s/files/1/0431/6584/3620/files/pububerinobunirufakag.pdf
    • https://cdn.shopify.com/s/files/1/0434/9480/1568/files/comparing_discounts_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/4142/2492/files/65888454476.pdf
    • https://cdn.shopify.com/s/files/1/0435/2566/9028/files/63223811536.pdf
    • https://cdn.shopify.com/s/files/1/0428/8164/6758/files/fsbo_madison_wi.pdf
    • https://static.usrfiles.com/ugd/0a0016_6f0cd94a5c6a46dcb7dfcd0461375e79.pdf
    • https://static.usrfiles.com/ugd/6c8f37_46beb30723834fbf98d2a8864ffc217b.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_off00011056.bin
33d613a0bce1794dbf83084105514bcde0b7aa6c3ae9e243b3071d9ce58822f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11056 5132 bytes
font_01_sfnt_off000121d3.bin
4fd0770059bfcef562d1fc94c133407754a0e0e845cbc2e84cc474b695cafda4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121D3 11004 bytes

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