Malicious PDF — malware analysis report

Static analysis result for SHA-256 22d3f250ed55d9b4…

MALICIOUS

PDF

36.4 KB Created: 2020-09-02 02:40:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47bae981c53ef9f58431e07498632708 SHA-1: 4b63b51a1731ac99d19b737a683bfa8e24183773 SHA-256: 22d3f250ed55d9b4180ecce8497b4b86973fd003f6bf7f52168bacac1b9b1561
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 links, with one identified as a malicious redirector. The heuristic PDF_SEO_LINK_FARM indicates a mass external PDF link farm, suggesting a tactic to artificially inflate search engine rankings or distribute malicious content. The primary malicious URL identified is https://ttraff.link/pify?keyword=cherry+bomb+nct++ilkpop, which likely serves as a gateway to further malicious activity.

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/pify?keyword=cherry+bomb+nct++ilkpop
    • https://cdn.shopify.com/s/files/1/0431/5889/6802/files/pevamikuzolikase.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/18284067299.pdf
    • https://cdn.shopify.com/s/files/1/0428/8629/9815/files/elapsed_time_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0454/2929/3214/files/futuwib.pdf
    • https://static.usrfiles.com/ugd/2ac701_8326ce7ebd6c4861bbafb2f16a20c765.pdf
    • https://static.usrfiles.com/ugd/07625c_423e87e7963a427bae776dd5bbf9a2d6.pdf
    • https://static.usrfiles.com/ugd/97634b_802c6dd2f5e84a0ab9db10b7f2636c8d.pdf
    • https://static.usrfiles.com/ugd/2f07a1_5c5c87e950ab4d6c894469de8faa091f.pdf
    • https://static.usrfiles.com/ugd/b8c837_b0ad4987847744cd9d878a83d8b35a12.pdf
    • https://static.usrfiles.com/ugd/50c35f_e2a3a322312040da995346d3b66ebfd9.pdf
    • https://static.usrfiles.com/ugd/b8c837_1dca233853b44c6e80c6aa52ceec16bc.pdf
    • https://static.usrfiles.com/ugd/d31907_a0d9cbc14ec341b3a865bcdc9dcbb79c.pdf
    • https://static.usrfiles.com/ugd/b8c837_aadb38ffb99442bab22c92120aec1acd.pdf
    • https://static.usrfiles.com/ugd/b8c837_c1c1b08528504a6386fbecff564c815f.pdf
    • https://static.usrfiles.com/ugd/a76634_aa5ea5b999194c22960df5564041aa7f.pdf
    • https://static.usrfiles.com/ugd/c1c462_74b43d62087247bc8b7211edda9742e5.pdf
    • https://static.usrfiles.com/ugd/61f964_ba94805a057440fda5cc8a06feecfd50.pdf
    • https://static.usrfiles.com/ugd/b8c837_eede28d44e994ed8ba76f8573931113b.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_off000046b2.bin
8c43965aa4cfcb78657929ba1cfb1c5d2a0201b64320398999ed320d464906c5
pdf-font-stream PDF embedded font (sfnt) at offset 0x46B2 3192 bytes
font_01_sfnt_off0000520e.bin
e3a3d27a0956b82b104c22569ac0de75778d06e2cdb3aecebe0bef8ca5e96fda
pdf-font-stream PDF embedded font (sfnt) at offset 0x520E 4996 bytes
font_02_sfnt_off000062e9.bin
00216b903f5cea0332daf96615538018c89790e69b05220910f42198d0db85a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x62E9 9820 bytes