Malicious PDF — malware analysis report

Static analysis result for SHA-256 33d8532cf5af1bf5…

MALICIOUS

PDF

41.3 KB Created: 2020-09-05 14:38:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b75129f84868d161880b3284dcaf434 SHA-1: b3a3e7420f31563c104bb0f539bb65af2e3e5be1 SHA-256: 33d8532cf5af1bf54d3b1b454a0e427224277f7019a9fbe5e49ccce4dd120c2b
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to a URL designed to lure users with a keyword related to blindness. The document body, though partially corrupted, also contains the same malicious URL and other benign-looking PDF links, suggesting a link farm or redirection tactic. The primary intent appears to be directing the user to the malicious ttraff.me domain.

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=types+of+blindness+pdf
    • https://static.usrfiles.com/ugd/3dd68e_8728e6f5a7c948d09e459eeb6795e40c.pdf
    • https://static.usrfiles.com/ugd/7921d2_13cabd78c4b0440da98eb6c95e1ce2ee.pdf
    • https://static.usrfiles.com/ugd/9ea9b6_5444b0e8fca34c65b99cb74b8d9495e9.pdf
    • https://static.usrfiles.com/ugd/efc97f_8c9fac9348b64ae7a3f360cf5afa6981.pdf
    • https://static.usrfiles.com/ugd/a2d007_2016d6db41e94ccfac71d10e0e88dd4f.pdf
    • https://static.usrfiles.com/ugd/09273f_4be5f69173bd4ee797632e1e6a7239fe.pdf
    • https://static.usrfiles.com/ugd/01f9b9_aad0b8956d4b4343a2c7507338fa8e8c.pdf
    • https://static.usrfiles.com/ugd/a2e20a_ba0091138b2b416990d4c67a9fc17200.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/tudisujalabemaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4012/files/excuse_me_in_italian_formal.pdf
    • https://static.usrfiles.com/ugd/b8c837_6183246d100d46d28dc6b95d7a1db236.pdf
    • https://static.usrfiles.com/ugd/b0cd75_9ec81cbdb421488bb4d123eb78cb5598.pdf
    • https://static.usrfiles.com/ugd/d775a9_77d0fa9b575a43979e17ec6fd363e46d.pdf
    • https://static.usrfiles.com/ugd/0bcf16_4e149d811dc24a34b0b614bbc0082c15.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_off00006450.bin
32de85687204f906f696863132ab788b206e616e5f82ff297d7c36c1c25bc282		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6450 4920 bytes
font_01_sfnt_off00007526.bin
400ef1ce173ec204415c2f374d19b50096c8d6021a62cb8f85e8630a7b3a308f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7526 10312 bytes

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