Malicious PDF — malware analysis report

Static analysis result for SHA-256 944810167d2e6478…

MALICIOUS

PDF

49.5 KB Created: 2020-08-30 18:03:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61f12b150d90e60a51fd4ab710da8a34 SHA-1: b0b525d94d500b395212520f40505a4ba42d3f9f SHA-256: 944810167d2e6478a57ae22478ddeb8766e149308a5a5e35583e091494f82b1d
120 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though heavily obfuscated, contains text related to 'Acer aspire e5 laptop reviews', suggesting a lure to entice clicks. The primary IOC is the redirector URL, which is likely the entry point for 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.cc/wix?keyword=acer+aspire+e5+laptop+reviews
    • https://static.usr
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/89283438046.pdf
    • https://cdn.shopify.com/s/files/1/0435/8009/6667/files/33157510134.pdf
    • https://cdn.shopify.com/s/files/1/0463/1511/0565/files/22314951071.pdf
    • https://static.usrfiles.com/ugd/0c268c_1e0582984d4444f8a523b79fbe263530.pdf
    • https://static.usrfiles.com/ugd/784815_3e69dc0ce4e0492a8fb6269e0833609f.pdf
    • https://static.usrfiles.com/ugd/b8c837_3905be4b457444fa9f0e98a4d2f747d2.pdf
    • https://static.usrfiles.com/ugd/36f25b_1bf480f84c9241c4bb3e1ca9cbf63057.pdf
    • https://static.usrfiles.com/ugd/834936_d6b1c1d03b404fe3b85224e4fbabde38.pdf
    • https://static.usrfiles.com/ugd/a4e402_ac140cc419a14fa2bf761a035b1c7252.pdf
    • https://static.usrfiles.com/ugd/b8c837_c92483f654da4abebf15557d295bfa6a.pdf
    • https://static.usrfiles.com/ugd/b8c837_8bca322c6d504ac6905a2c2d4d0bb7d4.pdf
    • https://static.usrfiles.com/ugd/0d002d_27d351d9c494446f88bccee225e3acda.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_off000083d4.bin
64c53a0b6625a411dc28fee444887d4080005c029e088a6d363ae0559d65e4e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83D4 5192 bytes
font_01_sfnt_off0000959a.bin
77cba29c76171b1112b147ca38e6658fc9e03c967f5e0f5b44c05ef29f2e5800		 pdf-font-stream PDF embedded font (sfnt) at offset 0x959A 10440 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.