Malicious PDF — malware analysis report

Static analysis result for SHA-256 87d81f3c94e3e879…

MALICIOUS

PDF

41.7 KB Created: 2020-09-03 12:28:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5facb9573617e76aace8a6718aa64f0b SHA-1: 9e1925b00544cebdaf3ea49a5f654ede870460d9 SHA-256: 87d81f3c94e3e879e19ad1ff7dbaf7bc777e67d5aa6076280ea897adf9ec4e76
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one to a known malicious redirector. The document body, though heavily obfuscated, contains the string 'Information security governance' and a URL that matches the redirector, suggesting a lure to a malicious site. The presence of numerous links, many hosted on Shopify, indicates a link farm designed to attract traffic or distribute malware.

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/wix?keyword=information+security+governance
    • https://cdn.shopify.com/s/files/1/0434/3899/7669/files/siwewupidukowafadixokaza.pdf
    • https://cdn.shopify.com/s/files/1/0435/5316/1367/files/buguzoralerezasilijo.pdf
    • https://cdn.shopify.com/s/files/1/0435/4670/6088/files/70680481721.pdf
    • https://cdn.shopify.com/s/files/1/0429/9993/9235/files/46079120194.pdf
    • https://cdn.shopify.com/s/files/1/0434/1812/4445/files/4509322636.pdf
    • https://cdn.shopify.com/s/files/1/0465/1230/8382/files/brahma_songs_in_naa_songs.pdf
    • https://static.usrfiles.com/ugd/b0cb2d_7f1ac91c3b8e4ba1afa460c1d313fc06.pdf
    • https://static.usrfiles.com/ugd/824332_db7ed0e2bb724442b94c90a99b959b14.pdf
    • https://static.usrfiles.com/ugd/b8c837_ad796a46abf149ef8058e49501923ca8.pdf
    • https://static.usrfiles.com/ugd/682d1c_97ebf55f6eb148dd9c63c580a58b09b6.pdf
    • https://static.usrfiles.com/ugd/a91264_ae1a0158bf914280a0a3f8b956cf713a.pdf
    • https://cdn.shopify.com/s/files/1/0440/8298/7173/files/my_free_annual_credit_report_equifax.pdf
    • https://cdn.shopify.com/s/files/1/0432/3957/1611/files/39418881958.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_off000064a4.bin
6b20fd9435e4fabbf996119c73adf3e8a08e72f20a6fd370d17485eb97f8f067		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64A4 5268 bytes
font_01_sfnt_off00007689.bin
3e780f344514d9dae5827ba6eba6cd4523a1b6488bc4326f512737825dfdfe13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7689 10428 bytes

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