Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfa9193fcde43afd…

MALICIOUS

PDF

45.4 KB Created: 2020-08-31 10:46:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d50f145cfed1e3710e6cf20776918bb SHA-1: 820636525b5c985ba47002eacec6e46faf5e4843 SHA-256: bfa9193fcde43afd39776d1c28335b82684fa936729d015a37fe46189cb3a980
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are hosted on Shopify and appear to be SEO-optimized content. One critical heuristic firing indicates a direct link to a known malicious redirector at `ttraff.ru`. The document body, though heavily obfuscated, contains the same URL, suggesting the primary intent is to redirect the user to malicious infrastructure under the guise of providing a product manual.

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=oster+5711+food+steamer+manual
    • https://cdn.shopify.com/s/files/1/0432/3740/8936/files/38635026991.pdf
    • https://cdn.shopify.com/s/files/1/0437/7988/3170/files/42630016089.pdf
    • https://cdn.shopify.com/s/files/1/0428/3082/3583/files/75596176764.pdf
    • https://cdn.shopify.com/s/files/1/0428/5795/5487/files/american_gangster_movies.pdf
    • https://static.usrfiles.com/ugd/696b8a_97b2a831b313459baa829e1be72ad362.pdf
    • https://static.usrfiles.com/ugd/b8c837_c7603f3b730b4ec0a5627ef94f09ea5f.pdf
    • https://static.usrfiles.com/ugd/9c0842_bcec91b399d447c29ae2fd2baaa178b4.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/jagogeboditetefi.pdf
    • https://cdn.shopify.com/s/files/1/0428/0506/7943/files/60022920036.pdf
    • https://cdn.shopify.com/s/files/1/0434/5420/2013/files/kalabhairava_ashtakam_lyrics_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0429/5540/7511/files/nexozupujazikitapa.pdf
    • https://static.usrfiles.com/ugd/ca9b0a_af5f69708a56429586d2176149b8f5c9.pdf
    • https://static.usrfiles.com/ugd/93971e_255773446c0846aa976dee3102e6d921.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_off000071ee.bin
c2f3f17fecfc256de9484983023b6343726d534ae4644b8ca2ee9b6f9421529b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71EE 5336 bytes
font_01_sfnt_off00008407.bin
0582df2360a53160730d3159299798f1b21dd02074719848498577173015a15a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8407 10520 bytes

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