Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d2f3c5e755aa70a…

MALICIOUS

PDF

42.7 KB Created: 2020-08-14 17:12:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56026fddd53a17bf1ab11c7a150b2ef7 SHA-1: d12bd1c5bb6919cdedafd8ea896cac3bce9b584a SHA-256: 8d2f3c5e755aa70a006a6547855f51bb0a0a5b44bae79600340850563a6a1072
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=bad+blood+remix+song'. It also exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and other PDF links, suggesting the primary intent is to drive traffic to malicious infrastructure. No scripts were extracted, limiting the analysis of further stages.

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.com/pify?keyword=bad+blood+remix+song
    • http://files.vcs.lglministry.org/uploads/1/3/0/7/130738956/1609742.pdf
    • http://files.flagstaffscies.org/uploads/1/3/0/8/130814208/e2522e7d633c1.pdf
    • http://files.splitdecisionimprovcomedy.com/uploads/1/3/1/4/131437402/jasakesiji.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/badewiwitagozisirili.pdf
    • https://cdn.shopify.com/s/files/1/0434/6124/7129/files/fuwupijaselefuvapajix.pdf
    • https://cdn.shopify.com/s/files/1/0435/6590/8136/files/dapegibugepovutarox.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40035930655.pdf
    • https://cdn.shopify.com/s/files/1/0430/7763/2154/files/zirunaborozok.pdf
    • https://cdn.shopify.com/s/files/1/0430/8202/3061/files/ashrae_fundamentals_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/8583/2096/files/waxutusasagogijenuf.pdf
    • https://cdn.shopify.com/s/files/1/0440/7004/3813/files/27556603755.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/57926664796.pdf
    • https://cdn.shopify.com/s/files/1/0436/3301/6982/files/sowizakipeta.pdf
    • https://cdn.shopify.com/s/files/1/0429/6101/0842/files/71370701250.pdf
    • https://cdn.shopify.com/s/files/1/0435/8628/9832/files/zuperofi.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_off0000696f.bin
588ee7a93abff6b116effcee55fe6231237f786e1de0ed99a40c7804b044fd38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x696F 5400 bytes
font_01_sfnt_off00007bb2.bin
98eedcc4853497fee5c8ab7f3c882898ea4ce800176c4b60dbbda40a11a19b25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB2 10088 bytes

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