Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ca654f676f8ed79…

MALICIOUS

PDF

40.8 KB Created: 2020-08-11 06:25:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04f9f9aa2656045bb8781798eac14214 SHA-1: 21bbcbdeb711ec524b830e545fb52f35f897e733 SHA-256: 9ca654f676f8ed79e57d7ff7e9cd244c5153dc8f8af0fa336f946f40ca92652b
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button for a converter tool. The link leads to 'ttraff.cc', which is known malicious infrastructure. The document also contains a large number of external PDF links, many hosted on Shopify, likely part of an SEO link farm to obscure the malicious redirector.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=adobe+acrobat+pdf+to+ms+word+converter
    • http://files.myvintagesuite.com/uploads/1/3/0/8/130815437/sabojewi-levozazugazuxod.pdf
    • http://viruk.fikarisart.com/uploads/1/3/1/1/131164250/povolopuxipen_tovowik_pirifunamexog.pdf
    • http://files.thewholechildmatters.org/uploads/1/3/1/6/131607712/f671cfc23.pdf
    • http://files.elbareview.com/uploads/1/3/1/1/131163561/vexofafujupok-simibilusuvozav-ramugiwiza.pdf
    • http://nezaro.carisbrookepac.ca/uploads/1/3/0/7/130738615/sodagi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5235/1144/files/gowurumezuliwidirofejola.pdf
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/92258989340.pdf
    • https://cdn.shopify.com/s/files/1/0440/5251/2918/files/ramapo_college_luminis.pdf
    • https://cdn.shopify.com/s/files/1/0433/8139/1514/files/50274560430.pdf
    • https://cdn.shopify.com/s/files/1/0435/3182/9412/files/mokalawizekirulava.pdf
    • https://cdn.shopify.com/s/files/1/0434/3480/3352/files/16179450065.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24803542318.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lexopiwalosadatijasaz.pdf
    • https://cdn.shopify.com/s/files/1/0437/6651/3818/files/58728330326.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_off00005e98.bin
279c4324a03f273659a9fadb170985a288e42046370771cbb5a9ffc24e855481		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E98 5548 bytes
font_01_sfnt_off00007173.bin
07769b755739d9febb74d77d24d489384c4b83c08fb2b61a89d00eeca3bf7dc7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7173 10576 bytes

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