Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1fdd44c93a8ee93…

MALICIOUS

PDF

43.6 KB Created: 2020-08-02 19:58:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b570be12ae33068674e42da4816ed558 SHA-1: ba484831d0fff254aab3352d7a7c6fbf424a28e5 SHA-256: c1fdd44c93a8ee9334f4fdb9d7b135a7552a9e81d6b7c733593fa9bfd4a69f93
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting a link farm for SEO poisoning. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used to lure users with keywords like 'samsung top load washer manual'. This indicates a phishing or scam attempt using a deceptive document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=samsung+top+load+washer+manual
    • http://files.rhymedilation.com/uploads/1/3/1/4/131453393/6869495.pdf
    • http://files.allisonscustomcreations.com/uploads/1/3/0/7/130775968/4053350.pdf
    • http://files.oakmeadowsfarmllc.com/uploads/1/3/0/7/130738741/xepofida_fesujanutosome.pdf
    • http://files.mwdesigning.com/uploads/1/3/0/7/130739353/tupuronu_lasilaz_venokipu_nesid.pdf
    • https://cdn.shopify.com/s/files/1/0431/8304/6813/files/fanolijosuzovaza.pdf
    • https://cdn.shopify.com/s/files/1/0431/6489/3345/files/79117043933.pdf
    • https://cdn.shopify.com/s/files/1/0432/9321/2827/files/sitiwixiripamonenejitore.pdf
    • https://cdn.shopify.com/s/files/1/0434/8621/6352/files/60897581616.pdf
    • https://cdn.shopify.com/s/files/1/0432/1440/5793/files/pavibojopaxagesap.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xibirinadinabamagumib.pdf
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/14476708779.pdf
    • https://cdn.shopify.com/s/files/1/0430/2825/0781/files/71989689477.pdf
    • https://cdn.shopify.com/s/files/1/0431/5620/9819/files/rosulizafon.pdf
    • https://cdn.shopify.com/s/files/1/0437/9040/1687/files/97556122765.pdf
    • https://cdn.shopify.com/s/files/1/0429/0471/5427/files/11148035114.pdf
    • https://cdn.shopify.com/s/files/1/0430/8271/1201/files/nizazanadatutibumovojov.pdf
    • https://cdn.shopify.com/s/files/1/0432/3796/5979/files/79207949804.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_off00006b64.bin
babfa01b6c952420bffc7d0a7ec8345693a9ad42e200715536a988bb7d23f4b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B64 5568 bytes
font_01_sfnt_off00007e36.bin
c03651b690db6d982e17f0cb995c4bd95dac9ebf3a9ba2e112a7a55816a796a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E36 10260 bytes

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