Malicious PDF — malware analysis report

Static analysis result for SHA-256 55399574c8484633…

MALICIOUS

PDF

45.1 KB Created: 2020-09-10 06:13:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44318d324245b9b7098a79619a11bfa0 SHA-1: 2466323b0a47a609662d34c7939ee962110d6a58 SHA-256: 55399574c8484633960aa41f17edb5913e5d7c06fc5e88022d06f65f5ef66e9a
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.link/wix?keyword=jk+master+slave+flip+flop+datasheet', is flagged as a malicious redirector. The document body contains garbled text but includes the same keyword as the redirector URL, suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a potential SEO manipulation or content distribution scheme, possibly to host further malicious payloads or phishing pages.

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=jk+master+slave+flip+flop+datasheet
    • http://files.johnnyomusic.net/uploads/1/3/1/4/131437775/e675ec8.pdf
    • http://files.mswilliamsteachesfourth.com/uploads/1/3/1/0/131069934/jekubokazexabosevox.pdf
    • http://files.burnsplanning.com.au/uploads/1/3/2/6/132695519/pugutuwakidemabovabi.pdf
    • http://files.spotsycofchrist.com/uploads/1/3/1/4/131437074/putosu_jiwalugubevadi.pdf
    • http://files.richmondshiremusicschool.com/uploads/1/3/1/8/131856331/516ac1eea.pdf
    • https://cdn.shopify.com/s/files/1/0434/2707/0119/files/gowenirirogopano.pdf
    • https://cdn.shopify.com/s/files/1/0465/0598/4158/files/24251497621.pdf
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/43924790331.pdf
    • https://cdn.shopify.com/s/files/1/0432/7368/3112/files/2478955753.pdf
    • https://cdn.shopify.com/s/files/1/0429/7952/4759/files/51971049956.pdf
    • https://cdn.shopify.com/s/files/1/0443/0761/1804/files/hp_12c_manual.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_off00006604.bin
af45063a2c4856b69814fefb54f7e3083ebec5a0df8e3c2519f656ae7e87a80d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6604 5392 bytes
font_01_sfnt_off0000783a.bin
71edded00dacfe3da55f807baae19b2d0aca2654c836efc5401c53dd0d433fd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x783A 15256 bytes

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