Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3e894e5ce888d21…

MALICIOUS

PDF

39.7 KB Created: 2020-08-19 04:51:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 830594109ed7349cf7353dc1dbf8e797 SHA-1: d6f58bfbdb06e17d6bbab073994aa56109d6739a SHA-256: c3e894e5ce888d210aa968778b2ab57a4587922c4c6bd8ddd0c7a23fb0f345a3
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination of the malicious payload. The document also contains a large number of links to other PDFs hosted on Shopify, suggesting a link farm or SEO poisoning tactic to increase visibility. No scripts were extracted, but the presence of the malicious redirector and the link farm strongly indicate a phishing or malware distribution attempt.

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=coefficient+of+friction+lab+report+discussion
    • http://files.pbl1983.com/uploads/1/3/2/7/132740620/3161377.pdf
    • http://files.backcourtballers.com/uploads/1/3/1/4/131407164/0c2d66d40.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/voriwatovetizejewadodo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1503/5291/files/kesubujigudotazemosidili.pdf
    • https://cdn.shopify.com/s/files/1/0434/2425/2055/files/tanifekajosa.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/7687754802.pdf
    • https://cdn.shopify.com/s/files/1/0434/7019/2805/files/capitalism_and_slavery_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/5395/6758/files/masameliwiju.pdf
    • https://cdn.shopify.com/s/files/1/0435/8648/6440/files/nopirim.pdf
    • https://cdn.shopify.com/s/files/1/0433/6133/7494/files/37122496185.pdf
    • https://cdn.shopify.com/s/files/1/0431/6807/1836/files/essential_mathematics_for_economics_and_business_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/1034/2559/files/14712756221.pdf
    • https://cdn.shopify.com/s/files/1/0433/3325/5323/files/49050466130.pdf
    • https://cdn.shopify.com/s/files/1/0437/8624/0162/files/sutagawipetofaxa.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_off00005d24.bin
292d25aae1a7b455e2effe14d051433681335af789c79d79c81a7c4d1c7746de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D24 5196 bytes
font_01_sfnt_off00006ecd.bin
770330f7788be429f68ebf0d8f53d5d40b71f2461ac3d67935a5d447f28a3d0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECD 10252 bytes

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