Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a2fe6de4861c7d5…

MALICIOUS

PDF

41.3 KB Created: 2020-08-05 14:54:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4482671717c22690d5f49de1a246b4f0 SHA-1: 7583e8d09cb92a8a188821dfc018d17a3fb5df9e SHA-256: 3a2fe6de4861c7d5565a4c9ab28cf8ea5d1e7b8cd45d4544f05d24b229182bf4
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The document body text, though partially corrupted, includes keywords related to a PDF download, reinforcing the lure. The primary malicious URL is https://ttraff.com/pify?keyword=business+english+pearson+2020+pdf+download, which likely leads to further malicious content.

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=business+english+pearson+2020+pdf+download
    • http://files.arcturusfoundation.com/uploads/1/3/0/7/130775992/0af8217c4.pdf
    • http://files.jamesbrown4judge.com/uploads/1/3/0/8/130814423/dijotomog-detowexijapin-bewipe-visukipe.pdf
    • http://wexesoru.carvtechpc.com/uploads/1/3/2/6/132695384/b71e51.pdf
    • https://cdn.shopify.com/s/files/1/0431/0797/5330/files/36888939564.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48975286879.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/42161715522.pdf
    • https://cdn.shopify.com/s/files/1/0428/5513/7447/files/xutowilefuvitum.pdf
    • https://cdn.shopify.com/s/files/1/0440/7086/2998/files/kobavidiz.pdf
    • https://cdn.shopify.com/s/files/1/0435/5401/3336/files/10956603003.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3949/files/94571393504.pdf
    • https://cdn.shopify.com/s/files/1/0439/0181/2904/files/craigslist_boise_furniture_by_owner.pdf
    • https://cdn.shopify.com/s/files/1/0430/9689/9733/files/14918465361.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pigagijewunafusigiku.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/lolul.pdf
    • https://cdn.shopify.com/s/files/1/0440/5025/1941/files/togovugulidimumivezes.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5079/files/16097976462.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_off00006196.bin
ff648a77e8854af8f46b0804cd870143de17ca29a9cb709dbbe149459c03443a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6196 5720 bytes
font_01_sfnt_off0000751b.bin
b362b367d38dd9b61fdadaf9b4c99cc8a70da8be2065bd06b7300c3ac7c8a405		 pdf-font-stream PDF embedded font (sfnt) at offset 0x751B 10316 bytes

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