Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9617728dcbc6456…

MALICIOUS

PDF

35.5 KB Created: 2020-08-03 02:33:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe531011c25176847c4374dab7505603 SHA-1: a20c6a33fe1d81e0243dd9fc5507c3c4424500c5 SHA-256: f9617728dcbc64565858a43bbb1149f2318ce7ce2343dbba744067fb6730b353
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=melaleuca+catalogue+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to Shopify domains hosting PDF files. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the lure. The primary attack pattern involves redirecting the user to malicious infrastructure.

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=melaleuca+catalogue+pdf
    • http://files.rolweshomes.com/uploads/1/3/1/8/131856257/nabivilemanonori.pdf
    • http://files.illinoisequinefieldservice.com/uploads/1/3/0/8/130814462/megofopojilol_rejafi.pdf
    • http://files.surveygoldsolutions.com/uploads/1/3/0/8/130874523/9e5287f40788.pdf
    • https://cdn.shopify.com/s/files/1/0431/6859/6124/files/51953066303.pdf
    • https://cdn.shopify.com/s/files/1/0430/5387/5357/files/46433711976.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/43016487476.pdf
    • https://cdn.shopify.com/s/files/1/0433/7546/0515/files/20382627934.pdf
    • https://cdn.shopify.com/s/files/1/0434/9201/6280/files/27927371817.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/jezonijixori.pdf
    • https://cdn.shopify.com/s/files/1/0432/1358/6596/files/valivejopovoxojogamefu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/jasivoregevazegirokajaji.pdf
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/firivaduwanadibusewiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/4865/7311/files/jovufezuvu.pdf
    • https://cdn.shopify.com/s/files/1/0427/4946/0636/files/97154798173.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_off00004e08.bin
a105dfe960d8bf3cff0e9518987dc3f2287d004fb48e927da1235d332926fbbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E08 5052 bytes
font_01_sfnt_off00005f5c.bin
80daa4420f9bd9f3c3a4092d058840b53a6a994fb0584caff4eeb6f89f39fcc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5C 9996 bytes

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