Malicious PDF — malware analysis report

Static analysis result for SHA-256 a88d3cf4de93c123…

MALICIOUS

PDF

50.7 KB Created: 2020-08-18 13:59:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49772f189e4e3452d86c5075a8fcdfb2 SHA-1: 782ff039a25dc79012cd3e0cb69e99e28f4197ae SHA-256: a88d3cf4de93c123ce561927a16db8d97143503e2806955cb3795c97c746b679
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the text 'Canna grow guide help', suggesting a lure to attract users to click on the malicious links. The primary malicious link is https://ttraff.ru/pify?keyword=canna+grow+guide+help, which likely serves as a gateway 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.ru/pify?keyword=canna+grow+guide+help
    • http://files.grizzlieslaxclub.com/uploads/1/3/1/4/131407549/6428819.pdf
    • http://balobe.stephanvandertoom.nl/uploads/1/3/0/8/130814328/tilorilenabu.pdf
    • https://cdn.shopify.com/s/files/1/0435/7632/8355/files/xuputod.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/topedukumeveve.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/48008523642.pdf
    • https://cdn.shopify.com/s/files/1/0436/5461/1102/files/56449838299.pdf
    • https://cdn.shopify.com/s/files/1/0430/1773/2259/files/97779274970.pdf
    • https://cdn.shopify.com/s/files/1/0435/1728/0408/files/penonejalav.pdf
    • https://cdn.shopify.com/s/files/1/0427/4946/0636/files/44595732524.pdf
    • https://cdn.shopify.com/s/files/1/0428/6477/1238/files/auction_definition_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/vovesuresodilukaruj.pdf
    • https://cdn.shopify.com/s/files/1/0432/2187/6900/files/20990309431.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_off00008a45.bin
a883cd31fa19f7623b975b19475ed4d6be8dbeff7e87d0592aa7626898eb18ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A45 5040 bytes
font_01_sfnt_off00009b74.bin
ebb0ed4686ae8572dde66a77c95cbce3734dd55323ed1e265577c2030c423921		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B74 10260 bytes

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