Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c6f970db05d304a…

MALICIOUS

PDF

41.2 KB Created: 2020-08-15 13:48:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a73087216f4b7597e8e2af13898bbbb SHA-1: 66ece16cc9d8541e5b5001cbffff3265f0723d8d SHA-256: 3c6f970db05d304a070b40302bda3e1d5d025f627acaf99def10bbd8d7cfc6f2
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 of which point to external resources. One critical heuristic identified a link to known malicious redirector infrastructure at https://ttraff.ru/wb?keyword=wallace%20falls%20trail%20map%20pdf. The document body, though heavily obfuscated, contains text related to 'Wallace falls trail map pdf', suggesting a lure to disguise the malicious links. The presence of numerous Shopify-hosted PDF files indicates a link farm designed to distribute 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/wb?keyword=wallace%20falls%20trail%20map%20pdf
    • http://files.atouchofclaas.net/uploads/1/3/0/9/130969389/4917235.pdf
    • http://files.tandesoleilmorrobay.com/uploads/1/3/0/7/130775655/pumagesive.pdf
    • http://tobilaf.thegeeksupreme.com/uploads/1/3/2/6/132682076/9296250.pdf
    • https://cdn.shopify.com/s/files/1/0439/3140/2395/files/gilolotelasutepex.pdf
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/dulog.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7868051279.pdf
    • https://cdn.shopify.com/s/files/1/0437/7464/0286/files/tupeteguguwudowefogupemup.pdf
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/lotaxuxipetufiluwet.pdf
    • https://cdn.shopify.com/s/files/1/0436/1791/0941/files/way_of_the_cobalt_soul_monk.pdf
    • https://cdn.shopify.com/s/files/1/0435/4896/7061/files/cluster_computing_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/1853/4557/files/diseo_descriptivo_correlacional.pdf
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/karerasiduso.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/bobina_de_encendido_automotriz.pdf
    • https://cdn.shopify.com/s/files/1/0435/6875/8943/files/teloxonaramabox.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_off000062c8.bin
7dad471cfcdc1a1ef82c87251b88305f9a23b0169d933f6a5bb5e431437a647b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62C8 5312 bytes
font_01_sfnt_off000074c5.bin
55d53bec061ead258e0b9e39931a2b3c091ab8ec96caf22909b46d7fd025c2d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74C5 10344 bytes

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