Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebd54f75b6ddf94a…

MALICIOUS

PDF

43.0 KB Created: 2020-08-13 03:04:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 815c895d8fff3c3b9a98d79fa35da4fd SHA-1: 0ac98fde2b7f60c85f9b52dcf29c1c6cf6b6db3f SHA-256: ebd54f75b6ddf94a8c6ad3bc2e4d9c8c04123349700e335ed4c7ec33b1098d3a
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates a PDF redirector link to 'ttraff.com', which is known malicious infrastructure. The document body, though heavily obfuscated, contains the same URL, suggesting the primary intent is to redirect the user to 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=raul+di+blasio+corazon+de+ni%25C3%25B1o+pdf
    • http://files.ordinarymiraclescaninerescue.org/uploads/1/3/0/9/130969659/naxubovizotimen_kazoxavodeg.pdf
    • http://kudidosuk.homegrownfoodbasket.com/uploads/1/3/0/9/130969724/povejubixi_dojer_givitivuj.pdf
    • http://manifaje.benallanoff.com/uploads/1/3/0/9/130969204/1226866.pdf
    • http://files.nxtgenerationenergy.com/uploads/1/3/2/7/132740415/sodegebu.pdf
    • https://cdn.shopify.com/s/files/1/0448/0063/9133/files/aneurisma_de_aorta.pdf
    • https://cdn.shopify.com/s/files/1/0439/1780/3675/files/26398541245.pdf
    • https://cdn.shopify.com/s/files/1/0440/1322/4094/files/guvefejofipazimenopus.pdf
    • https://cdn.shopify.com/s/files/1/0430/1357/0709/files/46827022344.pdf
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/88117815385.pdf
    • https://cdn.shopify.com/s/files/1/0431/9058/3464/files/sedoxuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/1775/6062/files/google_cardboard_vr_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/1555/2674/files/94931378126.pdf
    • https://cdn.shopify.com/s/files/1/0436/5726/5305/files/lovekozarorubujugawado.pdf
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/kujigidavewabofozijeval.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/sabedibuwepukijezadax.pdf
    • https://cdn.shopify.com/s/files/1/0431/9110/7742/files/usar_el_cerebro_gratis.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_off000066f9.bin
84c68168ed2e3ef7e674ae26d70b5cfa102c4ea8eac8fee3ede77e17c6f7a32f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66F9 5556 bytes
font_01_sfnt_off000079a7.bin
44aca0487f57f4eadabaa266d35a654de9222f9b0f4c5e7450d163df084d685f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79A7 10908 bytes

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