Malicious PDF — malware analysis report

Static analysis result for SHA-256 512f5714e2478ca7…

MALICIOUS

PDF

47.9 KB Created: 2020-09-17 06:13:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0110f22a6b6a8cdce0c55d6d750085a3 SHA-1: febbf1aad536ca7f5726204788cdd923defb9c8a SHA-256: 512f5714e2478ca776deddd4a055b4895d91075cd5bfe4194b00eec0e5dd9c65
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. This suggests the document is designed to lure users to malicious sites. The presence of a link farm further supports this, indicating an attempt to broaden the reach of the malicious infrastructure. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=the+fountain+of+fair+fortune+dumbledore+role
    • https://dbc1dab4-cac0-427f-9738-0ca8935e0624.filesusr.com/ugd/f967ac_2019dc7acafe48ac8434cd738a002d61.pdf?index=true
    • https://7039eee4-1b51-4f18-8760-2eb53097d073.filesusr.com/ugd/7ef0dc_aa9a79b17e9b4ddcb4a982c87b35ccff.pdf?index=true
    • https://b9c2a991-ea9f-4269-ad46-90fb8909968e.filesusr.com/ugd/f3bfbb_18f7cbbba08e46348da98226ce441d57.pdf?index=true
    • https://4461b739-6b3d-437d-b859-48cab4fd3c8a.filesusr.com/ugd/3ddeef_fbc6e8241e1e463da6a206596f12f42d.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/8548866507.pdf
    • https://cdn.shopify.com/s/files/1/0460/2131/2671/files/christian_coalition_presidential_voter_guide_2020_florida.pdf
    • https://cdn.shopify.com/s/files/1/0434/8208/7576/files/aadhi_bhagavan_tamil_movie_tamilyogi.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/73101448518.pdf
    • https://cdn.shopify.com/s/files/1/0434/1979/5623/files/lodelobikuviram.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_off00007df8.bin
d067729d589245b2f53d949e7b32bc3d68809c2a0322758b9a9c349b8b0baf92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF8 5060 bytes
font_01_sfnt_off00008eff.bin
b1122acfe939aa1f9b0fdbf882c63e931bf1b951cee100dfcb4af3ca894a7f20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EFF 10468 bytes

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