Malicious PDF — malware analysis report

Static analysis result for SHA-256 80bcb2ac594e7afa…

MALICIOUS

PDF

40.4 KB Created: 2020-08-15 03:21:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e935e9a8e6d5269f43c9634075233f3 SHA-1: 20855acfa01d309c32bee481d0a253442a737cf1 SHA-256: 80bcb2ac594e7afa49288fdb910c55895c133a34bac376a698db7f45adbf1ff9
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL and other Shopify-hosted PDF links, suggesting a link farm designed to obscure the true malicious destination. The primary intent appears to be directing the user to the malicious redirector.

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/wb?keyword=civilinio%20proceso%20teise%202%20tomas%20pdf
    • http://zofenek.tdcwebstercity.com/uploads/1/3/0/8/130873995/eeeba5f.pdf
    • http://files.psusdarts.org/uploads/1/3/2/6/132695416/sefuvozemajigutoxuja.pdf
    • https://cdn.shopify.com/s/files/1/0433/7205/2643/files/medical_waste_disposal_methods.pdf
    • https://cdn.shopify.com/s/files/1/0447/5496/0533/files/74749354812.pdf
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/vudumapokebefe.pdf
    • https://cdn.shopify.com/s/files/1/0430/8926/4794/files/puzunebukunebutiwikekom.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/6650334768.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/gewined.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/31703563342.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/tewapurevame.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2452/files/66787296588.pdf
    • https://cdn.shopify.com/s/files/1/0436/1561/7182/files/slavery_in_west_africa.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_off00005063.bin
0fc866002c372b4dfe4c9890a58513f3e3f32afa43ef6d1e372f95b0bbc5b5b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5063 5400 bytes
font_01_sfnt_off0000629f.bin
cef566c18ba20f9a32c861beae0b7e992032b332090bc8294ff079a1d448abda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x629F 16636 bytes

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