Malicious PDF — malware analysis report

Static analysis result for SHA-256 f823e40d00278490…

MALICIOUS

PDF

61.5 KB Created: 2020-09-18 20:45:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7dd37ca36295fc05cb544611b56bfc5d SHA-1: 36e8bdb48fe53eb3ae2cad191f0fc5fa9c94fa6b SHA-256: f823e40d002784905bd7c8645aca5f83c1d0eafddbf3c084cd4e51353d74b21c
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with one critical link pointing to known malicious redirector infrastructure at 'ttraff.club'. The document body, though heavily obfuscated, appears to contain the same URL. This suggests the primary goal is to redirect the user to a malicious site, likely for phishing or further malware delivery. No scripts were extracted, and the document body's content is not directly readable as a lure.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.club/wix?keyword=canton+central+school+ny+employment
    • http://files.activetwa.org/uploads/1/3/1/4/131438583/ea8bd71.pdf
    • http://files.tanyardcreekranch.com/uploads/1/3/1/4/131453984/gulugubifo.pdf
    • http://files.inneractiondance.com/uploads/1/3/1/8/131858661/9627550.pdf
    • http://files.shockentertainmentinc.com/uploads/1/3/1/8/131871745/239b8dbae0c1.pdf
    • https://forms.sllboces.org/Forms/CommonApplication
    • https://24f5931b-92e9-44d1-8877-b9ccb7e0a962.filesusr.com/ugd/09c3c7_8f002997965b484ba689e9edef2ddca0.pdf?index=true
    • https://685d7a13-cd98-4f1d-b01f-999bdf3dc6a5.filesusr.com/ugd/b4f0c6_ff3e1ea42e60491183f9126b6abdc8f6.pdf?index=true
    • https://402f1ab5-5c8c-41c0-ac27-0d53d993ffb8.filesusr.com/ugd/daca0d_2b53500797dd4660819873f6e64835b6.pdf?index=true
    • https://1696b0bd-e2ed-40f4-acc2-9dadb4e8812a.filesusr.com/ugd/bdc04d_ed9d49fd1fbb4958b2aa13bab578b1ad.pdf?index=true
    • https://0b8184c7-df70-425e-af83-76d5d2ab3a73.filesusr.com/ugd/756799_1995bedf4f08481bb3089a5fe6cf98e2.pdf?index=true
    • https://496735f9-910a-4c18-90bb-8041be36d028.filesusr.com/ugd/c8d394_61ed5357e08a416ab1d708dc1f027dcf.pdf?index=true
    • https://d7fb84c8-6580-4170-b5a7-77855172c022.filesusr.com/ugd/c1108c_d1539fa083e94fae9f016591b569a39e.pdf?index=true
    • https://9e4de096-f7a8-40c2-a63f-d51f03b91a58.filesusr.com/ugd/d6af85_bb1d03f075e14b0cb9742edb10c60a40.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0435/2793/0011/files/80998474297.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/2139421792.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1906/files/managerial_economics_samuelson.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_off0000b223.bin
5b7dcd52dbb1d7b688e5088bc1f2eec1e1836f7760eed02f27fd8a641f10afeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB223 5180 bytes
font_01_sfnt_off0000c396.bin
cdb61aeac5b89faef19536c6261ab58221f178fb3a672db60d98312bfd1defca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC396 10844 bytes

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