Malicious PDF — malware analysis report

Static analysis result for SHA-256 791c2238709bff46…

MALICIOUS

PDF

48.5 KB Created: 2020-08-17 06:54:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be396406ebd40dfc4448b8704ce2e4d0 SHA-1: b52f59d7a98503ff38a12c67ec155fbf06094764 SHA-256: 791c2238709bff4610fddcf97dbc98f3589f9e8a99d575ccdbc3aabca38a6d9d
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The presence of numerous other links, many hosted on Shopify, indicates a link farm designed to obscure the malicious destination. The ML classifier strongly supports the malicious nature of this PDF.

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.com/pify?keyword=ccc+online+test+50+question+with+answer
    • http://files.illuminatingideas.org/uploads/1/3/1/4/131452949/38ab081536d657.pdf
    • http://files.caminatasaludable.com/uploads/1/3/2/6/132681928/43f34.pdf
    • http://files.wlimt.org/uploads/1/3/2/6/132682282/6165579.pdf
    • http://wakad.highperformancecoachkelly.com/uploads/1/3/2/6/132681464/paxejeguloratatitu.pdf
    • http://files.fulrath.com/uploads/1/3/1/8/131871642/abe127.pdf
    • https://cdn.shopify.com/s/files/1/0434/3119/8886/files/51875119473.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/28754649362.pdf
    • https://cdn.shopify.com/s/files/1/0436/9989/6475/files/git_sync_branch_with_master.pdf
    • https://cdn.shopify.com/s/files/1/0433/8565/1358/files/xupidafejupivobilugu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0265/8979/files/wixefapovivokuwavelot.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13879903487.pdf
    • https://cdn.shopify.com/s/files/1/0431/3205/9810/files/gowomafewig.pdf
    • https://cdn.shopify.com/s/files/1/0429/6035/5487/files/assertiveness_in_nursing.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74195332560.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_off00007fc5.bin
cf4c56d809f6d54a4a6662c2259b0a2388a390861a67830118959273f2f398dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC5 5276 bytes
font_01_sfnt_off000091bb.bin
df1141882d4c55e561edb86b7f1764c471a86d39a5d353476051ceb57ef22781		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91BB 10384 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.