Malicious PDF — malware analysis report

Static analysis result for SHA-256 326ecff04dcd68a1…

MALICIOUS

PDF

39.0 KB Created: 2020-08-31 15:25:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5e25827c4757573e5efb6cd3a220020 SHA-1: a823d90d110c2599327363a9649315dbc99a96a6 SHA-256: 326ecff04dcd68a191f88ac2f0f78ed85f426c965b5200346e1918e0a46550ab
150 Risk Score

Malware Insights

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

This PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=icky+sticky+bubble+gum+song'. The document body, though heavily obfuscated, also contains this URL and appears to be a lure. The presence of a large number of embedded links, many pointing to Shopify and static.usrfiles.com, suggests a link farm or redirection strategy. The ML classifier also strongly flagged this PDF as malicious.

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=icky+sticky+bubble+gum+song
    • https://cdn.shopify.com/s/files/1/0428/7198/0198/files/69078412220.pdf
    • https://cdn.shopify.com/s/files/1/0429/2182/0313/files/40340141772.pdf
    • https://cdn.shopify.com/s/files/1/0428/5258/1542/files/38207193635.pdf
    • https://static.usrfiles.com/ugd/9dda13_60b82f9ef9374410b0f0b171345869f6.pdf
    • https://static.usrfiles.com/ugd/97368a_6cbbb298d799406bbfb0e111488fef47.pdf
    • https://static.usrfiles.com/ugd/fedf23_2ced3652bde54479a1f586538feee91f.pdf
    • https://static.usrfiles.com/ugd/99afdc_69789529f56f412596742d24692c8967.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_67566868c41e430e84fc4bf0db3029af.pdf
    • https://static.usrfiles.com/ugd/b8c837_73340e03bf734e0db3ff44b49dbedbd9.pdf
    • https://static.usrfiles.com/ugd/544c7e_6ef988cfbc0849d98918412e4176499e.pdf
    • https://static.usrfiles.com/ugd/bb13a2_65a7767c140c4d8db5a8f0eed8db6492.pdf
    • https://static.usrfiles.com/ugd/6f7357_1ab10efd98ea47d48fb522d3b23a4c90.pdf
    • https://static.usrfiles.com/ugd/bb13a2_aa8aa9dfba53435a8e852d56ff577cea.pdf
    • https://static.usrfiles.com/ugd/764aaa_f178ec54100745ff8b9b72ce0101c017.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_off00005beb.bin
2eb9224026754cff6b8627adbe03156109cd55286c2c1e5aeb703bbf32e6dcc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BEB 5056 bytes
font_01_sfnt_off00006d27.bin
3a20c6a5806a0abfef72f2fb448ef6628c4e3084847baea1b8189b3d4c39c47f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D27 10168 bytes

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