Malicious PDF — malware analysis report

Static analysis result for SHA-256 7df9f00fd6b59a10…

MALICIOUS

PDF

45.6 KB Created: 2020-09-01 03:07:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0661515259362b6d9cb98ded0e4dca9b SHA-1: 5b655da6930597b5ee89efe838a1bfc1c478628f SHA-256: 7df9f00fd6b59a107a63deab9ffadbef5e7d75e3c0c6a1fb7584ccdb5cae338e
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large external PDF link farm. The primary malicious URL identified is ttraff.com, which is known for redirecting to malicious content. The document body, though heavily obfuscated, contains this URL and other links hosted on cdn.shopify.com, suggesting a link-farming or redirection-based attack. 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.com/wix?keyword=class+attendance+sheet+meaning
    • https://cdn.shopify.com/s/files/1/0440/8282/3320/files/downton_abbey_123movies.pdf
    • https://cdn.shopify.com/s/files/1/0437/6359/7473/files/quantico_series_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0439/6033/6542/files/61052526547.pdf
    • https://cdn.shopify.com/s/files/1/0431/3805/6354/files/defasop.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3560/files/just_kids_mat_kearny.pdf
    • https://cdn.shopify.com/s/files/1/0435/6482/6773/files/wijafesebogiwusonige.pdf
    • https://cdn.shopify.com/s/files/1/0431/8255/5297/files/serijubedumaxakoxikenazot.pdf
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/92456338542.pdf
    • https://cdn.shopify.com/s/files/1/0430/3159/3113/files/4411095396.pdf
    • https://cdn.shopify.com/s/files/1/0433/2647/2345/files/42480159768.pdf
    • https://static.usrfiles.com/ugd/9e53d4_65c388e780874f5bb48704fa14c16b11.pdf
    • https://static.usrfiles.com/ugd/24853a_fdc0b21ea44544bf8c97fd2a5633a82c.pdf
    • https://static.usrfiles.com/ugd/b8c837_a8679ef925f6435684dc6b9c5758c7d9.pdf
    • https://static.usrfiles.com/ugd/b8c837_729d092be7254e4cacead38842b70740.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068f6.bin
58da0e2b88fd6a851e65729664211c64d9b64d088cfaad114658c3c7d74a5028		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68F6 4956 bytes
font_01_sfnt_off000079a2.bin
18ca853963115e87ce84ced28cdea03ca0f52899b22548f4da5a0d3710a8c455		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79A2 10036 bytes
font_02_sfnt_off00009b86.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B86 4324 bytes

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