Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0dac7217b3de6a6…

MALICIOUS

PDF

38.4 KB Created: 2020-09-01 18:04:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06005df109b1bc102a077f9b30f1ae99 SHA-1: d644eb75c585c8f77e284e873463cdad3f55cd9b SHA-256: e0dac7217b3de6a69ec310108eb7c1976eeedadb70edb105ff88803b3a76daf8
150 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary malicious URL being 'https://ttraff.cc/pify?keyword=variance+of+uniform+distribution+matlab'. The document body itself is heavily obfuscated and contains embedded URLs, reinforcing the malicious intent.

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.cc/pify?keyword=variance+of+uniform+distribution+matlab
    • https://cdn.shopify.com/s/files/1/0430/5348/2138/files/blackhawks_2020_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0428/3029/9292/files/putavokawedadagumoxefu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/79135537960.pdf
    • https://cdn.shopify.com/s/files/1/0433/6451/6005/files/cogito_ergo_sum.pdf
    • https://cdn.shopify.com/s/files/1/0440/8098/8325/files/87158063813.pdf
    • https://cdn.shopify.com/s/files/1/0429/9672/7961/files/declaracion_jurada_de_domicilio_para_trabajo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9345/files/temujubekasumejibobad.pdf
    • https://cdn.shopify.com/s/files/1/0428/6427/9718/files/parabody_home_gyms.pdf
    • https://cdn.shopify.com/s/files/1/0432/0827/8171/files/boliluvegivonurovo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7829/5450/files/78030994032.pdf
    • https://cdn.shopify.com/s/files/1/0431/7986/8324/files/20603309679.pdf
    • https://cdn.shopify.com/s/files/1/0435/7731/1391/files/saziwepagow.pdf
    • https://cdn.shopify.com/s/files/1/0435/1731/3176/files/mafegabubizizawano.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_off00005824.bin
e515b0c49adeed5fceb31675c92aeac168da938324a2fbaa559f15fad5bc3caf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5824 5272 bytes
font_01_sfnt_off00006a00.bin
88f29db33cde823e5b6ea6f53c37e28f1f8df635c34d7d0999e0fd0a0c580fb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A00 10184 bytes

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