Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b90ac8fe1f3a684…

MALICIOUS

PDF

48.2 KB Created: 2020-08-22 19:14:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bff20b29cbde7d6da8ffebfd75c61ddb SHA-1: ab8af3fa87a6f79a1ce6fb3f262e9dbb8b034ef7 SHA-256: 3b90ac8fe1f3a684f8642fcad5d88d650ec18e54e4e585449de512628aa53bea
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 link farm. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=pmi+agile+certified+practitioner+pdf', which is likely used to redirect users to a phishing or malware distribution site. The presence of numerous external links, many pointing to Shopify domains but one to 'moredet.upsilonthetatau.org', suggests a coordinated effort to distribute malicious content.

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=pmi+agile+certified+practitioner+pdf
    • http://moredet.upsilonthetatau.org/uploads/1/3/1/3/131384611/7610628.pdf
    • https://cdn.shopify.com/s/files/1/0428/2476/1507/files/axis_bank_forex_card_reload_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/0812/2270/files/19433525756.pdf
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/genetic_algorithm_optimization.pdf
    • https://cdn.shopify.com/s/files/1/0459/1832/2839/files/descriptive_writing_worksheets_middle_school.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/komoxubuwuruwox.pdf
    • https://cdn.shopify.com/s/files/1/0430/5446/5175/files/wafigunesafan.pdf
    • https://cdn.shopify.com/s/files/1/0432/6758/8252/files/ruziregana.pdf
    • https://cdn.shopify.com/s/files/1/0431/6728/5404/files/lebibavoluvofevadodijep.pdf
    • https://cdn.shopify.com/s/files/1/0428/6355/8815/files/tapumekeje.pdf
    • https://cdn.shopify.com/s/files/1/0435/6535/1073/files/68772369923.pdf
    • https://cdn.shopify.com/s/files/1/0434/0491/8941/files/pidakizujifononufuruzi.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_off00006fe1.bin
03f00b8b4bd7abd2e34af032e984ce82fe0857c45be2a6b4524db4873aec4f0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE1 5084 bytes
font_01_sfnt_off00008103.bin
063ef154d03ea2f6ab6a727b64039cf28af2ef8a40854a8d8225e9fd9adcebfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8103 10844 bytes
font_02_sfnt_off0000a5fd.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5FD 4324 bytes

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