Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e2fb5bd156c06ed…

MALICIOUS

PDF

41.0 KB Created: 2020-08-18 19:18:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f726302779f8723fa4f1d68529f27d9c SHA-1: f8c0e8854ea251418f46e2943ddcf75a184ba90d SHA-256: 1e2fb5bd156c06ed780602767fb1dfa4bea514b650ad4038cece89c51208b037
128 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.ru/pify?keyword=printable+grammar+worksheets+for+grade+5', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this same URL and appears to be a lure for educational materials, likely to trick users into clicking the malicious link.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=printable+grammar+worksheets+for+grade+5
    • http://files.mediatepdx.com/uploads/1/3/0/7/130776655/9243475.pdf
    • https://cdn.shopify.com/s/files/1/0449/7784/8488/files/bank_accounting_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0694/files/16246332285.pdf
    • https://cdn.shopify.com/s/files/1/0432/5238/3902/files/72070299861.pdf
    • https://cdn.shopify.com/s/files/1/0430/2998/7489/files/basic_architectural_drawing.pdf
    • https://cdn.shopify.com/s/files/1/0431/4365/9677/files/49869597764.pdf
    • https://cdn.shopify.com/s/files/1/0430/0292/1123/files/grade_1_english_worksheets_printable.pdf
    • https://cdn.shopify.com/s/files/1/0434/0921/1557/files/30355816770.pdf
    • https://cdn.shopify.com/s/files/1/0434/3182/1473/files/dukomuxadejudavuziju.pdf
    • https://cdn.shopify.com/s/files/1/0436/1709/1744/files/65778126484.pdf
    • https://cdn.shopify.com/s/files/1/0432/9524/4452/files/96649354679.pdf
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/67056282884.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_off00005cbf.bin
d8cc70bd23223041be6a7b3d56f52bcdd15cb8ee6e9ad936b089792a19104771		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CBF 5740 bytes
font_01_sfnt_off00007031.bin
12234169ec0906911a6af089b7eab0cb0f8755326589ae8c750b1e311bc44b67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7031 11648 bytes

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