Malicious PDF — malware analysis report

Static analysis result for SHA-256 299e85ba32ca17e1…

MALICIOUS

PDF

44.2 KB Created: 2020-08-23 08:55:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f29f4658f3cf7d14c32b1ba2a114b76b SHA-1: 869661f202dd3a2286797dc4c183015fe5bf02d3 SHA-256: 299e85ba32ca17e17260de51d4cdfb7db1a059aa6d934573e9438c2bfe139e9a
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body text, though heavily obfuscated, contains the string 'https://ttraff.cc/pify?keyword=asp.+net+core+2+email+template', indicating a lure to a malicious site. This aligns with a business-email-compromise pattern aiming to redirect users to fraudulent payment or banking information pages.

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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=asp.+net+core+2+email+template
    • http://files.caribbeanwesleyan.org/uploads/1/3/0/8/130814682/dugoda-buwewez-lelosa.pdf
    • http://dodere.vmiengineering.com/uploads/1/3/2/7/132740435/setuvekagek.pdf
    • https://cdn.shopify.com/s/files/1/0433/8342/3126/files/7244353279.pdf
    • https://cdn.shopify.com/s/files/1/0433/9315/5235/files/foliage_report_ny.pdf
    • https://cdn.shopify.com/s/files/1/0464/6889/0782/files/paper_chromatography_of_plant_pigments_lab_report.pdf
    • https://cdn.shopify.com/s/files/1/0436/7027/4201/files/gatadevat.pdf
    • https://cdn.shopify.com/s/files/1/0431/3923/5997/files/92837169539.pdf
    • https://cdn.shopify.com/s/files/1/0431/5044/2660/files/bacteriology_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/2909/3784/files/14093538073.pdf
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/pebagefajelewevin.pdf
    • https://cdn.shopify.com/s/files/1/0430/6364/0213/files/iitc_draw_tools_import.pdf
    • https://cdn.shopify.com/s/files/1/0457/8728/3612/files/fatirezedozawutedo.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6867/files/arcana_domain_5e.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/xukusexigiburumabokuta.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_off000067d3.bin
f4349e99f2acc9d8aa86e55b47a090bd5dd55402bdaa009ff06ad64de0619152		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67D3 5232 bytes
font_01_sfnt_off00007981.bin
deb849ae732272e8056d1f80c2b0b4163be05628c964238803ea39dae4d91d22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7981 13156 bytes

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