Malicious PDF — malware analysis report

Static analysis result for SHA-256 eef878e19bf9d731…

MALICIOUS

PDF

40.0 KB Created: 2020-09-08 01:43:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 474eb9f3dfa93cf8983d437330486f86 SHA-1: cb4a25e2c5c0693e00690cf43fcf07a6c5ded05c SHA-256: eef878e19bf9d73167fbfe4e66a3a0c13bc0db41c3550c60aa61037c7b46c82b
120 Risk Score

Malware Insights

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

The PDF file contains a link disguised as a Windows 10 setup prompt, which redirects to a malicious URL. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this redirection to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic indicates the document is part of a larger link farm, suggesting a broad phishing or malware distribution campaign.

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.club/pify?keyword=windows+10+setup++with+product+key
    • https://static.usrfiles.com/ugd/ac0094_bf88f924f1fa4d6a99b4c54a8ab1895c.pdf
    • https://static.usrfiles.com/ugd/804ff6_916879571c604c308ab48bcfb0049dfe.pdf
    • https://static.usrfiles.com/ugd/594ae5_ca23624b5113445a8526ac8933243d8a.pdf
    • https://static.usrfiles.com/ugd/0a0016_8af49bdb641e489da4bf09e5a98034e7.pdf
    • https://static.usrfiles.com/ugd/493135_5b970125034242378713f824c7aff718.pdf
    • https://cdn.shopify.com/s/files/1/0431/5290/0250/files/rbi_guidelines_foreign_currency_convertible_bonds.pdf
    • https://cdn.shopify.com/s/files/1/0435/4048/0164/files/rujal.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/kafenelexa.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/dinoxe.pdf
    • https://cdn.shopify.com/s/files/1/0457/4612/7004/files/dyson_root_8_cyclone_manual.pdf
    • https://cdn.shopify.com/s/files/1/0452/5981/7117/files/problem_solving_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0438/6163/9318/files/monomial_binomial_trinomial_polynomial_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0457/7129/2838/files/4th_grade_science_worksheets.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_off00005ddf.bin
6da3e043b2878330467d43e3e2f390812ad1d2e9b4906f339b35ea34af90535c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDF 5384 bytes
font_01_sfnt_off0000704f.bin
9bea1f1f59968a1810290cd0925ab7d1efc1bbc3b08a97c43755ed581657a1bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x704F 10232 bytes

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