Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c829ded7d7ad6ad…

MALICIOUS

PDF

44.3 KB Created: 2020-09-03 02:10:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7847217e6b4f183333ff18dc74b51882 SHA-1: 322b49524de45c882845e3bb20ad54970b50cae1 SHA-256: 1c829ded7d7ad6ad364d898e8fcff779aaa9db0375a9b7570f764cb54341c1a2
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Wellbutrin xl dosing guidelines' and the URL itself, suggesting a lure to a malicious site. The presence of a malicious redirector link indicates an attempt to lead the user to a harmful destination, likely for phishing or malware distribution.

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.ru/wix?keyword=wellbutrin+xl+dosing+guidelines
    • https://cdn.shopify.com/s/files/1/0433/1008/8360/files/5663567686.pdf
    • https://cdn.shopify.com/s/files/1/0428/6801/5260/files/51987629443.pdf
    • https://cdn.shopify.com/s/files/1/0437/4138/0769/files/sugejow.pdf
    • https://cdn.shopify.com/s/files/1/0439/2294/8251/files/automatic_synchronization_android.pdf
    • https://cdn.shopify.com/s/files/1/0437/3551/5290/files/73546654001.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/fibiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/7120/1695/files/1999297545.pdf
    • https://cdn.shopify.com/s/files/1/0434/0894/9402/files/tukosodik.pdf
    • https://cdn.shopify.com/s/files/1/0434/4286/4294/files/sabarimala_temple_history.pdf
    • https://static.usrfiles.com/ugd/b97cba_1d2212ed3fba443a992f7e56e26b36db.pdf
    • https://static.usrfiles.com/ugd/af0aa9_e6d6c1a9fca04838a182f6ceb28c3ffb.pdf
    • https://cdn.shopify.com/s/files/1/0428/4642/1158/files/34954661816.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lozafawofife.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_off00006efe.bin
ef5af5d06a4dc4907c1a93ff44bad6cffb356ea4298b20b48642497e928843ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFE 5004 bytes
font_01_sfnt_off0000801e.bin
4ba6b5892832f7e0f1f4e40b6de1e3b697c18c923f47a9b5f32c5f51c55ad5c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x801E 10608 bytes

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