Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9282a893a21aa61…

MALICIOUS

PDF

42.2 KB Created: 2020-08-20 02:46:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94adffd456aeab192802b1ca6b8afb5a SHA-1: cbf3e7ad8ac82bf81dd96d20a8ffc61f8bc18ccd SHA-256: e9282a893a21aa61e8c519500bf6a99a88f45f88ea7c5d1372601437bc17b6e4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a mass external link farm, with a primary malicious redirector URL pointing to a lure for downloading an application. The document body, though heavily corrupted, contains references to the application and the malicious URL, reinforcing the phishing attempt. The heuristic firings indicate the PDF is designed to redirect users to malicious infrastructure.

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=batman+the+dark+knight+rises+apk+aptoide
    • http://files.messymommiesinthecity.com/uploads/1/3/2/6/132681985/zanozapedezoni.pdf
    • https://cdn.shopify.com/s/files/1/0440/6149/1365/files/html_to_library_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/jagevonetebodekujodoni.pdf
    • https://cdn.shopify.com/s/files/1/0438/4915/4720/files/rogudazuju.pdf
    • https://cdn.shopify.com/s/files/1/0431/0840/1316/files/jquery_font_color.pdf
    • https://cdn.shopify.com/s/files/1/0431/6043/6900/files/81616083601.pdf
    • https://cdn.shopify.com/s/files/1/0427/8213/0332/files/vegezexa.pdf
    • https://cdn.shopify.com/s/files/1/0432/5982/2244/files/36944035361.pdf
    • https://cdn.shopify.com/s/files/1/0439/0138/6920/files/81639068000.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/lipowijudukiveru.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lobusine.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_off00006643.bin
31ed4f0f9b3a8f39f53fae903d353ac5e94ce89ea2a23f1ba8f34ff48b8e1461		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6643 5452 bytes
font_01_sfnt_off0000789a.bin
7aeae1af13ea7e315a9a4f86a6ddeb32705b447673b211ae65a60283453619c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x789A 10452 bytes

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