Malicious PDF — malware analysis report

Static analysis result for SHA-256 34cf14ec360c01b1…

MALICIOUS

PDF

39.5 KB Created: 2020-09-02 02:41:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00ff04d3a0ee3a3b887a977afe30a403 SHA-1: c02b7f190fccafb7852157809e89f3e8f615668c SHA-256: 34cf14ec360c01b1135450adcf87f664d60f4d189efd62d75b91a52ca989b857
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=convert+pdf+to+word+adobe+reader+dc'. The document body, though heavily obfuscated, also contains this URL and other links, some of which are hosted on Shopify. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic suggests a lure to trick the user into clicking the malicious link. The file is generated by wkhtmltopdf, a tool often used to create PDFs from web content, which aligns with the redirection strategy.

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.cc/wix?keyword=convert+pdf+to+word+adobe+reader+dc
    • https://cdn.shopify.com/s/files/1/0461/7866/4602/files/br30_led_reviews.pdf
    • https://cdn.shopify.com/s/files/1/0431/0115/9585/files/1969_camaro_assembly_manual.pdf
    • https://cdn.shopify.com/s/files/1/0460/3310/9156/files/takezunenoxe.pdf
    • https://cdn.shopify.com/s/files/1/0432/9809/5272/files/gunebazorofumaterawa.pdf
    • https://cdn.shopify.com/s/files/1/0430/7963/1012/files/63550632559.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd0d0913464c447e8d33514485477726.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf5208196d7941bab4c767336e1eadb9.pdf
    • https://static.usrfiles.com/ugd/01bc73_68c98a3db36f475990d171b63b4b0e33.pdf
    • https://cdn.shopify.com/s/files/1/0436/3314/8062/files/python_milliseconds_to_datetime.pdf
    • https://cdn.shopify.com/s/files/1/0436/0667/1517/files/misojinigon.pdf
    • https://cdn.shopify.com/s/files/1/0434/3015/0296/files/multiplying_fractions_worksheets_grade_4.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0138/files/51502857857.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_off00005cc2.bin
e5a35da507a0815c2ea9e4c1cb23e09c158c36c7f8e4ee347a8a054d52f44816		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC2 5136 bytes
font_01_sfnt_off00006e58.bin
10fdcc6dddebee18d4fc32dbfd68db3a0d9a3a8c41979ae6ee9119d47db1d997		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E58 10296 bytes

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