Malicious PDF — malware analysis report

Static analysis result for SHA-256 d03d00f176ce253d…

MALICIOUS

PDF

38.7 KB Created: 2020-09-01 17:39:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 648021eb2c2f5f486eb81e61c5f94d4a SHA-1: ae1846d8b8586e9ee1ecbea6d2dd861556ee28a3 SHA-256: d03d00f176ce253de4a19db7fa1a46009454ab83da60891bf065f0ff9e909c96
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=carboxiterapia+para+estrias+pdf'. The document body, though heavily obfuscated, also contains this URL and numerous other links to 'static.usrfiles.com', suggesting a link farm or redirection strategy. The primary intent appears to be directing the user to the malicious redirector.

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.cc/wix?keyword=carboxiterapia+para+estrias+pdf
    • https://static.usrfiles.com/ugd/b8c837_3ae4f811cf4746fdb013b52745dcf53f.pdf
    • https://static.usrfiles.com/ugd/913720_3caab52e28984b9a80cc0531deb4465c.pdf
    • https://static.usrfiles.com/ugd/26938b_3a32efbdcd91495d832907ee27f5715a.pdf
    • https://static.usrfiles.com/ugd/b8c837_7f726ef6f4fc4e1ab773155ee955dfe2.pdf
    • https://static.usrfiles.com/ugd/b8c837_311c22bcd3a346988ed7ac3f2868541d.pdf
    • https://static.usrfiles.com/ugd/b910ae_10db352c9442476d88460bbcebd719ad.pdf
    • https://static.usrfiles.com/ugd/a640e9_01e4ba9efe214975a4b25ab6e331eba0.pdf
    • https://static.usrfiles.com/ugd/b8c837_7f02971d4dbd460aa7a2e38970a878a1.pdf
    • https://cdn.shopify.com/s/files/1/0429/4469/2383/files/the_anatomy_coloring_book_wynn_kapit.pdf
    • https://cdn.shopify.com/s/files/1/0436/3576/9497/files/tenalupejanobutimexog.pdf
    • https://cdn.shopify.com/s/files/1/0435/5712/6295/files/ageless_body_timeless_mind_full.pdf
    • https://cdn.shopify.com/s/files/1/0431/1239/9010/files/tizikosotixobag.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_off00005c55.bin
142ff3d3f13ddb931206adc362dc8fc9a0a1d3cfcc0c6b94f56839b99cd7ec24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C55 5116 bytes
font_01_sfnt_off00006dc4.bin
be9346559b00c4c33ef0ac823e16ec024b2999e292000bcc86787baf484e5ecf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC4 9472 bytes

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