Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcf80e7859e212c0…

MALICIOUS

PDF

57.2 KB Created: 2020-08-29 16:48:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4dde060e8285e254229830571bf6d0dc SHA-1: d8663e65c624cf165a04e1a11802ef226f63a521 SHA-256: fcf80e7859e212c0210bb5f332395ba23663eacaf36dd4f091b4e4f2c6cdcde7
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the malicious URL and other URLs hosted on Shopify and usrfiles.com, suggesting a link farm or redirection scheme. The primary malicious URL is https://ttraff.cc/wix?keyword=christina+aguilera+ft.p+diddy-tell+m, which likely leads to a phishing or malware download page.

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=christina+aguilera+ft.p+diddy-tell+m
    • https://cdn.shopify.com/s/files/1/0435/4814/7867/files/edit_using_adobe_acrobat_reader.pdf
    • https://cdn.shopify.com/s/files/1/0433/2906/1014/files/79061286344.pdf
    • https://cdn.shopify.com/s/files/1/0432/1338/9992/files/92791848393.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/88665014182.pdf
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/58567173008.pdf
    • https://static.usrfiles.com/ugd/b8c837_99d91dbbce9b448ba795b7bd3e02dcd4.pdf
    • https://static.usrfiles.com/ugd/b8c837_049435b7521a46c4a353f38bb6e5166b.pdf
    • https://static.usrfiles.com/ugd/b8c837_a45e1b3dd2fe47818ec4a5f164506978.pdf
    • https://static.usrfiles.com/ugd/e8506d_eedf9ce460d34a7ca6cec5458c92f231.pdf
    • https://cdn.shopify.com/s/files/1/0438/5095/6960/files/born_yesterday_play_script.pdf
    • https://cdn.shopify.com/s/files/1/0433/3171/5225/files/resuvep.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000bb9f.bin
92c9176283b11e97757eb814ec56c54329f5fbec55f9781aab08eefe03bcccfd		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xBB9F 18076 bytes
font_00_sfnt_off00007932.bin
3a0a079b63df7ff767a75c8ef9efa4d00a2b40fabdae8e05e9cb86d89d2d6d28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7932 5528 bytes
font_01_sfnt_off00008be7.bin
a75895926464e843af61ebc0dfecdd83652823e307b50f3792974236ffc7ba19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BE7 15252 bytes

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