PDF malware analysis — malicious · 7809b74ed24ef0e9

MALICIOUS

PDF

39.6 KB Created: 2020-08-30 11:58:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 95fe4eb1d3b4df3f654e5d5d6ca32ca2 SHA-1: c63a1b284f2f67d1262ad01b21a88dcca8f86391 SHA-256: 7809b74ed24ef0e999bc7c6b6a8ecb70d936ff8318e02f4cc55f1ec334d3abf8

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL and appears to be a lure for a 'Nissan connect sd card update download'. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, suggesting a link farm used for SEO poisoning to attract victims. The SE_DOWNLOAD_BUTTON heuristic further supports the lure-based attack pattern.

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.club/wix?keyword=nissan+connect+sd+card+update+download
- https://static.usrfiles.com/ugd/b56239_56b9196caf374854b627a2cc9bde5932.pdf
- https://static.usrfiles.com/ugd/b8c837_c1c7999ccea14f1688f8a99001886d89.pdf
- https://static.usrfiles.com/ugd/b8c837_05f0478cb90445b1bd23fb2084d983f9.pdf
- https://static.usrfiles.com/ugd/b8c837_58779bafa566480795ba0f74cc2b1f02.pdf
- https://static.usrfiles.com/ugd/a86d68_c2071a13c5b94467a7acdf76e3ca4190.pdf
- https://static.usrfiles.com/ugd/b8c837_65e00add5f7e4f819b732a07367ea238.pdf
- https://static.usrfiles.com/ugd/225520_a7fa5bd7565b4a868cef05fb14e23e07.pdf
- https://static.usrfiles.com/ugd/8cbfce_b77ac924a62245529b1abd5708a821f5.pdf
- https://static.usrfiles.com/ugd/455f95_71cee377316b46619e1b9d6ae370a7b0.pdf
- https://cdn.shopify.com/s/files/1/0437/5085/0709/files/14822503812.pdf
- https://cdn.shopify.com/s/files/1/0428/3973/6487/files/fekufudogujakujumugonuno.pdf
- https://cdn.shopify.com/s/files/1/0428/5900/4070/files/linear_algebra_with_applications_leon.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.

Filename	Kind	Source	Size
`stream_005_off0000763f.bin` `d7977f8ba43faca66c88cca150c2d57ef3ec0ce138a996d0f2f588cdd72f7153`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x763F	17988 bytes
`font_00_sfnt_off00004339.bin` `893d235f6c6980f4a2cca8b4882155b002ca6f3468e1580e093ec6c0fa0dff45`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4339	5128 bytes
`font_01_sfnt_off000054c0.bin` `3ffc10341bc2bb2c373df2b02fe5bfd975cafcd4f8c42f4ea8350fb906060596`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x54C0	9820 bytes

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