Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b2dce97da565c7d…

MALICIOUS

PDF

46.6 KB Created: 2020-09-04 23:49:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90c91af61f6ec63eebbfaed801645256 SHA-1: 53dbf36083a54383c525ed4b27126294df60ba70 SHA-256: 1b2dce97da565c7d5997b8e3be18e28825c09da36b6cb0532e1def8646f77157
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, a technique often used for SEO manipulation or to redirect users to malicious sites. One critical heuristic flagged a link to a known malicious redirector. The document body contains a URL that appears to be part of this redirection scheme.

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.me/wix?keyword=guided+sleep+meditation+ocean
    • https://static.usrfiles.com/ugd/b8c837_0426e0383324440681404eb86a2f10f8.pdf
    • https://static.usrfiles.com/ugd/87fdc7_8b0c6259d6e24f0d91a89c6155fb249c.pdf
    • https://static.usrfiles.com/ugd/516793_4b23d95e499442ecb4933ff244077794.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_72193e77cbcf419a89d543dadd10a12a.pdf
    • https://static.usrfiles.com/ugd/99965f_f9524f753b8247b2b251a1ebf21c87eb.pdf
    • https://cdn.shopify.com/s/files/1/0430/1671/6437/files/royal_blue_school_uniform_tops.pdf
    • https://cdn.shopify.com/s/files/1/0431/9304/1053/files/formatting_code_in_intellij_mac.pdf
    • https://cdn.shopify.com/s/files/1/0447/9811/6006/files/holt_mcdougal_algebra_1_common_core_teacher_s_edition.pdf
    • https://cdn.shopify.com/s/files/1/0437/8171/8167/files/wegesugitajaxigenoz.pdf
    • https://cdn.shopify.com/s/files/1/0437/9607/0549/files/free_online_language_translation.pdf
    • https://static.usrfiles.com/ugd/041b56_a73d7576e1a74d778fdf39a59c9ece8c.pdf
    • https://static.usrfiles.com/ugd/409ca8_3f2030efb4134b63aaf2a15e6b1113ff.pdf
    • https://static.usrfiles.com/ugd/10e3af_f9b723f0196f4ad799cb2f975bc7d76e.pdf
    • https://static.usrfiles.com/ugd/21a131_e0bae4a6c5164e568c7e2c9e48409ee9.pdf
    • https://static.usrfiles.com/ugd/286fb8_31687b4bda094b48b18ecf3d47bc7e53.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
font_00_sfnt_off00006c2f.bin
8d160268a6da3cbf5c398a4eb657da5b69b9928f5391a35355e95de94199bba3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2F 5036 bytes
font_01_sfnt_off00007d37.bin
cbf83bfc09b40d8b7bf27857b1ef95a3a08a5d444f81534fcca53fdfcb02f420		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D37 9980 bytes
font_02_sfnt_off00009f64.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F64 4324 bytes

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