Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0b2098cac1a38cb…

MALICIOUS

PDF

34.2 KB Created: 2020-08-30 03:10:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e7be50c6855c8ddc57743ae16e2f3edb SHA-1: 015b6d07780d6a5b1a165574d19d280ca45cf677 SHA-256: c0b2098cac1a38cb78bd94e9ab22bbe3d059388d3924fa535b9afeb0285c210e
154 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a malicious redirector and link farm. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates a direct link to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests the document is part of a larger scheme to manipulate search engine results or distribute malicious content. The embedded URL https://ttraff.com/wix?keyword=celaleddin+ada+cagir+geleyim+sultanim+indir is flagged as malicious, likely serving as the initial lure or redirector. The document body contains garbled text and URLs, further supporting the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.com/wix?keyword=celaleddin+ada+cagir+geleyim+sultanim+indir
    • https://static.usrfiles.com/ugd/097bd5_2de5a04fc0284fd3994e83546e613eef.pdf
    • https://static.usrfiles.com/ugd/b8c837_e24d915b7adb4a728f09d69b917fe139.pdf
    • https://static.usrfiles.com/ugd/b8c837_d22341427f8f4d27855f576d3dc0180f.pdf
    • https://static.usrfiles.com/ugd/09273f_dc5d133ef39d47488d23b9e9b5d2b6d8.pdf
    • https://static.usrfiles.com/ugd/4725f1_7dae006ae25344258193fab796a92180.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf8204b084274036b0933a571710e5af.pdf
    • https://static.usrfiles.com/ugd/b8c837_1ceb78c68bbf485ea5bca3884f740ab8.pdf
    • https://static.usrfiles.com/ugd/2e16aa_b92d35e18e134abfa0d4cc229e9fc403.pdf
    • https://static.usrfiles.com/ugd/e3834b_d43b9d72a22f4b1aab18cf727348924d.pdf
    • https://static.usrfiles.com/ugd/3b47cb_0bab8af6a5e048de847ba29ac6712ba8.pdf
    • https://static.usrfiles.com/ugd/b8c837_6dec77c6d46b470ea3f56922e1c7dda0.pdf
    • https://static.usrfiles.com/ugd/b8c837_c79df8530f58410ab29620deeff8cf9f.pdf
    • https://static.usrfiles.com/ugd/bfbc46_7515efd4dbbf4a3e82130ac0c76fe9f9.pdf
    • https://static.usrfiles.com/ugd/b8c837_a3c3082f7c82491f8803818f1078a616.pdf
    • https://static.usrfiles.com/ugd/c20ea7_ce09d83fdb4c43d98b15d34403a6329c.pdf
    • https://static.usrfiles.com/ugd/b8c837_a869920c2be9433d96f3d89cfd14d061.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_off00004603.bin
1f7a1016307a247727069841109a28c413dfc14d06775c5553a67316cb866257		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4603 5268 bytes
font_01_sfnt_off000057d7.bin
953f3e6a1998b6e2b584e54750dd8bf3886825474e2dae65f28da896eb24c301		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57D7 10900 bytes

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