Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9b83fdd42c7b692…

MALICIOUS

PDF

38.9 KB Created: 2020-08-18 17:33:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40c86ba45e661b67e2dd18006b0117cb SHA-1: fec1a543cacd0cd3ea56e1bd963cace8c1062db9 SHA-256: d9b83fdd42c7b692f39dec9e7ad47b9098b68071ecf57a177b28126127407c6b
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 the primary malicious redirector identified as ttraff.com. This suggests a link farm or SEO poisoning attack designed to lure users to malicious content. The document body is heavily obfuscated and contains remnants of the redirector URL, further supporting this conclusion. No scripts were extracted, limiting the analysis of direct payload delivery.

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.com/pify?keyword=bewars+audio+songs+naa+songs+ing+com
    • http://semerus.newzionchurchofchrist.org/uploads/1/3/1/4/131454165/6897467.pdf
    • http://vaxaxubis.authorlucymcconnell.com/uploads/1/3/1/3/131383613/d93bba1132cd8.pdf
    • http://files.olgasplaces.com/uploads/1/3/0/7/130775380/62a7d607486ae8.pdf
    • http://files.elder-well.net/uploads/1/3/2/8/132814022/3c15dc1c8.pdf
    • https://cdn.shopify.com/s/files/1/0438/2215/3890/files/32068499734.pdf
    • https://cdn.shopify.com/s/files/1/0437/0877/6599/files/akuntansi_keuangan_menengah.pdf
    • https://cdn.shopify.com/s/files/1/0434/3765/4178/files/jazizulepa.pdf
    • https://cdn.shopify.com/s/files/1/0432/6083/8050/files/13700305612.pdf
    • https://cdn.shopify.com/s/files/1/0428/2351/6323/files/51890170275.pdf
    • https://cdn.shopify.com/s/files/1/0440/3914/3574/files/guzopovofavuwipokewup.pdf
    • https://cdn.shopify.com/s/files/1/0431/0764/7639/files/87265139421.pdf
    • https://cdn.shopify.com/s/files/1/0429/2473/6678/files/10534064014.pdf
    • https://cdn.shopify.com/s/files/1/0428/9921/0407/files/sejisorimu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6533/files/bolatateduwepube.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8913/files/17753854053.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_off00005a2e.bin
6ba3c8c81523ff77ee334a59de0a7c8376a2756c9fca69571a1903bed676aa3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A2E 5368 bytes
font_01_sfnt_off00006c6a.bin
1bee310fc1e827699046fd8b3554ea4c787f1aeb870b691aaf3722b3ec04023d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6A 9908 bytes

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