Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa9a03f27e4d01aa…

MALICIOUS

PDF

42.4 KB Created: 2020-08-14 18:11:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46cc8a24ae136a58e010381423d1281a SHA-1: 4c5af665cc4d847c0601dad3c96e221a77be5a29 SHA-256: fa9a03f27e4d01aa9bc5de2a1d6da57b6da8b50aa3d7ec914e0e92606654bf86
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation or to obscure the true malicious destination. One critical heuristic identified a direct link to a known malicious redirector at `https://ttraff.com/pify?keyword=coplanar+waveguide+electric+field+distribution`. The document body, though heavily obfuscated, contains this same URL, indicating the primary intent is to redirect the user to this malicious site.

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=coplanar+waveguide+electric+field+distribution
    • http://files.mentorsmatter.us/uploads/1/3/1/1/131164479/f8f738384.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6166/files/98798792840.pdf
    • https://cdn.shopify.com/s/files/1/0428/2990/6079/files/zofabanedero.pdf
    • https://cdn.shopify.com/s/files/1/0433/6674/4216/files/11539609114.pdf
    • https://cdn.shopify.com/s/files/1/0432/5936/3478/files/5607818128.pdf
    • https://cdn.shopify.com/s/files/1/0434/9159/0308/files/vixajogana.pdf
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/20785939196.pdf
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/26673355808.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47878122177.pdf
    • https://cdn.shopify.com/s/files/1/0430/0213/4681/files/pm_gramin_awas_yojana_form.pdf
    • https://cdn.shopify.com/s/files/1/0432/9196/7646/files/probability_and_statistical_inference_hogg_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/2283/4071/files/31724632330.pdf
    • https://cdn.shopify.com/s/files/1/0431/4071/0566/files/81343797537.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_off000067ac.bin
95ff63e05c01893c88a1b09522399d940c2fa94d3f11698390310a916ac08bcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67AC 5520 bytes
font_01_sfnt_off00007a90.bin
34dbde41d1e3b6ca687162ecad369761467bd8e57716cb086d38642ab268c200		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A90 10044 bytes

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