Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3560454043e8ae4…

MALICIOUS

PDF

43.2 KB Created: 2020-08-25 13:23:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b30ba86b5074d64aafd735c7120442cd SHA-1: 691b2facbfea7c90ef16977962e7352edde1a318 SHA-256: f3560454043e8ae4dbf1acc52f9ea421618e02c30ba97c569ecb059026f9f5db
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The embedded URL `https://ttraff.com/pify?keyword=arnold+chiari+malformation+syrinx` is a strong indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. The presence of numerous other links, many hosted on Shopify, suggests a broad campaign to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=arnold+chiari+malformation+syrinx
    • http://files.rosemaryrichings.com/uploads/1/3/1/3/131380029/6558947.pdf
    • http://files.goldenhoursc.com/uploads/1/3/0/8/130873715/rofafenaxufav.pdf
    • http://mamovo.themillbrookhunt.com/uploads/1/3/1/6/131606490/xaparuwenezifimi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1064/files/37154089565.pdf
    • https://cdn.shopify.com/s/files/1/0436/9252/3675/files/41809813691.pdf
    • https://cdn.shopify.com/s/files/1/0428/7817/3343/files/92661194772.pdf
    • https://cdn.shopify.com/s/files/1/0448/3540/5985/files/afrikaans_sinonieme_woordeboek.pdf
    • https://cdn.shopify.com/s/files/1/0432/3508/2402/files/96605284996.pdf
    • https://cdn.shopify.com/s/files/1/0436/9927/3882/files/capm_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0434/0488/6166/files/72355191894.pdf
    • https://cdn.shopify.com/s/files/1/0431/7030/0061/files/16287467008.pdf
    • https://cdn.shopify.com/s/files/1/0433/7667/2918/files/1890937927.pdf
    • https://cdn.shopify.com/s/files/1/0435/2871/6439/files/29494062819.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_off00006c36.bin
2377ad321dbbc85a16a4861a772ec1d3b7ca1c9c35c70e1fc136fdfe9acb580b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C36 5420 bytes
font_01_sfnt_off00007e72.bin
389f02f5c0540e236b2f797c692cfd951f211c447859853136bcffe62bd96e6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E72 9816 bytes

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