Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ea9b38a55dfd2df…

MALICIOUS

PDF

62.3 KB Created: 2020-07-31 09:49:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 979a36fc648c2a4139defe0fc63fe282 SHA-1: e9b44c4b56b156cec76242e063b403baae484b80 SHA-256: 2ea9b38a55dfd2dfe19d4565c5211b0871da11ccc47106fefd6312008ab0f8d4
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is indicative of an SEO link farm. One critical heuristic firing confirms a malicious redirector link to 'ttraff.cc'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the text 'Amblyopia definition pdf', suggesting a lure to disguise the malicious intent of redirecting users to potentially harmful sites.

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.cc/pify?keyword=amblyopia+definition+pdf
    • http://files.discountstoragelubbock.com/uploads/1/3/0/7/130739073/pobupewesezepenodan.pdf
    • http://files.johnmanubay.com/uploads/1/3/0/7/130775997/340f20b75684.pdf
    • http://files.makeitcapture.com/uploads/1/3/2/6/132681728/3fdd90fb3c38.pdf
    • https://cdn.shopify.com/s/files/1/0431/2255/7095/files/96636487386.pdf
    • https://cdn.shopify.com/s/files/1/0431/2399/8874/files/8664939423.pdf
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/49129472446.pdf
    • https://cdn.shopify.com/s/files/1/0433/6254/9910/files/juwunul.pdf
    • https://cdn.shopify.com/s/files/1/0429/5809/4495/files/xidemesixeda.pdf
    • https://cdn.shopify.com/s/files/1/0429/1212/0998/files/lakifuwijewewajifa.pdf
    • https://cdn.shopify.com/s/files/1/0431/3966/1986/files/50337672353.pdf
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/91759930539.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/56866497478.pdf
    • https://cdn.shopify.com/s/files/1/0432/0837/6482/files/86848203103.pdf
    • https://cdn.shopify.com/s/files/1/0435/6590/8136/files/49514790039.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_off0000b19d.bin
9375f01050f2ab4ae7edb53d92d0363c7e468e0ae5bdb80a13ecac1b1106da98		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB19D 4932 bytes
font_01_sfnt_off0000c24e.bin
d7f1a0da1152904fe7a202fdde49f891a46db18995f880cb917313b99a11fac8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC24E 12188 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.