Malicious PDF — malware analysis report

Static analysis result for SHA-256 4481c7722252ceaf…

MALICIOUS

PDF

41.1 KB Created: 2020-08-19 01:06:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c45c7b9897762188b0981b494562b569 SHA-1: 029710e63792dd01c093154c0012f304da671ac5 SHA-256: 4481c7722252ceaf9d2c2188a88e4f89e111d7ca93b0e64dbf2dd2c9ca824f15
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though partially corrupted, includes the same URL and references 'Grey's anatomy episode guide season 4', suggesting a lure. The presence of numerous other links, many hosted on Shopify, indicates a link farm strategy. No scripts were extracted from this sample.

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=grey%2527+s+anatomy+episode+guide+season+4
    • http://baxolimis.opalandplum.com/uploads/1/3/1/4/131407558/nobenevazofi-ziladerelirumer.pdf
    • http://files.7jarsofhotpickledpeppers.com/uploads/1/3/1/3/131398334/fujunavinifinuleko.pdf
    • http://files.amandaetchison.com/uploads/1/3/0/7/130775310/sujum.pdf
    • http://rarisex.roland-realty.com/uploads/1/3/1/6/131607163/9242480.pdf
    • https://cdn.shopify.com/s/files/1/0434/6265/6152/files/sata_stands_for.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16994954809.pdf
    • https://cdn.shopify.com/s/files/1/0437/5068/6874/files/zakinekesolelivi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7868051279.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/kufuxemuzopozibuxeteximo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3593/4370/files/26960758701.pdf
    • https://cdn.shopify.com/s/files/1/0433/2853/6734/files/93234341697.pdf
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/33452596807.pdf
    • https://cdn.shopify.com/s/files/1/0434/8978/8069/files/ipad_write_on_with_stylus.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_off000061a1.bin
a2456a3aa69886f1be79ac3ec65d6f03382fe341b6fb7f2e2efe1dfaf1702fbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61A1 5504 bytes
font_01_sfnt_off00007461.bin
4a3440ce251a1525f7c56247562da0f519a766303c4ab9a3b2f3c1fba600f373		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7461 10312 bytes

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