Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3f2dea00ffca013…

MALICIOUS

PDF

105.8 KB Created: 2020-08-02 20:45:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a146c2ee0415928168fff72bcf39f216 SHA-1: 0a2146f4a24ca27d7d0d3750f53ef45a4ced890f SHA-256: b3f2dea00ffca0139ddc9bb7e78e4d193a39ea67ec4e8400176e560365fd5446
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links that redirect to a known malicious domain, ttraff.com. This indicates a phishing or redirection attempt. The document body, though heavily obfuscated, contains the string 'Shayla black pdf' and a URL that matches the malicious redirector. The presence of numerous external PDF links, many hosted on cdn.shopify.com, suggests a link farm or SEO poisoning tactic to increase visibility and lure victims.

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=shayla+black+pdf
    • http://files.tomboulian.org/uploads/1/3/0/7/130739886/5a01a.pdf
    • http://files.bigloveletters.net.au/uploads/1/3/1/0/131070842/povidenowe.pdf
    • http://files.northendyoga.com/uploads/1/3/1/3/131383743/562867.pdf
    • https://cdn.shopify.com/s/files/1/0440/2973/9173/files/57140314954.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53981477141.pdf
    • https://cdn.shopify.com/s/files/1/0429/1916/6119/files/98766937813.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doworefobose.pdf
    • https://cdn.shopify.com/s/files/1/0427/7973/8278/files/27271591829.pdf
    • https://cdn.shopify.com/s/files/1/0434/5944/4896/files/12032048051.pdf
    • https://cdn.shopify.com/s/files/1/0433/7978/5886/files/satemeso.pdf
    • https://cdn.shopify.com/s/files/1/0434/2133/5702/files/vasabidib.pdf
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/69213918032.pdf
    • https://cdn.shopify.com/s/files/1/0429/5560/4121/files/fezuwugovekofokenev.pdf
    • https://cdn.shopify.com/s/files/1/0436/7430/4662/files/84805829605.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_off0001654a.bin
15a8cdee1ec3230270f49e912911805f0377bd7375b65f634970c58ae653fd2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1654A 5380 bytes
font_01_sfnt_off000177a1.bin
99849f54bc4bdced5af0f0a584ece901b1650c711d435306b8d509ee99ef4d69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x177A1 10156 bytes

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