Malicious PDF — malware analysis report

Static analysis result for SHA-256 53450f15f451522f…

MALICIOUS

PDF

57.0 KB Created: 2020-08-01 21:09:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3c1c19e1cb539eadd89001e38edfcac SHA-1: 4f63152aef55f9160632ce42d69167cc02a689a4 SHA-256: 53450f15f451522f5ce21fc7474427ee6c42111c4d866ba3f309da1995c8ff64
150 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.com/pify?keyword=clicker+heroes+gild+guide', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and another Shopify URL, suggesting a lure to external content. The presence of multiple PDF links and the ML classification strongly indicate malicious intent, likely for phishing or malware delivery.

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=clicker+heroes+gild+guide
    • http://files.katerinalewisviola.com/uploads/1/3/2/7/132740234/2608020.pdf
    • http://files.doulababes.com/uploads/1/3/1/3/131380598/5934a67b.pdf
    • http://files.loftypoppy.com/uploads/1/3/1/8/131856310/4988737.pdf
    • https://cdn.shopify.com/s/files/1/0427/5961/8716/files/jezojodokafofilisis.pdf
    • https://cdn.shopify.com/s/files/1/0438/4541/9170/files/bogadisil.pdf
    • https://cdn.shopify.com/s/files/1/0434/0213/3656/files/40614022965.pdf
    • https://cdn.shopify.com/s/files/1/0433/1605/2123/files/wesoxiwemazodina.pdf
    • https://cdn.shopify.com/s/files/1/0430/3749/1354/files/34630664.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/jawerolukudamewiram.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/guwumi.pdf
    • https://cdn.shopify.com/s/files/1/0435/1341/3791/files/67193721333.pdf
    • https://cdn.shopify.com/s/files/1/0440/4979/3174/files/7964521455.pdf
    • https://cdn.shopify.com/s/files/1/0436/3393/4496/files/33660130145.pdf
    • https://cdn.shopify.com/s/files/1/0427/8062/3015/files/xisaru.pdf
    • https://cdn.shopify.com/s/files/1/0429/2401/5783/files/foluxibe.pdf
    • https://cdn.shopify.com/s/files/1/0432/7319/1587/files/99771406811.pdf
    • https://cdn.shopify.com/s/files/1/0429/0599/3375/files/28011986458.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_off0000a22e.bin
aa943a1606b911c7b0ff7f932f61cd0bebff739a93191401e8d29054178f6275		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA22E 4960 bytes
font_01_sfnt_off0000b306.bin
021f30d28c7c0e661bf8a9cae4dba5e3777c70063751e92d1e67f315c55ab02b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB306 10496 bytes

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