Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccf93ef515dd133b…

MALICIOUS

PDF

36.6 KB Created: 2020-08-02 15:13:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7ac27e744a0c51e7dd2ddb343b07b29 SHA-1: b3a562183f1286912e1379f2020f581f5e2c352f SHA-256: ccf93ef515dd133b3746fca3a62d8e98092c7dd8d4b568d1ff847b295ad086dc
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 of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=lifehouse+you+and+me+chords'. The document body contains garbled text but includes the same malicious URL and a benign-looking URL, suggesting a lure to external content. The primary intent appears to be redirecting users to malicious infrastructure.

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=lifehouse+you+and+me+chords
    • http://files.mywmspta.com/uploads/1/3/2/7/132712093/vobam-dufuxedibadoxi-bezimojo.pdf
    • http://vuminado.korinnew.com/uploads/1/3/1/4/131407511/teraxib-fopetiganut-tenovuxav-fozubap.pdf
    • http://files.aflskincare.com/uploads/1/3/2/3/132303189/2670669.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sogogetuxupoxex.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/83583068491.pdf
    • https://cdn.shopify.com/s/files/1/0431/6453/2900/files/bajaweputuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/jegadovibapuxivojedo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4888/5662/files/47925072231.pdf
    • https://cdn.shopify.com/s/files/1/0435/3739/9960/files/36366479396.pdf
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/the_light_between_oceans_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/segexoladegesowibetigis.pdf
    • https://cdn.shopify.com/s/files/1/0437/6169/6925/files/bawoxizujepumixak.pdf
    • https://cdn.shopify.com/s/files/1/0437/2368/6056/files/48216487397.pdf
    • https://cdn.shopify.com/s/files/1/0440/7348/4438/files/xuxewizabapuwepekiw.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004633.bin
c70fcbd4f2f1d23a3d176d50c6f6307b16c672e1d0fdf19eaca377032ad19a3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4633 5072 bytes
font_01_sfnt_off0000573e.bin
95c94b5e1e722beb9309119dfc5e94324f10b05b71f303ee7659693a121b1cfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x573E 9364 bytes
font_02_sfnt_off0000776c.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x776C 4324 bytes

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