Malicious PDF — malware analysis report

Static analysis result for SHA-256 d353756bdad358ce…

MALICIOUS

PDF

70.6 KB Created: 2020-08-08 02:02:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c3d1bd0bf472404f38825570ccd7e21 SHA-1: 94840a22778b202755aa708460419c28f2bd4884 SHA-256: d353756bdad358ce3bdf96523e5d210615dc1a4c868b4d604ca3dfa7b1215e30
120 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 of these links, https://ttraff.ru/wb?keyword=environmental%20pollution%20by%20heavy%20metals%20pdf, is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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.ru/wb?keyword=environmental%20pollution%20by%20heavy%20metals%20pdf
    • http://files.sweetstreet.info/uploads/1/3/1/4/131407469/7555571.pdf
    • http://kujesonef.hellohapa.com/uploads/1/3/0/7/130739024/2132708.pdf
    • http://files.worthit.productions/uploads/1/3/0/8/130813528/8788032.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tiwimuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78649322563.pdf
    • https://cdn.shopify.com/s/files/1/0436/4815/5806/files/anlise_combinatria_e_probabilidade_enem.pdf
    • https://cdn.shopify.com/s/files/1/0441/3010/7544/files/fubumijejikozomoniganujun.pdf
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/61680821750.pdf
    • https://cdn.shopify.com/s/files/1/0428/8770/8825/files/iit_jee_organic_chemistry_notes_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/5765/9547/files/36941146723.pdf
    • https://cdn.shopify.com/s/files/1/0435/3464/7460/files/vegoguramujiti.pdf
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/32877816771.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_off0000c293.bin
d35a46229cef1646c6cc1f7d38b760273ce7a0f59d6b5f546dc52cb28903373c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC293 5540 bytes
font_01_sfnt_off0000d53f.bin
23cd5a602c04a87c5e18cbe1a1fe9e4a490c52bc22b6b7a090f27c87007bb569		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD53F 10364 bytes
font_02_sfnt_off0000f8c7.bin
e8a2a40c81204f68d188656ee186563bb41cec9665ac8bf1c139965098426a80		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C7 16080 bytes

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