Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce04c8af28905457…

MALICIOUS

PDF

58.8 KB Created: 2020-09-05 11:04:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a5bb5214e8c187cd35671f5681b1e1e SHA-1: 421f1bd3ebbf2ed7ffc3fa3a9ae4ab4913a24547 SHA-256: ce04c8af28905457bf67ec4a4a6a82ac786af83a8fbbcbc6b2f586da2fdaad24
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic. No scripts were extracted from this sample.

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.link/wix?keyword=asccp+cervical+cancer+screening+guidelines+2016
    • https://cdn.shopify.com/s/files/1/0429/0327/3628/files/bihar_police_si_exam_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0434/4712/4135/files/timeline_presentation_template_prezi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6393/4105/files/chevrolet_captiva_2012_workshop_manual.pdf
    • https://static.usrfiles.com/ugd/b8c837_683c0a4f93294e2981165eedbd0cb3e6.pdf
    • https://static.usrfiles.com/ugd/2b98a3_46096fee5ebf4881aefcbb1723352aaa.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6721/files/weribowagujaja.pdf
    • https://cdn.shopify.com/s/files/1/0432/1958/3133/files/sajufagumenuwag.pdf
    • https://cdn.shopify.com/s/files/1/0431/7269/2122/files/14459664011.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2443/files/winavexakuguxiwawofotujob.pdf
    • https://static.usrfiles.com/ugd/defcb2_7405272b89194d299753741c8107c76c.pdf
    • https://static.usrfiles.com/ugd/9ef0c3_e0cc5bb0ec4e4fa8b9136670d5518d3c.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_off0000a79a.bin
1cffc08656de7c45095aaf5087100b28856e4b0f4944730a2e3a1de1bfaa114d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA79A 5768 bytes
font_01_sfnt_off0000bb5f.bin
347a545dc7c77e03c3c3b82492eabacf93fb5a562e4467cce012e4e57928d272		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB5F 10504 bytes

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