Malicious PDF — malware analysis report

Static analysis result for SHA-256 92e51f7c565555c7…

MALICIOUS

PDF

60.5 KB Created: 2020-08-23 18:17:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 949e438ab46ab6d67dbb41908300ffe0 SHA-1: 0fec604d131749e45e8266c11ccec6c419fa5388 SHA-256: 92e51f7c565555c79338ef3104d060843bca1fa394cb209d91fa453d4027d6d9
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though partially corrupted, contains text related to 'free html5 admin templates 2019' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics confirm the malicious nature of the embedded links.

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/pify?keyword=free+html5+admin+templates+2019
    • http://files.unitetheminds.com/uploads/1/3/0/7/130775357/jewabunerinazonufop.pdf
    • http://ridifir.loveadelyn.com/uploads/1/3/0/9/130969525/5402300.pdf
    • https://cdn.shopify.com/s/files/1/0433/6159/9656/files/kaxubos.pdf
    • https://cdn.shopify.com/s/files/1/0437/7804/8161/files/24083396442.pdf
    • https://cdn.shopify.com/s/files/1/0435/3871/0696/files/95961914670.pdf
    • https://cdn.shopify.com/s/files/1/0432/0706/5757/files/bagazesugedigidojidopa.pdf
    • https://cdn.shopify.com/s/files/1/0433/9122/1911/files/ceclor_250mg_5ml_bula.pdf
    • https://cdn.shopify.com/s/files/1/0434/0292/0086/files/41198495909.pdf
    • https://cdn.shopify.com/s/files/1/0439/1780/3675/files/ansaldo_energia_annual_report_2013.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/pogemedese.pdf
    • https://cdn.shopify.com/s/files/1/0431/9831/6705/files/gifarironi.pdf
    • https://cdn.shopify.com/s/files/1/0439/2887/9272/files/bikobuwuboduvozokit.pdf
    • https://cdn.shopify.com/s/files/1/0462/2109/9162/files/37451786768.pdf
    • https://cdn.shopify.com/s/files/1/0430/7792/7072/files/javascript_replace_string.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_off0000ade5.bin
f79ebaa1798c72e7cd812f4d79afe7c22034d6c8ef250e8ce6426e3a5d6da3ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADE5 5760 bytes
font_01_sfnt_off0000c15a.bin
ab37012c8d8540a00f96b584f53308790c7e6b22372ab51fab485246bbdbfa61		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC15A 10380 bytes

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