Malicious PDF — malware analysis report

Static analysis result for SHA-256 55fe0430bdca4776…

MALICIOUS

PDF

55.1 KB Created: 2020-08-17 01:14:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e255a88466fc8f313b637b7739688fc SHA-1: 136d252e806f9e895bdefa890b9957343e68469f SHA-256: 55fe0430bdca477629c1b50d90b4f854fa71a4a69ce3495217ed3826ee7ee2f0
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. This URL is presented to the user as a link to 'livecareer free resume templates', indicating a social engineering lure. The PDF also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or content distribution network used to host the malicious content. 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.cc/pify?keyword=livecareer+free+resume+templates
    • http://baviguf.friskypress.com/uploads/1/3/0/8/130814229/8309217.pdf
    • http://files.thatpenbloke.com/uploads/1/3/0/8/130874011/7628351.pdf
    • http://files.thetappingtrend.com/uploads/1/3/1/4/131437377/wikulevufutiwa-xowosefezida.pdf
    • https://cdn.shopify.com/s/files/1/0440/3383/5173/files/jilegukerolivepiwulon.pdf
    • https://cdn.shopify.com/s/files/1/0430/3729/4754/files/msc_botany_notes.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6324/files/51210949473.pdf
    • https://cdn.shopify.com/s/files/1/0431/6191/1458/files/96575599005.pdf
    • https://cdn.shopify.com/s/files/1/0428/6418/1404/files/gradle_tutorial_java.pdf
    • https://cdn.shopify.com/s/files/1/0440/0742/4158/files/wagotakutapewakup.pdf
    • https://cdn.shopify.com/s/files/1/0430/8815/0690/files/armed_conflict.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/68769425665.pdf
    • https://cdn.shopify.com/s/files/1/0432/1558/5448/files/semuwitipaxanadapibovimiv.pdf
    • https://cdn.shopify.com/s/files/1/0450/0137/5912/files/advantages_of_using_technology_in_teaching_mathematics.pdf
    • https://cdn.shopify.com/s/files/1/0430/2218/8701/files/18730031156.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_off00009a3e.bin
99ffe54e1cb717b40bd3027973790bbc5203b010417b89a4c3a5885e583bd9b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A3E 5160 bytes
font_01_sfnt_off0000abc0.bin
1cb99a07c2213783390ce1c7448b22b3c48dae383379e2e28978109fc9d55ad5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABC0 10476 bytes

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