Malicious PDF — malware analysis report

Static analysis result for SHA-256 512127bdc3feb27c…

MALICIOUS

PDF

37.0 KB Created: 2020-08-30 02:23:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74f4bb938d7c1527d612a63040f32b2e SHA-1: 599f09f9454a6ebbdffb26e184a179a4b7895d87 SHA-256: 512127bdc3feb27cf315fd676bef803fc1a4e2ed9025429ab723403d214b85ab
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.link'. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Project Zomboid campfire'. This suggests the document's primary purpose is to redirect the user to malicious infrastructure. 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=project+zomboid+campfire
    • https://static.usrfiles.com/ugd/b8c837_22fce6fc27c9450e922b808bbd7a702b.pdf
    • https://static.usrfiles.com/ugd/63d3ad_78813b936aa74b0cbb851d0947c192a5.pdf
    • https://static.usrfiles.com/ugd/39cb9d_9f964f6ab676422c9ce2f7802492dd1a.pdf
    • https://static.usrfiles.com/ugd/b8c837_81171a28561940d09ed1a8e461cc24b1.pdf
    • https://static.usrfiles.com/ugd/b8c837_834f1ea47de1430fbb9741efb9b80c99.pdf
    • https://static.usrfiles.com/ugd/b8c837_799fc3ec7588419b9818c07b63ee78e6.pdf
    • https://cdn.shopify.com/s/files/1/0433/9512/1301/files/xifuwuruxigadevoxereba.pdf
    • https://cdn.shopify.com/s/files/1/0437/0671/2219/files/niwodapobafidivajilela.pdf
    • https://cdn.shopify.com/s/files/1/0432/8692/1376/files/29818962953.pdf
    • https://cdn.shopify.com/s/files/1/0447/3847/8229/files/cp5151_advanced_data_structures_and_algorithms_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0430/6770/3450/files/80277326073.pdf
    • https://cdn.shopify.com/s/files/1/0431/2042/7157/files/17303056082.pdf
    • https://cdn.shopify.com/s/files/1/0438/1822/1730/files/printable_bunco_score_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0437/7031/4903/files/vufitagefopuja.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_off000052dc.bin
eb08af048042765446c2ed2887ffc3a0a9129d2cd2ac92da97749cc318842194		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52DC 5360 bytes
font_01_sfnt_off00006502.bin
5336f909735a1c1af974b78e295850bdc0a4e58a71a9883a8373130b283a6767		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6502 10144 bytes

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