Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7aab6f6129167fc…

MALICIOUS

PDF

36.8 KB Created: 2020-08-18 23:02:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 856c05c209570bffbc064e514413143d SHA-1: b02ea7e399d061cfce325c3b035b7fcc4511a4bf SHA-256: e7aab6f6129167fcca1732f7dada5064b7bd2cbd856d1ad25ff1fbb180d11f9e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a significant number of embedded URLs, with a critical heuristic firing for PDF_SEO_LINK_FARM indicating a link farm. One of the embedded URLs, https://ttraff.ru/pify?keyword=happy+anniversary+gif+images+free, is flagged as a malicious redirector. The document body contains garbled text alongside the URLs, suggesting it's not intended for human consumption but rather for search engine indexing or redirection.

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=happy+anniversary+gif+images+free
    • http://files.greenleafpsychological.com/uploads/1/3/1/4/131414743/4177014.pdf
    • http://files.groveparkstudents.com/uploads/1/3/0/9/130969580/5091743.pdf
    • http://files.dartmouthmountaineering.org/uploads/1/3/1/6/131606144/543486.pdf
    • https://cdn.shopify.com/s/files/1/0432/1551/9912/files/xarexeputivajuwozagi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8545/4757/files/96845513174.pdf
    • https://cdn.shopify.com/s/files/1/0428/9986/5756/files/insanity_workout_calendar_printable.pdf
    • https://cdn.shopify.com/s/files/1/0428/5651/3692/files/sunexulupalilunugaxov.pdf
    • https://cdn.shopify.com/s/files/1/0432/5697/1432/files/sutoxala.pdf
    • https://cdn.shopify.com/s/files/1/0434/5731/4983/files/amlodipino_dosis_maxima.pdf
    • https://cdn.shopify.com/s/files/1/0428/0349/5071/files/mumulamekikoluroroda.pdf
    • https://cdn.shopify.com/s/files/1/0432/2574/3521/files/alkalize_or_die_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/3579/4327/files/97526030799.pdf
    • https://cdn.shopify.com/s/files/1/0435/0060/1504/files/relexutunikekafa.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_off000046e4.bin
13e047980a3d82faccc28050821d7ec913febf5620cc7bfb3f64b016973c49ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46E4 4908 bytes
font_01_sfnt_off00005775.bin
0bcff011e09476fe721cba1451f48bc8c2810d6d8184a50135cff69d0d86b0c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5775 9696 bytes
font_02_sfnt_off0000787f.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x787F 4324 bytes

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