Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5987a725832c2bb…

MALICIOUS

PDF

51.0 KB Created: 2020-08-02 07:48:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d3594f7a9908afd299f223d66cb38fb3 SHA-1: 8c0e888cac2264f5c5d2b77ad724ed8326805dbd SHA-256: c5987a725832c2bb3a6685676082d7cc73806110c3bf7738cc911e3172a8ecf1
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external links, suggesting a link farm or phishing attempt. The presence of a 'download' button lure further supports this. The primary malicious URL identified is https://ttraff.ru/pify?keyword=p90x+free+download, which is used to redirect users to other content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=p90x+free+download
    • http://files.broadwaterdragons.com/uploads/1/3/1/1/131164358/govuzobenogikev.pdf
    • http://files.thebescourthouse.com/uploads/1/3/0/7/130738531/17335a8f52593.pdf
    • http://files.tahoportfolio.com/uploads/1/3/1/4/131437504/6ffefa7.pdf
    • http://files.lifitmoms.com/uploads/1/3/1/3/131383760/6abc6d2.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13170590630.pdf
    • https://cdn.shopify.com/s/files/1/0432/4796/0232/files/56950380589.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bewewolifokolugetu.pdf
    • https://cdn.shopify.com/s/files/1/0440/4012/6614/files/63269432200.pdf
    • https://cdn.shopify.com/s/files/1/0432/6647/4139/files/nuwekunufijoladuzaki.pdf
    • https://cdn.shopify.com/s/files/1/0432/0909/7384/files/20482538253.pdf
    • https://cdn.shopify.com/s/files/1/0437/8089/8973/files/97017223423.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26443777516.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5309/files/30314196961.pdf
    • https://cdn.shopify.com/s/files/1/0431/5480/0797/files/bazapagipudujegaguxuvi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8027/8426/files/24050770651.pdf
    • https://cdn.shopify.com/s/files/1/0430/8962/5250/files/58554464119.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/gewokabiba.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6939/files/64657167763.pdf
    • https://cdn.shopify.com/s/files/1/0435/5863/3631/files/lowes_trussville_al.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000724b.bin
e91a9215ffa1867bccab91218509b3e25a316889f565d06f835fd40ae9c2fa77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x724B 4840 bytes
font_01_sfnt_off000082cd.bin
65a30859c6574a9b9c9b9d61349d59a5e872fa6e77e15cacf5eda5993b06b0de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82CD 2244 bytes
font_02_sfnt_off00008cf7.bin
3d15ad6c188c10cdc293d7f9a93ca176482957d050ad95b7f50f85da91abd256		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF7 10528 bytes
font_03_sfnt_off0000b0d3.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0D3 4324 bytes

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