Malicious PDF — malware analysis report

Static analysis result for SHA-256 af1422b5425147ee…

MALICIOUS

PDF

50.3 KB Created: 2020-08-08 17:06:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c6dade624cb6f117dfb02fd19bf96a3 SHA-1: 74ab59bb65926d3d936c9b06d30c782caf555cab SHA-256: af1422b5425147eecfce6ad9725a4a40b17832fead74c648f1019524fa6227dc
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, which leads to a link farm of other PDFs hosted on Shopify. The primary malicious link is ttraff.cc, which redirects to a URL containing 'oracle mathematical reasoning pdf' as a keyword. The presence of a link farm suggests an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes.

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.cc/pify?keyword=oracle+mathematical+reasoning+pdf
    • http://files.theoffbeattraveler.com/uploads/1/3/0/7/130775515/lefadejivewipaxibet.pdf
    • http://files.afterdivorce.net/uploads/1/3/1/6/131637169/6093082.pdf
    • http://files.saintleoresidencelife.com/uploads/1/3/0/7/130739557/1241896.pdf
    • https://cdn.shopify.com/s/files/1/0428/9540/9311/files/jokujozarit.pdf
    • https://cdn.shopify.com/s/files/1/0433/6674/4216/files/kanzen_jisatsu_manyuaru_english.pdf
    • https://cdn.shopify.com/s/files/1/0434/8982/0836/files/icao_annex_10_vol_2.pdf
    • https://cdn.shopify.com/s/files/1/0428/2790/7239/files/9857967809.pdf
    • https://cdn.shopify.com/s/files/1/0429/9456/5271/files/prescott_microbiology_9th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/2814/3510/files/rizefe.pdf
    • https://cdn.shopify.com/s/files/1/0434/4066/8838/files/89429771826.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/zepisefaxekum.pdf
    • https://cdn.shopify.com/s/files/1/0437/4714/7928/files/degebudowora.pdf
    • https://cdn.shopify.com/s/files/1/0431/9028/8535/files/ruwomosutakedirenawisamiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/5639/7464/files/85571207616.pdf
    • https://cdn.shopify.com/s/files/1/0431/0152/0023/files/54486477363.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_off00004ebf.bin
4c65752a5d4511e812fd59bfc77b317aec2639a3515138caed1bf4232e792a6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EBF 5596 bytes
font_01_sfnt_off00006191.bin
2c6adfd70b030580772d14cb21161b32df51a2aebea8ad0205065278ad9d9ed4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6191 10844 bytes
font_02_sfnt_off00008325.bin
e5a3e72211014f1f528a596762267bd8523c8f0966a24141aff8dfab3f119a36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8325 10176 bytes
font_03_sfnt_off0000a655.bin
3c260b720ba846d87de456033c05b94d326aa9f09b16dabc19f167f97f6ae321		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA655 16204 bytes

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