Malicious PDF — malware analysis report

Static analysis result for SHA-256 2606b81ad59456f2…

MALICIOUS

PDF

44.8 KB Created: 2020-07-21 03:34:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0fa114dae4d888982176b6f89c0d8a2f SHA-1: 7fccd4476a7765fcf569fe8f6110d9ef69710210 SHA-256: 2606b81ad59456f26daa76c8709dce0b161b6b68b10834f5f52596f835cd0249
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 PDF links, suggesting a link farm or SEO poisoning attempt. The presence of a 'download button' lure further supports the malicious intent. The primary malicious URL identified is ttraff.ru, which redirects the user to a potentially harmful destination. No scripts were extracted from this sample.

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/wb?keyword=1st%20class%20scoutmaster%20conference%20worksheet
    • http://files.allensteadham.com/uploads/1/3/1/8/131872017/f442287addb62e.pdf
    • http://files.seankalleyart.com/uploads/1/3/1/6/131606397/4312794.pdf
    • http://files.mooneyeshawaii.com/uploads/1/3/1/3/131398286/towok.pdf
    • http://files.drgordonself.com/uploads/1/3/1/0/131070144/8905244.pdf
    • http://files.moon
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48466687054.pdf
    • https://cdn.shopify.com/s/files/1/0431/3609/0267/files/nuvitafepiluwilugula.pdf
    • https://cdn.shopify.com/s/files/1/0430/5318/7221/files/notopuxo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2007/4663/files/taliviwuj.pdf
    • https://cdn.shopify.com/s/files/1/0429/2752/1948/files/jodorewemodegu.pdf
    • https://tupozubobusi.files.wordpress.com/2020/06/ditubojuteregomuv.pdf
    • https://kuvimuzatep.files.wordpress.com/2020/06/73963808336.pdf
    • https://muxenesan.files.wordpress.com/2020/07/36367161127.pdf
    • https://cdn.shopify.com/s/files/1/0434/8290/6789/files/nemipovekexewejalowovukib.pdf
    • https://cdn.shopify.com/s/files/1/0427/6027/4087/files/53884558616.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37638787324.pdf
    • https://cdn.shopify.com/s/files/1/0431/1079/3370/files/debeko.pdf
    • https://cdn.shopify.com/s/files/1/0432/3731/0632/files/zaruwubatura.pdf
    • https://cdn.shopify.com/s/files/1/0432/9691/5621/files/87163844151.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60801944673.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96226605796.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_off0000712c.bin
4587eb01648264c2da6e1f6015da1d87296015ba4dddcda9bd4b3de9f49ba65f
pdf-font-stream PDF embedded font (sfnt) at offset 0x712C 5068 bytes
font_01_sfnt_off0000824c.bin
991d5e6fb3f72f96a7e3d0cb057dd6e78898d52fd77606a2f835627ab32b9de0
pdf-font-stream PDF embedded font (sfnt) at offset 0x824C 10444 bytes