Malicious PDF — malware analysis report

Static analysis result for SHA-256 c09831affc06aad3…

MALICIOUS

PDF

47.7 KB Created: 2020-08-12 19:11:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44fb8d049d541345d9ec8098e53ceddc SHA-1: b2c68d09f391e8fd33c1942965b3818a67101ed7 SHA-256: c09831affc06aad31ff020e014acb006b393d7d88435351cf3c7b172f3edd4d8
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for a PDF redirector link pointing to ttraff.ru. Additionally, another critical heuristic detected a large PDF link farm, with many links hosted on cdn.shopify.com and other domains. The document body contains the URL 'https://ttraff.ru/pify?keyword=anything+goes+beaumont+script+pdf', which is likely used to redirect users to malicious content. The presence of numerous links suggests a strategy to distribute malware or conduct phishing attacks.

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=anything+goes+beaumont+script+pdf
    • http://files.stillpointsf.com/uploads/1/3/0/7/130738993/8998904.pdf
    • http://sipujobi.oldgoatlures.com/uploads/1/3/1/4/131453134/kufusakowe.pdf
    • http://files.yeshairextensions.com/uploads/1/3/2/6/132695200/nokejub-wejebopivezefo-zovameki.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/giluvijobavaxitaridupidu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6271/4780/files/che_guevara_biography_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0436/1512/5662/files/sidat.pdf
    • https://cdn.shopify.com/s/files/1/0430/8264/5665/files/98265250440.pdf
    • https://cdn.shopify.com/s/files/1/0436/2059/7923/files/datevofizepegur.pdf
    • https://cdn.shopify.com/s/files/1/0429/1959/2099/files/tidazuwirotasalazo.pdf
    • https://cdn.shopify.com/s/files/1/0439/4686/8891/files/pdf_file_editor_free_download_software.pdf
    • https://cdn.shopify.com/s/files/1/0434/8284/1250/files/adobe_acrobat_editor_online.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tolipokegegami.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67331216746.pdf
    • https://cdn.shopify.com/s/files/1/0432/9691/5621/files/litabefifa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4519/9784/files/timegewo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/gufigos.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_off00006dfb.bin
a7aaa55436d0583a17af8d4c83dee5bd02f838824524e938e0b5a70fa75b80da
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFB 5648 bytes
font_01_sfnt_off00008102.bin
f3afc99709a0810d97bbe1b071f44a8175f497cddca19e9147030d09801c2b9f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8102 10148 bytes
font_02_sfnt_off0000a3d2.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3D2 4324 bytes