Malicious PDF — malware analysis report

Static analysis result for SHA-256 abfb128945fd0aaa…

MALICIOUS

PDF

97.0 KB Created: 2020-07-10 11:53:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b7df590b6a065d4c5bdfe061d9b003a SHA-1: 59141bd88690207b7596a1c4f920fcc8794bb3b4 SHA-256: abfb128945fd0aaa678a702d2e1099711a0113ac26708d1d2bb25c28e13e212d
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a redirector link to 'ttraff.ru' and a link farm heuristic pointing to multiple PDF hosting domains. The document body, though heavily obfuscated, contains the target URL, suggesting a lure to download further content or navigate to malicious sites. The presence of these link farms and redirectors indicates a campaign focused on SEO poisoning or traffic redirection to malicious infrastructure.

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/wb?keyword=pediatric%20liver%20transplantation%20pdf
    • http://files.honeyofthehive.com/uploads/1/3/1/3/131398440/wosilet.pdf
    • http://files.566westadams.com/uploads/1/3/0/9/130969235/2acd35.pdf
    • http://files.nonails.net/uploads/1/3/2/7/132740618/f1cf812d8481.pdf
    • http://files.jacksherd.com/uploads/1/3/2/6/132695836/lelitoruvara.pdf
    • http://files.fccvideo.org/uploads/1/3/0/7/130738753/5191025.pdf
    • http://files.fustlerthefemalehustler.com/uploads/1/3/0/7/130739839/gaxiwoloxakutenuboj.pdf
    • https://dakenoxuw.files.wordpress.com/2020/06/33682316593.pdf
    • https://turajudodaj.files.wordpress.com/2020/07/padevuramaxilegabez.pdf
    • https://fuxofifusod.files.wordpress.com/2020/07/19314516691.pdf
    • https://terokowexo.files.wordpress.com/2020/06/55831587160.pdf
    • https://xepekuxilaju.files.wordpress.com/2020/07/wuwetafigogodexa.pdf
    • https://lisujivinixi.files.wordpress.com/2020/07/lisederukituxemosive.pdf
    • https://rexakufemuv.files.wordpress.com/2020/06/dedoxavofelawimagu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/titigabibuzumazavuxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lojuxefututa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75609531209.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dagezaluvonanapukinuwit.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/salelixakibikiziz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75901524911.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_off00013588.bin
5d49154bba1b18ad93cf367344d8e40bde9b710f29753a743f06839bfe1bdee1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13588 4996 bytes
font_01_sfnt_off00014689.bin
01ac6648c833d44e5705818f993784497855d3901a3584d120e2715a1c9445cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x14689 15600 bytes