Malicious PDF — malware analysis report

Static analysis result for SHA-256 c59ea6cfc4b600f1…

MALICIOUS

PDF

63.1 KB Created: 2020-08-07 20:53:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73a46ad7d81f4407b931d0cf18eb6186 SHA-1: cf9717b62d46050346be3d9ffbd409496370694f SHA-256: c59ea6cfc4b600f1865ce52873b9c7c79310cf32698df24f7a64023d2dc7a20c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.com) and then to various PDF files hosted on Shopify and other domains. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=natural+language+processing+pdf', suggesting a lure related to 'natural language processing' to drive traffic to malicious infrastructure. The heuristic firings confirm the presence of malicious redirector links and a link farm.

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.com/pify?keyword=natural+language+processing+pdf
    • http://files.twopsinapodohio.com/uploads/1/3/1/0/131070993/wikiparuzomareg.pdf
    • http://files.creativeripplesbylisa.com/uploads/1/3/2/8/132814071/9389569.pdf
    • http://files.paterpaulus.us/uploads/1/3/1/3/131383982/tawuzejuz.pdf
    • http://files.blvdpub.com/uploads/1/3/1/4/131411539/pakigeb.pdf
    • http://files.joyohagwu.com/uploads/1/3/2/6/132681368/mafemenozakaleboz.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/33656464742.pdf
    • https://cdn.shopify.com/s/files/1/0432/1440/5793/files/38047336750.pdf
    • https://cdn.shopify.com/s/files/1/0438/3821/0205/files/puxisowavemanalojurake.pdf
    • https://cdn.shopify.com/s/files/1/0428/4963/2412/files/89119408401.pdf
    • https://cdn.shopify.com/s/files/1/0432/9000/1572/files/70127393759.pdf
    • https://cdn.shopify.com/s/files/1/0428/4032/6300/files/zelumab.pdf
    • https://cdn.shopify.com/s/files/1/0435/5896/1315/files/jeriguzixivinalosuxudel.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28821374719.pdf
    • https://cdn.shopify.com/s/files/1/0434/3165/7638/files/pesiveboxopitan.pdf
    • https://cdn.shopify.com/s/files/1/0431/9110/7742/files/usar_el_cerebro_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0434/9755/4084/files/48173490568.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_off0000b3a1.bin
47b7af6b4838cb01cbdb5caae30a6c7c5d3c2ab5fe913028a8c3877ffd08bfb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3A1 5292 bytes
font_01_sfnt_off0000c5b8.bin
769efabd8ff08467326cfe05084966f9fa1d612360b28fa9b73bb78ddbdab9cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5B8 13356 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.