Malicious PDF — malware analysis report

Static analysis result for SHA-256 544daca67c553af3…

MALICIOUS

PDF

35.5 KB Created: 2020-08-13 23:50:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53842816946b456766e94709b1f27e82 SHA-1: 10251557853269d8b9549bce1f6faf82b74da01f SHA-256: 544daca67c553af3749b4d81af8e368c570f5696ffdf14bfc830eec4ea53c514
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, disguised as a 'science lab safety quiz answers' page. This heuristic firing indicates a social engineering attempt to trick users into navigating to a potentially harmful site. The document body also contains the same URL, reinforcing the lure.

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=science+lab+safety+quiz+answers
    • http://files.islamtoyhwh.com/uploads/1/3/0/7/130776601/79682.pdf
    • http://files.ardenemil.com/uploads/1/3/0/8/130813409/niditavurufoji_mejana.pdf
    • http://files.hensleyvoicestudio.com/uploads/1/3/0/7/130775063/sifitotukukino_pezisisububipe_fulivosajur_xojedagip.pdf
    • http://remixovip.porkypink.com/uploads/1/3/1/6/131636974/476e36f.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4658/files/87405872005.pdf
    • https://cdn.shopify.com/s/files/1/0435/3690/8439/files/naguxatosopametegis.pdf
    • https://cdn.shopify.com/s/files/1/0431/4464/2715/files/fobanofavaviz.pdf
    • https://cdn.shopify.com/s/files/1/0432/6139/5102/files/fizemilijamepesavu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6377/1293/files/lujakalidisigipatokuj.pdf
    • https://cdn.shopify.com/s/files/1/0434/6124/7129/files/fuwupijaselefuvapajix.pdf
    • https://cdn.shopify.com/s/files/1/0431/1053/1238/files/how_to_uninstall_office_on_mac.pdf
    • https://cdn.shopify.com/s/files/1/0432/0185/5646/files/42752077787.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovetutokukike.pdf
    • https://cdn.shopify.com/s/files/1/0431/4107/1016/files/wajisiselik.pdf
    • https://cdn.shopify.com/s/files/1/0431/4926/3004/files/39362492290.pdf
    • https://cdn.shopify.com/s/files/1/0441/3744/7576/files/pennzoil_oil_filter.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_off00004d62.bin
ea389999fdc051210e8ca0c34ded8ee94f2e161d674e0fbb2209797ab6b8b313		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D62 5488 bytes
font_01_sfnt_off00006037.bin
712485358f3329ec84ba50bce32c9d3ee0891f6bb8bb8d8547e770d6b8bd82b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6037 9680 bytes

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