Malicious PDF — malware analysis report

Static analysis result for SHA-256 a23b27d19eda8574…

MALICIOUS

PDF

44.9 KB Created: 2020-08-14 16:33:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a0e03e5dc87db56b560504ce8c68c6f SHA-1: 2be972e68ab7217916543f2e16117aad3635e777 SHA-256: a23b27d19eda8574719a8a1a01243d9597e03476cbca10f8e192306e7d1d37a0
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a Microsoft Word for Mac 2019 download. The link leads to `https://ttraff.cc/pify?keyword=microsoft+word+for+mac+2019`, which is a known malicious redirector. The document also contains a large number of embedded links to PDFs hosted on Shopify, likely for SEO manipulation to improve search engine ranking for malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=microsoft+word+for+mac+2019
    • http://files.cccjackson.net/uploads/1/3/0/8/130874090/muzet-tawokunuwelujo.pdf
    • http://kejaju.sammamishanimalsanctuary.com/uploads/1/3/1/1/131163635/4089918.pdf
    • http://lasuva.jamesoakleyhumanist.org/uploads/1/3/1/0/131070858/bowenenurumetutuda.pdf
    • http://files.ridgewaygardendesign.co.uk/uploads/1/3/2/3/132303083/97e35b7a0ebe.pdf
    • http://timik.thestoneconstructioncoinc.com/uploads/1/3/2/8/132814930/1dc7ae3feca.pdf
    • https://cdn.shopify.com/s/files/1/0432/9698/1147/files/roxanakizikijoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/6567/8755/files/junowaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kevaziretojigadogikoranab.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4107173541.pdf
    • https://cdn.shopify.com/s/files/1/0437/1303/6439/files/93131504239.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bafewemuwidizisaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/1375/9395/files/39228361650.pdf
    • https://cdn.shopify.com/s/files/1/0440/7666/2949/files/vegasewo.pdf
    • https://cdn.shopify.com/s/files/1/0435/5604/4951/files/13617875632.pdf
    • https://cdn.shopify.com/s/files/1/0434/8336/5528/files/90409414218.pdf
    • https://cdn.shopify.com/s/files/1/0431/9245/1235/files/24472884561.pdf
    • https://cdn.shopify.com/s/files/1/0435/9992/1315/files/51483905207.pdf
    • https://cdn.shopify.com/s/files/1/0430/9375/4009/files/zukatogotelenofurodofodu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6757/files/79235512802.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_off00006f73.bin
71cf0516ef77283097ad6147dbf18444c4f86d6766e8755bb8e50393d3d2c471
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F73 5716 bytes
font_01_sfnt_off000082dc.bin
cc34a7510984c775f2ec079cb084599d0a5726602d85767ef58770a4c8afc0d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x82DC 10428 bytes