Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9d1d920d376fb76…

MALICIOUS

PDF

48.4 KB Created: 2020-08-06 09:30:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89da5f11f76df276052977b50b718a44 SHA-1: 9452fbce708967a1fb0d8c533a381c4ee5105673 SHA-256: f9d1d920d376fb7643696f970298915f77d35f934f3602c8286667777aee0594
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=holy+bible+download+pdf'. This URL is presented within the document body as a lure for a 'holy bible download pdf'. The file also exhibits a PDF link farm heuristic, with numerous links pointing to Shopify-hosted PDFs, suggesting an attempt to obscure the malicious redirector. The presence of a 'download button' heuristic further supports the social engineering aspect of this attack.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=holy+bible+download+pdf
    • http://files.headandneckultrasound.com/uploads/1/3/1/4/131453555/gilagunozejikom-dewosofisa-borer.pdf
    • http://files.nextgenplacebos.org/uploads/1/3/1/4/131437513/dafbdd0975e.pdf
    • http://files.teamequistar.com/uploads/1/3/0/7/130776407/wujaloro.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5388/files/pajuwibidosuliwejisarugeb.pdf
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/bajusuxubekagumemepet.pdf
    • https://cdn.shopify.com/s/files/1/0435/8946/8328/files/81801572498.pdf
    • https://cdn.shopify.com/s/files/1/0432/4858/2820/files/noxobinezujurosi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9691/5621/files/28186191226.pdf
    • https://cdn.shopify.com/s/files/1/0434/3054/3512/files/76164194296.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pegumi.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/16147392792.pdf
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/jewuva.pdf
    • https://cdn.shopify.com/s/files/1/0429/3053/6614/files/t-_iv_transmission_fluid_autozone.pdf
    • https://cdn.shopify.com/s/files/1/0433/6055/1070/files/dijirowemol.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/66722885574.pdf
    • https://cdn.shopify.com/s/files/1/0431/2721/0144/files/daterinib.pdf
    • https://cdn.shopify.com/s/files/1/0436/7689/3334/files/11272201716.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_off00006793.bin
078c954b3c9df0a5c36d36905c37169c272c5f4328f1a0269bcfb74ee92909c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6793 5056 bytes
font_01_sfnt_off000078ef.bin
fc5ebba6b2da3ec637ccf7fcfbf0fa1e4a879a8c834a0ad09a24a2d1411e3439
pdf-font-stream PDF embedded font (sfnt) at offset 0x78EF 10688 bytes
font_02_sfnt_off00009dba.bin
74b4830f0cdd944423868677a74a3b21cefb8a46874f59b320a6189dbc0f2137
pdf-font-stream PDF embedded font (sfnt) at offset 0x9DBA 16488 bytes