Malicious PDF — malware analysis report

Static analysis result for SHA-256 876a43e56cf8d3f5…

MALICIOUS

PDF

49.8 KB Created: 2020-08-06 20:32:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73b95b45a989fefdb066835d60f84d48 SHA-1: 2817be77ce843bfb0cd1b1f611503ef951bad855 SHA-256: 876a43e56cf8d3f5cccfef6bd78a8b462125e90f5b8439ffe55a72dca46a4ac8
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=national+skill+development+mission+pdf'. This indicates the document is designed to redirect users to malicious infrastructure. Additionally, a large number of external PDF links were found, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to distribute the malicious content. No scripts were extracted from this sample.

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=national+skill+development+mission+pdf
    • http://vixafep.cadrc.org/uploads/1/3/0/8/130874232/kuxanadad.pdf
    • http://files.menasgerovei.lt/uploads/1/3/1/8/131856771/jexexipawupap_walivev_duwukubikeluse_vubexogoxiziv.pdf
    • http://files.keepcalmandkickals.com/uploads/1/3/0/7/130776449/niviz.pdf
    • http://zakibuno.slateproject.org/uploads/1/3/0/7/130738531/vagaxu_webese.pdf
    • http://files.jcmcgiff.com/uploads/1/3/1/6/131636737/e02791e2772a733.pdf
    • https://cdn.shopify.com/s/files/1/0438/2107/2546/files/smash_1._1._4_patch_notes.pdf
    • https://cdn.shopify.com/s/files/1/0432/3665/5259/files/ravens_vs_jaguars_live_stream.pdf
    • https://cdn.shopify.com/s/files/1/0430/0403/5221/files/organismos_autotrofos_y_heterotrofos.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/9947253642.pdf
    • https://cdn.shopify.com/s/files/1/0436/1653/4685/files/31595902116.pdf
    • https://cdn.shopify.com/s/files/1/0434/8605/2518/files/47579511163.pdf
    • https://cdn.shopify.com/s/files/1/0429/9204/2137/files/pikuxuvidosawevebav.pdf
    • https://cdn.shopify.com/s/files/1/0429/6998/9279/files/15738873804.pdf
    • https://cdn.shopify.com/s/files/1/0431/3546/7669/files/51790827669.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78539107281.pdf
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/nugap.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/mubewari.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/spinning_instructor_manual.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_off00006f64.bin
ad3881f79bc4ffe39ecd73cc031dfb2debfe977a0e396477c28685f8fc4b317b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F64 5184 bytes
font_01_sfnt_off0000810b.bin
d65146020935953c5e976f579840f6c27f4112e30c5405b239f01607ff6d29ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x810B 10320 bytes
font_02_sfnt_off0000a495.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA495 16164 bytes