Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb76a5a2c4c8fd70…

MALICIOUS

PDF

47.2 KB Created: 2020-08-24 00:41:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53e20cc82bf090d2691eb0e6bb5e0c6c SHA-1: 8da90a797d73fe8332f8f3b38abbcb1036ba9239 SHA-256: bb76a5a2c4c8fd7059ea6758a307dd52ad759d03b6e83bec426fee48d50ea806
128 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating an attempt to lead the user to a malicious site. The document body contains text related to 'cbse improvement exam 2020 online application form' and a call-to-action phrase, suggesting a lure for a phishing or scam attempt. The primary malicious IOC is the redirector URL, which is part of a link farm.

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.ru/pify?keyword=cbse+improvement+exam+2020+online+application+form
    • http://files.jacobs-midcentmod.com/uploads/1/3/1/0/131069899/mubedulili.pdf
    • https://cdn.shopify.com/s/files/1/0439/4126/5566/files/garuvipiwara.pdf
    • https://cdn.shopify.com/s/files/1/0436/5893/6473/files/zero_dark_thirty_subtitles.pdf
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/oss_bss_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/98869799061.pdf
    • https://cdn.shopify.com/s/files/1/0460/1230/1479/files/powerpoint_template_website_wireframe.pdf
    • https://cdn.shopify.com/s/files/1/0435/5437/3793/files/38403345818.pdf
    • https://cdn.shopify.com/s/files/1/0431/0948/2658/files/zomejebe.pdf
    • https://cdn.shopify.com/s/files/1/0435/8009/6667/files/school_closing_kansas_city.pdf
    • https://cdn.shopify.com/s/files/1/0436/6001/7814/files/7779044575.pdf
    • https://cdn.shopify.com/s/files/1/0432/9842/2934/files/a_thousand_years_guitar_chords.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_off000067c0.bin
5f264df16d2cc9534e2da0a298d28a21a4d037bd0d6032a250481a9165cf1e3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67C0 5608 bytes
font_01_sfnt_off00007abc.bin
a04eb0c42baa0aef5b15177dd49f83a21b0106e1b47ba3edfa71999fe9a0ac60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABC 11552 bytes
font_02_sfnt_off0000a0c1.bin
f1b67b057c823ac26c3a5146d2e7cca99b19c9e289a417d247549c271ee00f54		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0C1 3960 bytes

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