Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fab3772a3bef9d4…

MALICIOUS

PDF

40.9 KB Created: 2020-08-07 18:28:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b77d62aafb707a58e20c0d84cda2c25b SHA-1: a563a23cad1ef7c547b2022c1818f5e08113df8f SHA-256: 7fab3772a3bef9d42582980a59d80bc6fa5fe831a742e2b98ae1604cd4777742
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a cricket schedule, designed to lure users to a malicious site. The heuristic firings indicate the PDF is a link farm and contains a malicious redirector. The embedded URL leads to a known malicious redirector, and the document body contains the lure text and the malicious URL.

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.com/wb?keyword=cricket%20world%20cup%202019%20schedule%20pdf%20ist
    • http://files.ellenwieser.com/uploads/1/3/1/4/131406807/7811730.pdf
    • http://files.flalaw.pro/uploads/1/3/0/7/130738894/razorosig-jonovokarizomu.pdf
    • http://files.silkroadresearchcenter.org/uploads/1/3/1/4/131438708/1bf520.pdf
    • http://files.newcastlememorialarena.com/uploads/1/3/1/4/131453486/770cc0880de4c0.pdf
    • https://cdn.shopify.com/s/files/1/0430/9532/6887/files/sonuza.pdf
    • https://cdn.shopify.com/s/files/1/0431/5611/1520/files/zeviretukokanifujowiwopun.pdf
    • https://cdn.shopify.com/s/files/1/0439/3231/9899/files/doraemon_story_of_seasons_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19252536586.pdf
    • https://cdn.shopify.com/s/files/1/0431/2596/4957/files/62151062624.pdf
    • https://cdn.shopify.com/s/files/1/0439/2953/4632/files/firefox_developer_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/1991/0811/files/96845955676.pdf
    • https://cdn.shopify.com/s/files/1/0429/6749/8911/files/sulakakomaj.pdf
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/reference_letter_for_immigration_marriage.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_off00004d1c.bin
f63be5b9c86b5cd71557db147f07739375fc54beeefe3ae93ad61f01e914e8ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D1C 5472 bytes
font_01_sfnt_off00005fea.bin
763a0b76609f9dcc6e53fd878ce0e3e256490026de460564ebd8827b5865b29d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEA 12896 bytes
font_02_sfnt_off00008899.bin
781b9fae2fb9201b4a05d2041fea553bb2973f1d011ab9c51e3326c72e342c60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8899 4324 bytes

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