Malicious PDF — malware analysis report

Static analysis result for SHA-256 efb9d207c2f93667…

MALICIOUS

PDF

73.4 KB Created: 2020-09-01 17:49:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a32ee4ee40d369a6e91a79b95097746 SHA-1: 7afc54d97bd9e2e4d40f9b012e2910ceceabbcb5 SHA-256: efb9d207c2f936679235fde95f7c1fb350167c08ece78ef628beaa04f6e4c5f4
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to a redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Sportsbet ad 2019 the answer' and a URL that matches the critical heuristic firing. This suggests the document is designed to lure users to malicious sites through a link farm, likely for phishing or malware distribution.

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.ru/wix?keyword=sportsbet+ad+2019+the+answer
    • https://static.usrfiles.com/ugd/111c46_8446567e719e4723b501049e22b77296.pdf
    • https://static.usrfiles.com/ugd/5d2cf3_27f0f9a039684939aa799a01e31a2536.pdf
    • https://static.usrfiles.com/ugd/b8c837_14ddebc2a0234e2fa9c7f69742e845d5.pdf
    • https://static.usrfiles.com/ugd/0ebc1f_d2e43c6bff304903bb62eea1cf0af5db.pdf
    • https://cdn.shopify.com/s/files/1/0431/2632/5402/files/beautiful_intermediate_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0428/3082/3583/files/mhgen_hunting_horn_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/4578/1665/files/bobizuvapaxivuka.pdf
    • https://static.usrfiles.com/ugd/b8c837_21b5a5a532714f12850f8b1957d32f77.pdf
    • https://static.usrfiles.com/ugd/b8c837_abdb5ec905934ac38841caae9bb13ccf.pdf
    • https://static.usrfiles.com/ugd/51c472_a68dd7c4c6c14db18784ff3948a83421.pdf
    • https://cdn.shopify.com/s/files/1/0435/1331/5480/files/gopro_hero_7_black_spec_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/0582/1599/files/zenowebaje.pdf
    • https://cdn.shopify.com/s/files/1/0432/2705/4237/files/76771679137.pdf
    • https://cdn.shopify.com/s/files/1/0438/1478/1088/files/apostila_aula_de_violo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7388/8671/files/zivef.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_off0000df2a.bin
013277ca782d6e1fea21eb51411a8009b5d393fbd608cd3f820270dcfaf85b4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2A 5832 bytes
font_01_sfnt_off0000f303.bin
56b0b5dc5643d16e603aab7c311adddac33da098421efbcc186745d98f0d7495		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF303 11236 bytes

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