Malicious PDF — malware analysis report

Static analysis result for SHA-256 c32b8ce72f0095de…

MALICIOUS

PDF

41.6 KB Created: 2020-09-09 12:00:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e4fc5a26be72f66312452bab26e8210 SHA-1: 41021aa64a6789569ee586a2e8354e5ae4266aea SHA-256: c32b8ce72f0095dec6b87318ce07927e4caa293344bcd5883aa0364200a0a583
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.link/wix?keyword=odometer+discrepancy+form+ga', is flagged as a malicious redirector. The document body, though obfuscated, also contains this URL and other links to 'static.usrfiles.com', suggesting a lure to a malicious site.

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.link/wix?keyword=odometer+discrepancy+form+ga
    • https://static.usrfiles.com/ugd/c75f60_8f6b7b404c6845e8a4659abc0076bd0e.pdf
    • https://static.usrfiles.com/ugd/0251f0_2551bbc695364c94a495f891803b6e29.pdf
    • https://static.usrfiles.com/ugd/bb13a2_394bbc7b42184514a802b66e6e6e040d.pdf
    • https://static.usrfiles.com/ugd/cafc24_9f4a2a64e0584ab985f09508870b6a8b.pdf
    • https://static.usrfiles.com/ugd/12dc78_ef6b84e05dd34bbebfab2cb78644ad75.pdf
    • https://static.usrfiles.com/ugd/7a11b0_f0c39cf28725460fbacc8de8bd220486.pdf
    • https://static.usrfiles.com/ugd/c1de29_b99e527b4845474187af2e373ab9e8f0.pdf
    • https://static.usrfiles.com/ugd/2813e2_9abc1f8af29a43a0b4a6c304ed4e3eae.pdf
    • https://static.usrfiles.com/ugd/d2759c_78e5eeaf0d244004bc68ee8fb31d4132.pdf
    • https://static.usrfiles.com/ugd/f34323_6fd609fe5f05424490c76cd207229082.pdf
    • https://cdn.shopify.com/s/files/1/0435/1678/8900/files/nojosaniwetuba.pdf
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/zowonapo.pdf
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/wow_classic_silk_bag.pdf
    • https://cdn.shopify.com/s/files/1/0431/1298/8821/files/accredo_specialty_pharmacy_prior_auth_forms.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_off00006301.bin
56561381ac730f2bc0706e3f0d9e84231f1b0b3fe3a499ec77052844ea764c6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6301 5572 bytes
font_01_sfnt_off000075e8.bin
a289284be858c7096d863af7597cac03c6a87a596650061c557d3964ef878b8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75E8 10484 bytes

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