Malicious PDF — malware analysis report

Static analysis result for SHA-256 27fef1f039286a5c…

MALICIOUS

PDF

48.8 KB Created: 2020-08-02 11:05:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 316b58df5a9d1075affb8352b615109c SHA-1: d4b16fe70f14a38ca3293936cad6914179612e4b SHA-256: 27fef1f039286a5c35dec69b0ca2d37c18959a691c428d10462873eb1251fc65
128 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 pointing to 'ttraff.com'. This URL is presented to the user as a download for 'Ocean explorer map minecraft', a common lure. The PDF also contains a large number of embedded links to Shopify domains, likely part of an SEO link farm to improve search engine ranking for malicious content. The document body is heavily obfuscated but contains the same lure URL.

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.com/pify?keyword=ocean+explorer+map+minecraft
    • http://files.builtbyabel.com/uploads/1/3/1/6/131637606/mudaxikenesakafixovo.pdf
    • http://files.sylverdesign.com/uploads/1/3/1/3/131380177/f675ebf0.pdf
    • http://files.beautythebookandtheblog.com/uploads/1/3/0/7/130774990/5c0bbef413b74.pdf
    • http://files.ksschoolofdesign.com/uploads/1/3/2/7/132710717/tujojukiwixo_zogetenizov_kikofepasa.pdf
    • http://files.wibimassage.nl/uploads/1/3/2/6/132682913/8369571.pdf
    • https://cdn.shopify.com/s/files/1/0440/1476/4190/files/jukuvuzivupo.pdf
    • https://cdn.shopify.com/s/files/1/0440/5395/4710/files/vovugigifejadekidevumoge.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kamunikizesow.pdf
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/38573295437.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/depifekewusukatabija.pdf
    • https://cdn.shopify.com/s/files/1/0428/8099/1395/files/semekokajovonoponud.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kevaziretojigadogikoranab.pdf
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/25517688014.pdf
    • https://cdn.shopify.com/s/files/1/0436/6693/1862/files/4403437449.pdf
    • https://cdn.shopify.com/s/files/1/0430/5459/6250/files/xebisisujimapobewifumev.pdf
    • https://cdn.shopify.com/s/files/1/0434/1530/6405/files/28135403380.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_off000082ba.bin
e82d39ecd51fdc0121c11789d189d299a0a5d75e0c636f3703cb7a5e80d8241c
pdf-font-stream PDF embedded font (sfnt) at offset 0x82BA 5080 bytes
font_01_sfnt_off000093f9.bin
be742a193a810495aeb6b20b2167b6e55f879e5f1064807572df67da8c203398
pdf-font-stream PDF embedded font (sfnt) at offset 0x93F9 10020 bytes