Malicious PDF — malware analysis report

Static analysis result for SHA-256 dde345bc37b89faf…

MALICIOUS

PDF

45.8 KB Created: 2020-08-03 04:42:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e927744ef55ca95c153ba0f297010cd SHA-1: 1f0387fd20651b31c6dc4f5b1ad22f7614de435d SHA-256: dde345bc37b89faf3003374ba0a501f06bb100b149bdcaf64ef1d0c97852d099
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. The document body, though heavily obfuscated, contains the text "Decocraft 2 1. 7 10" alongside the malicious URL, suggesting a lure to download or access something related to this term. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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/pify?keyword=decocraft+2+1.+7+10
    • http://files.posterworksgallery.com/uploads/1/3/2/7/132740623/606b5d2a5.pdf
    • http://mubemuwud.realgoodcomedy.com/uploads/1/3/1/3/131383613/pavodized_zupusodenix.pdf
    • http://files.allstarwrestlingaustralia.com.au/uploads/1/3/1/3/131398193/tavomi-wujejirale.pdf
    • http://files.medicollector.com/uploads/1/3/0/7/130738792/3103807.pdf
    • https://cdn.shopify.com/s/files/1/0438/4748/3552/files/18568619504.pdf
    • https://cdn.shopify.com/s/files/1/0433/9574/3907/files/lapajuvajiwumadex.pdf
    • https://cdn.shopify.com/s/files/1/0438/8575/6568/files/49060026649.pdf
    • https://cdn.shopify.com/s/files/1/0431/0024/2077/files/31252504870.pdf
    • https://cdn.shopify.com/s/files/1/0438/4486/2114/files/1989_bmw_325i_for_sale.pdf
    • https://cdn.shopify.com/s/files/1/0431/6381/1997/files/80755281354.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57790570823.pdf
    • https://cdn.shopify.com/s/files/1/0433/4452/7525/files/zanikepofodif.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/75278808376.pdf
    • https://cdn.shopify.com/s/files/1/0435/3641/6936/files/sememebovuwowowejariwan.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_off0000575e.bin
69f27a4d102e9aaa24a4eef554ed481c665bca55c2f3a07e004e67876371b688		 pdf-font-stream PDF embedded font (sfnt) at offset 0x575E 5100 bytes
font_01_sfnt_off000068dc.bin
10b942ddc0e5e087fbc641f02962b1b6705d389073df4818efb5b969aba46e8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68DC 14016 bytes
font_02_sfnt_off00009598.bin
8ce0575abc6f686af3c1393089841c21814f5c4838d5adbe0d649219e58da802		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9598 16064 bytes

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