Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aac0284884a5228…

MALICIOUS

PDF

41.3 KB Created: 2020-08-26 19:33:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fed4f7d5f20c0467871bac1f8f83d300 SHA-1: 432055f651f1212c1d448ffe648c8bc5b42b4fe4 SHA-256: 4aac0284884a52280a312dfa9d4a0486900b42a521c9fab8c70b60ff6635b858
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, with one pointing to a known malicious redirector (ttraff.me). The document body and embedded artifacts suggest it was generated by wkhtmltopdf, and the heuristics indicate a "PDF_SEO_LINK_FARM" pattern, suggesting an attempt to manipulate search results or distribute malicious content through a large number of links. The primary malicious URL is https://ttraff.me/pify?keyword=flipped+by+wendelin+van+draanen+read.

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.me/pify?keyword=flipped+by+wendelin+van+draanen+read
    • http://kekuno.quiltsbyj.com/uploads/1/3/1/3/131384424/bovodajekitud.pdf
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/mirezofekejuvadudirulo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0574/7108/files/53882482220.pdf
    • https://cdn.shopify.com/s/files/1/0431/3848/2337/files/tafunipumero.pdf
    • https://cdn.shopify.com/s/files/1/0432/2168/0283/files/kufuvivofawarod.pdf
    • https://cdn.shopify.com/s/files/1/0434/7104/4770/files/82718638408.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/wigazinowewuzusuzoketesi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0088/9507/files/wovurejotib.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9670/files/xepamofe.pdf
    • https://cdn.shopify.com/s/files/1/0439/4264/1832/files/bringing_them_home_report.pdf
    • https://cdn.shopify.com/s/files/1/0438/9987/9576/files/liquido_amniotico_meconial.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_off00006524.bin
9a4cc967095c1f8168f3edf395965d10260dd3d17b19a46f9689dd33f5fd1ea5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6524 5124 bytes
font_01_sfnt_off000076b3.bin
20fcb0065ea9893132c7e2ab634e56e567edef27938a59885db90600ec52ae6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76B3 9872 bytes

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