Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b75a11a313179cd…

MALICIOUS

PDF

42.8 KB Created: 2020-08-29 22:27:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06cba4e2d7c9fe566001325431d15c25 SHA-1: d3d5ade091d6317cdfebc1d5a258d17e8d9c43af SHA-256: 4b75a11a313179cdac18cb076f1964bcb64825a39dbdb8e2228af3242608b2ad
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK. The primary URL, https://ttraff.com/wix?keyword=the+complete+photo+guide+to+cake+decorating, is identified as a malicious redirector. This indicates the document's purpose is to lure users to potentially harmful websites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/wix?keyword=the+complete+photo+guide+to+cake+decorating
    • https://static.usrfiles.com/ugd/b8c837_51c0aed1538a47ecae3435bf7ab467a6.pdf
    • https://static.usrfiles.com/ugd/b8c837_498678ef71d249f4ab1483fe0aff4f5e.pdf
    • https://static.usrfiles.com/ugd/b8c837_169c9eff585f45d593665a06615ddecc.pdf
    • https://cdn.shopify.com/s/files/1/0429/5573/5203/files/gokakedokenusobatomuku.pdf
    • https://cdn.shopify.com/s/files/1/0428/5143/4659/files/26872378726.pdf
    • https://cdn.shopify.com/s/files/1/0431/3759/7591/files/kejebem.pdf
    • https://cdn.shopify.com/s/files/1/0438/7844/9307/files/cancionero_catolico_para_misa_con_acordes.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/bifoxigivemixadomuza.pdf
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/diwewepazimeb.pdf
    • https://cdn.shopify.com/s/files/1/0437/2443/9704/files/duxinadurerasobat.pdf
    • https://cdn.shopify.com/s/files/1/0431/8380/0474/files/hd_background_image_editing.pdf
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/55012250548.pdf
    • https://cdn.shopify.com/s/files/1/0432/9907/8304/files/1097561145.pdf
    • https://static.usrfiles.com/ugd/b8c837_123be7c729f94a5a80583c06f60cd9c1.pdf
    • https://static.usrfiles.com/ugd/09273f_a588cf455cdc47c5a0f9a11cb10e6669.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_off000069a4.bin
ab7d8427fa3df779a521ca91be6d59de89341c1d24dc84ffd11206809d50d256		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69A4 5324 bytes
font_01_sfnt_off00007b95.bin
9ac2bd6136fafc893be1fc01718bf0eca0732b94096f4b58010f7b88f6175e88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B95 10228 bytes

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