Malicious PDF — malware analysis report

Static analysis result for SHA-256 5183c682dc2a0444…

MALICIOUS

PDF

54.3 KB Created: 2020-08-28 04:32:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c9bfb63a9e9ed57016365dda907697c SHA-1: 36d8da0ac105c98a387d394f2f05f40c018ed537 SHA-256: 5183c682dc2a0444d5473c1a630a6eeeaa25924663d59277e5f93279f479e30a
150 Risk Score

Malware Insights

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

This PDF file exhibits malicious behavior through a critical heuristic firing for a redirector link, pointing to 'ttraff.me'. Additionally, it contains a large number of external PDF links hosted on Shopify, indicative of a link farm. The ML classifier strongly supports the malicious verdict. The primary attack pattern involves leveraging these links, likely for SEO manipulation or to distribute further malicious content.

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.me/pify?keyword=staying+strong+365+days+a+year+pdf+espa%25C3%25B1ol
    • http://files.suigenerisstationers.com/uploads/1/3/1/6/131637679/4363144.pdf
    • http://zerupiw.ambiancegardendesign.com/uploads/1/3/1/3/131380729/kazopuje.pdf
    • http://files.amberemson.com/uploads/1/3/1/4/131406321/xinumuvad.pdf
    • http://niwowig.hubbellbros.com/uploads/1/3/2/3/132303382/69ddc51a94863cb.pdf
    • https://cdn.shopify.com/s/files/1/0432/0477/1999/files/bixamujibarowurixaguraji.pdf
    • https://cdn.shopify.com/s/files/1/0431/0358/4409/files/57090498128.pdf
    • https://cdn.shopify.com/s/files/1/0463/1858/3973/files/43892945623.pdf
    • https://cdn.shopify.com/s/files/1/0441/2784/6552/files/baccalaurat_en_gnie_informatique_universit_laval.pdf
    • https://cdn.shopify.com/s/files/1/0430/0262/6202/files/screening_colonoscopy_coding_guidelines_2019.pdf
    • https://cdn.shopify.com/s/files/1/0431/1885/4306/files/7257073294.pdf
    • https://cdn.shopify.com/s/files/1/0430/7025/9357/files/lukinanufugijegojab.pdf
    • https://cdn.shopify.com/s/files/1/0435/5329/2440/files/pezezilomujidixiras.pdf
    • https://cdn.shopify.com/s/files/1/0428/4982/9023/files/zinebujunevapasuku.pdf
    • https://cdn.shopify.com/s/files/1/0435/4048/0155/files/data_has_already_been_sent_to_output_mpdf.pdf
    • https://cdn.shopify.com/s/files/1/0434/6124/7138/files/kogid.pdf
    • https://cdn.shopify.com/s/files/1/0430/7157/0069/files/suxemizomuxulivigi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7248/6564/files/73138055257.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e9f.bin
1667ea0008fb6f07e693932b3307d93c2044e18795cdce2f36e9766807d7ea20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9F 6068 bytes
font_01_sfnt_off00008303.bin
fa00ca2efb3740422adce526fcbaa5037a21e39b9482affa9e7d95016e3f9ad0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8303 2528 bytes
font_02_sfnt_off00008e33.bin
7fc865721768134d91d114b8264218dc7c5b3567adea1ba7a2c77fc886717774		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E33 10632 bytes
font_03_sfnt_off0000b27d.bin
49230a07578f2a0b108554ff1d47b1cb24b8f8081254bad551c0ce72ea05e0a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB27D 16544 bytes

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