Malicious PDF — malware analysis report

Static analysis result for SHA-256 f59a70f9a6df6788…

MALICIOUS

PDF

47.9 KB Created: 2020-08-27 12:38:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ab7ca1ddfeff735ff60146d4eba12b1 SHA-1: 029dbe3e21f9aea2ba57fdfb9fcc5b328499947e SHA-256: f59a70f9a6df6788721fc464682b36362883f001aaf4250556a59cfcd98935c6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.com/pify?keyword=ventajas+de+la+entrevista+como+tecnica+de+recoleccion+de+datos`. The document body, though heavily obfuscated, also contains this URL and numerous other links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic. The primary intent appears to be redirecting users to malicious infrastructure.

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/pify?keyword=ventajas+de+la+entrevista+como+tecnica+de+recoleccion+de+datos
    • http://files.peter-de-groot.com/uploads/1/3/1/8/131871717/12f5fe1844.pdf
    • https://cdn.shopify.com/s/files/1/0437/6435/1130/files/25851039882.pdf
    • https://cdn.shopify.com/s/files/1/0434/8280/8472/files/94145944817.pdf
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/12409394702.pdf
    • https://cdn.shopify.com/s/files/1/0430/6957/1233/files/64104767477.pdf
    • https://cdn.shopify.com/s/files/1/0437/1221/7241/files/jasper_reports_tutorial_java.pdf
    • https://cdn.shopify.com/s/files/1/0427/6515/6508/files/nizowaborepeniwin.pdf
    • https://cdn.shopify.com/s/files/1/0448/4674/3709/files/zeros_of_a_function.pdf
    • https://cdn.shopify.com/s/files/1/0439/5322/5883/files/zudawidaxopisowopemaki.pdf
    • https://cdn.shopify.com/s/files/1/0435/3287/7976/files/bupawo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4997/4946/files/50024596788.pdf
    • https://cdn.shopify.com/s/files/1/0433/2853/6734/files/84115787259.pdf
    • https://cdn.shopify.com/s/files/1/0428/9311/5548/files/don_t_answer_me_lyrics_traduction.pdf
    • https://cdn.shopify.com/s/files/1/0434/6406/5188/files/analytical_chemistry_by_gary_christian_free_download.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_off00007c31.bin
8ae77b06c33a59e2958b2921411ae534b55524b908d0523fd5c4731cad90f4ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C31 5184 bytes
font_01_sfnt_off00008dc3.bin
117be8aeaa6e59cf9d73508710277f5a86a6217bfaadb0358a8f7606d4877420		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DC3 10492 bytes

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