Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e30958f607454dd…

MALICIOUS

PDF

49.7 KB Created: 2020-08-19 16:51:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a5a0e049a99a6524a90d0574d5c933c SHA-1: 88dc38f97b8a9caa9c84bae44302c57d47b03f57 SHA-256: 7e30958f607454dd30948f7940dfd32a3ae6af0b711f0bf0031876f7dccfc744
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to a redirector service. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=complaint+form+template+for+employees', suggesting a lure to a malicious site. The presence of numerous PDF links and a malicious redirector indicates a phishing or social engineering attempt to lead the user to harmful 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=complaint+form+template+for+employees
    • http://files.f-fire.com/uploads/1/3/2/6/132681501/1433323.pdf
    • http://xevopix.sarahammerstad.com/uploads/1/3/1/4/131407535/nobodejetu.pdf
    • http://kotobu.xanderhouff.com/uploads/1/3/0/9/130969742/663823.pdf
    • http://punike.under--17--driving--lessons.co.uk/uploads/1/3/1/3/131379179/8603136.pdf
    • https://cdn.shopify.com/s/files/1/0432/3590/1602/files/dark_cloud_weapon_chart.pdf
    • https://cdn.shopify.com/s/files/1/0450/0160/5278/files/angina_estable_gpc.pdf
    • https://cdn.shopify.com/s/files/1/0440/8298/7158/files/36983315336.pdf
    • https://cdn.shopify.com/s/files/1/0448/0483/3441/files/download_german_books_for_learning.pdf
    • https://cdn.shopify.com/s/files/1/0433/9315/5237/files/20573043845.pdf
    • https://cdn.shopify.com/s/files/1/0438/0193/6033/files/internationalization_of_higher_education.pdf
    • https://cdn.shopify.com/s/files/1/0438/4486/2114/files/dafokikejufamonapokenuva.pdf
    • https://cdn.shopify.com/s/files/1/0434/2225/3205/files/jandy_aquapure_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/0193/0143/files/sezapetizesisesegejojoju.pdf
    • https://cdn.shopify.com/s/files/1/0431/7049/6672/files/politeness_principle_in_pragmatics.pdf
    • https://cdn.shopify.com/s/files/1/0433/0212/5733/files/23555911483.pdf
    • https://cdn.shopify.com/s/files/1/0429/7257/7946/files/44617467733.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_off00008575.bin
36b81b5e21c9432acf5043e26d678f02a301d0e63c8221e5873c89db04f8b8cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8575 5052 bytes
font_01_sfnt_off00009696.bin
859942dbf488f17c6fa8f069f485791633a5fd2422fe5acef4c8f66684e40d10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9696 10244 bytes

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