Malicious PDF — malware analysis report

Static analysis result for SHA-256 99e0d2ede6079ffe…

MALICIOUS

PDF

42.7 KB Created: 2020-08-16 00:55:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4cead18ba2c788182a3e3025f27dffaf SHA-1: 29532324c9c6f5740966d6baea4b123b23f4ca25 SHA-256: 99e0d2ede6079ffedf2b7b549ad894f1ba94852111684cad728d64fb7e631d7f
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector, disguised as an application form. The primary malicious URL is https://ttraff.ru/pify?keyword=mp+b.+ed+application+form+2019, which likely leads to further malicious content. The document body text, though heavily obfuscated, contains references to this URL and other PDF links, indicating a social engineering attempt to redirect the user 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.ru/pify?keyword=mp+b.+ed+application+form+2019
    • http://files.dregerracing.com/uploads/1/3/1/4/131453045/8d4573dd01b.pdf
    • http://files.tungbrushph.com/uploads/1/3/1/3/131379678/karisujizoxotir-napovujade-getolipujoz.pdf
    • http://files.en.sensoryum.ca/uploads/1/3/0/7/130738998/653aa6cb2e.pdf
    • http://pelega.dammodelmanagement.com/uploads/1/3/2/6/132681737/zesoz.pdf
    • http://files.connectivehealingservice.com/uploads/1/3/1/4/131438459/bb6761c.pdf
    • https://cdn.shopify.com/s/files/1/0431/1125/2132/files/48383444229.pdf
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/4445530212.pdf
    • https://cdn.shopify.com/s/files/1/0429/2971/7407/files/dizago.pdf
    • https://cdn.shopify.com/s/files/1/0430/6544/2455/files/29576215780.pdf
    • https://cdn.shopify.com/s/files/1/0440/7299/2918/files/performance_characteristics_of_centrifugal_pump.pdf
    • https://cdn.shopify.com/s/files/1/0431/7793/5004/files/79316040009.pdf
    • https://cdn.shopify.com/s/files/1/0434/0937/5383/files/93572574617.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/909040323.pdf
    • https://cdn.shopify.com/s/files/1/0432/7764/8027/files/pasar_archivo_a_word_online_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0433/5173/6488/files/45971211271.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_off000066f5.bin
fad3d23a72edc925ec6dee8127d484420c582981ef32644c04026e1beeadb0bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66F5 5784 bytes
font_01_sfnt_off00007a95.bin
fbf6a08acfb5b6fc31f3495bd973162d38bdff3223bd4a203f5e37aac14f9739		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A95 10408 bytes

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