Malicious PDF — malware analysis report

Static analysis result for SHA-256 2172e28be8983d02…

MALICIOUS

PDF

222.4 KB Created: 2020-08-25 03:17:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49e9806ab09d7818b8c4d7fb6a3b970b SHA-1: c5f63d47d96c449343610386f0ec7d8ce34bbfe3 SHA-256: 2172e28be8983d0207143b9d8e452d670faf596c3c76e9ea09346aa46eee64e0
68 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=infective+endocarditis+treatment+guidelines'. The document body, though heavily obfuscated, contains this same URL, suggesting it's the primary lure. The heuristic 'SE_URGENCY_LURE' further supports the phishing pretext by indicating the presence of urgency language within the document, aiming to prompt immediate user interaction with the malicious link.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=infective+endocarditis+treatment+guidelines
    • http://files.rycroftlabradors.com/uploads/1/3/2/6/132680813/zisojiva_gorawuzi_rodewatadiwa.pdf
    • http://files.asnmassage.org/uploads/1/3/1/1/131164153/1423542.pdf
    • https://cdn.shopify.com/s/files/1/0434/3873/5512/files/99522530811.pdf
    • https://cdn.shopify.com/s/files/1/0431/0600/9255/files/buxavugodove.pdf
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/check_jupyter_version.pdf
    • https://cdn.shopify.com/s/files/1/0437/8358/5949/files/98927473720.pdf
    • https://cdn.shopify.com/s/files/1/0433/7991/6963/files/35748742394.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3487/files/pemaxotevofigajefokikida.pdf
    • https://cdn.shopify.com/s/files/1/0433/7798/3653/files/motonopa.pdf
    • https://cdn.shopify.com/s/files/1/0435/5332/5215/files/risex.pdf
    • https://cdn.shopify.com/s/files/1/0438/9378/4728/files/jepigofililoz.pdf
    • https://cdn.shopify.com/s/files/1/0451/7157/2885/files/html_to_php_page_break.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8913/files/nuped.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_off00032a74.bin
541c46322f4f80b8d98cac847fee3b90cd0b9898c26f07646daf66eb2bc583f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32A74 5340 bytes
font_01_sfnt_off00033c83.bin
f1b2a4896e2699b5c38e80920858d005642cf28b81bc05f89cd3379f022cacf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33C83 14784 bytes

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