Malicious PDF — malware analysis report

Static analysis result for SHA-256 d03b95606598ce82…

MALICIOUS

PDF

35.6 KB Created: 2020-08-26 08:43:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4062d6fc9bed6c7d35715962ed8c7339 SHA-1: 32cbafb3afa124b1b7c5b1ca0f3063be50ca5a54 SHA-256: d03b95606598ce828246d1a9773d976e8bf41c60ad59674f04bf889613acccda
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a lure related to an "Unturned resolution problem" and embeds a large number of external links. One of these links, https://ttraff.com/pify?keyword=unturned+resolution+problem, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on cdn.shopify.com, suggesting a link farm or redirection strategy. The presence of a malicious redirector indicates an attempt to lead the user to a harmful destination.

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=unturned+resolution+problem
    • http://files.diabetesobesity.org.uk/uploads/1/3/0/7/130738550/najojerinaxasi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0737/7567/files/sifunalezakinixovor.pdf
    • https://cdn.shopify.com/s/files/1/0431/3517/2770/files/cbse_bye_laws_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/4003/8302/files/phenomenological_approach_qualitative_research.pdf
    • https://cdn.shopify.com/s/files/1/0464/6918/5686/files/2382915986.pdf
    • https://cdn.shopify.com/s/files/1/0434/6655/5557/files/tudokifodenopojuxujivo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6187/8687/files/fetekipogus.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/dujenuzomarivilexojozudu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8162/1919/files/68457705542.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_off00004e72.bin
3f86623a3ed1b1ec35eed41325e07825300666402bf7db67144630afda59af3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E72 5024 bytes
font_01_sfnt_off00005f68.bin
268d1453ea691459d30f83d6fa6bdc7ff2acfaa46f4621e27e6a49def214fc80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F68 10112 bytes

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