Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd1e78551f129323…

MALICIOUS

PDF

33.9 KB Created: 2020-08-29 18:38:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61c586884fbcfddc8f4d040519ae8aae SHA-1: 88f08ac19f34fb5f5be349097791725c6499331f SHA-256: dd1e78551f129323c54382b493f35c03948bcfbc7d60a88b611d9776151ecc4c
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/wix?keyword=micologia+medica+basica+bonifaz+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The file also exhibits characteristics of a PDF link farm, with numerous embedded URLs, further supporting the malicious intent of distributing links to potentially 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.com/wix?keyword=micologia+medica+basica+bonifaz+pdf
    • https://static.usrfiles.com/ugd/b8c837_357b1d639daf40a4a9ae5e99878a32ad.pdf
    • https://static.usrfiles.com/ugd/b8c837_a15f9d6ea05a441faa144be58545e69b.pdf
    • https://static.usrfiles.com/ugd/b8c837_04f5f48ba3c547f8bc0aa6758eec0ba4.pdf
    • https://static.usrfiles.com/ugd/b8c837_a7980357f7b346768abc43f292b356c5.pdf
    • https://cdn.shopify.com/s/files/1/0432/7686/1606/files/oboe_and_bassoon_duets.pdf
    • https://cdn.shopify.com/s/files/1/0434/3149/3784/files/65326096272.pdf
    • https://cdn.shopify.com/s/files/1/0430/4191/5042/files/86140398739.pdf
    • https://cdn.shopify.com/s/files/1/0443/8884/3686/files/cayaponia_tayuya.pdf
    • https://static.usrfiles.com/ugd/b8c837_ba3326000c4c431b9463f4676d64e347.pdf
    • https://static.usrfiles.com/ugd/834936_bc2d7d179f75475085b2ce2623e6896a.pdf
    • https://static.usrfiles.com/ugd/b8c837_8f15cece40b245d68ae428b28317248d.pdf
    • https://static.usrfiles.com/ugd/b8c837_b3d1e5b9c4dc424298829ba826c98630.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_off000043c4.bin
1717eab44c04a79a0e9646188760357cc709bca885cc8a221c2b6636748609b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43C4 5572 bytes
font_01_sfnt_off000056b2.bin
867981fd8186d760a46eb2bbdc902db652ec18e507201c85943ae57266de0673		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56B2 10568 bytes

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