Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1b86bbebccdc4c5…

MALICIOUS

PDF

45.5 KB Created: 2020-08-31 02:37:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5dc223097e4779c1c17bef19e831630b SHA-1: 11fef1ea44d573bf79d7f6cb4e821930aea41c2b SHA-256: e1b86bbebccdc4c5d44752e1913d4ee500f9ed3fced23c9e83bdb8659990f196
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=a+fractured+fairy+tale'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to external PDFs. The document body, though heavily obfuscated, contains the same redirector URL, suggesting a social engineering lure.

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=a+fractured+fairy+tale
    • https://static.usrfiles.com/ugd/9734e7_1fce561b24ee4bc2aeee4c3daaaf0660.pdf
    • https://static.usrfiles.com/ugd/de3d83_7fbb097f4d3443ae9e31e3972ceb19b8.pdf
    • https://static.usrfiles.com/ugd/eb6612_42775824b540476aa9abacf53fae90ce.pdf
    • https://static.usrfiles.com/ugd/221f3a_20f64c189a9241259554b3b5bccd0a23.pdf
    • https://static.usrfiles.com/ugd/b8c837_4ad506e16d354203ab18ad88794e9d11.pdf
    • https://cdn.shopify.com/s/files/1/0433/5550/4795/files/create_shared_email_template_outlook_2013.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/43340699850.pdf
    • https://cdn.shopify.com/s/files/1/0438/4305/9862/files/revista_muy_interesante_junior.pdf
    • https://cdn.shopify.com/s/files/1/0431/4143/1464/files/75807127534.pdf
    • https://static.usrfiles.com/ugd/b4a829_31b3aa3dc393438fa56839049d7e8dd0.pdf
    • https://static.usrfiles.com/ugd/60933b_0ffbcdebb83f476da147c849116ccfd8.pdf
    • https://static.usrfiles.com/ugd/66c878_99b5ead06a5146ca9b9cbd99c4c8a70c.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_5488e55ef8e3493ba6044e56d517630f.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_off000075e6.bin
59175d39fbb939345982d8f53e107b9c793149bca5754f5fef020213199ec37d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75E6 4928 bytes
font_01_sfnt_off000086bc.bin
46ab734f7306c9cfdc6c319c099ebcb9ffee836ba987c6e4c6223533bf085d36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86BC 10164 bytes

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