Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a85246167c2834c…

MALICIOUS

PDF

49.9 KB Created: 2020-08-29 18:45:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 562afe2047dc278d01e3cbcc8fee1f6d SHA-1: 8143c0c9d6e10cc528f9a39b13e76e4dfd9f4a99 SHA-256: 9a85246167c2834cebe9e12865167c76aa268abd64e470901e4ee5b2b8ff6709
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used for SEO poisoning to drive traffic to malicious sites. One of the embedded URLs, 'https://ttraff.com/wix?keyword=informatica+training+material+pdf', is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the primary purpose is to redirect users 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=informatica+training+material+pdf
    • https://static.usrfiles.com/ugd/70a38d_ca5d8aa2579d4ac6b1f2e83ee9cf7b00.pdf
    • https://static.usrfiles.com/ugd/b8c837_b2f34cd483544153a5171f0f43347676.pdf
    • https://static.usrfiles.com/ugd/b8c837_28815b5cef2c48d18acf3eb780d8372a.pdf
    • https://static.usrfiles.com/ugd/b8c837_c22b1b2e990942fdb564d53f60248541.pdf
    • https://cdn.shopify.com/s/files/1/0454/8090/2806/files/address_sequencing_in_computer_architecture.pdf
    • https://cdn.shopify.com/s/files/1/0431/7492/0347/files/pujakelajekasogelurepoxe.pdf
    • https://cdn.shopify.com/s/files/1/0461/9121/4743/files/61642089537.pdf
    • https://static.usrfiles.com/ugd/b8c837_13b34bbbbe6e40b4b1d2019e68380ccd.pdf
    • https://static.usrfiles.com/ugd/b8c837_1089c6a8614948b79ff195f8fdd50e4e.pdf
    • https://static.usrfiles.com/ugd/b8c837_f5c65ece9ec046d9ac3410bf74d08111.pdf
    • https://static.usrfiles.com/ugd/b8c837_8766446a74dd4406a44874d7c1faf0f0.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc7a68105eab4662814b48350b85eaa7.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/94767634029.pdf
    • https://cdn.shopify.com/s/files/1/0443/5968/0156/files/reported_speech_with_exclamatory_sentences.pdf
    • https://cdn.shopify.com/s/files/1/0438/2107/2541/files/denon_av_1612.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_off00008572.bin
69e5f3912c1c03fe330e7ccb20907ab65a73b218204e97f1f961a84ba4986f20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8572 5232 bytes
font_01_sfnt_off0000971d.bin
38fde136b7e2aec24789d81b6e347365a9d5960db17e51133f32b8f325a922ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x971D 10456 bytes

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