Malicious PDF — malware analysis report

Static analysis result for SHA-256 44288e39fb13bafc…

MALICIOUS

PDF

47.7 KB Created: 2020-08-30 20:31:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf9fc1d09cee203dfdc403a5384cc8ad SHA-1: c39e7c64fd0af9de12ca7344e9199cc10daa7308 SHA-256: 44288e39fb13bafc1e19ee9322aec3eee0d1fdfa04414f6ed1094362be242738
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The embedded URL points to 'ttraff.com', a known malicious redirector. The document body, though heavily obfuscated, contains a reference to the same URL, suggesting it is the primary lure. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=animal+jam+pixel+art
    • https://cdn.shopify.com/s/files/1/0435/6410/5886/files/bavatazilexi.pdf
    • https://cdn.shopify.com/s/files/1/0435/9720/1567/files/72336840275.pdf
    • https://cdn.shopify.com/s/files/1/0432/4366/7616/files/clothing_donation_value_guide_2018.pdf
    • https://cdn.shopify.com/s/files/1/0437/6576/0151/files/84286250079.pdf
    • https://cdn.shopify.com/s/files/1/0431/7079/1573/files/jowusis.pdf
    • https://static.usrfiles.com/ugd/b8c837_cdc77f2aa0844d95be48d2cfbe874bbd.pdf
    • https://static.usrfiles.com/ugd/a107db_26acbfd2d28542599b398e1924026d9b.pdf
    • https://static.usrfiles.com/ugd/6116da_772aab5ebbeb450b83d7b45f9d180576.pdf
    • https://static.usrfiles.com/ugd/74e9cf_ce520428fd5a4829a06da0e3b89bfa43.pdf
    • https://static.usrfiles.com/ugd/3b7182_7fdba0ad8b6342e0ab37cd5297874496.pdf
    • https://static.usrfiles.com/ugd/efb3f0_f3c91b8094cf4890bf27a2a5751f859f.pdf
    • https://static.usrfiles.com/ugd/7e0eb0_0cbb829218454b9589d726e3a40d3ae3.pdf
    • https://cdn.shopify.com/s/files/1/0430/0688/6051/files/42634790356.pdf
    • https://cdn.shopify.com/s/files/1/0438/4410/8453/files/letras_de_febrero_para_periodico_mur.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_off00007e76.bin
176363857904d083c540234ec27405a93a2c8a5f9e9cdb2bc0b78bdd5b94e69f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E76 4920 bytes
font_01_sfnt_off00008f17.bin
6611c142bfd3185667b80e8bb4d24598eb7e7a9cb02aec8e7e7d264ca1eb4f18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F17 10368 bytes

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