Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3bfe16eb2477d85…

MALICIOUS

PDF

61.6 KB Created: 2020-08-03 05:39:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9781018a40f16683b6e59c1b42419f5a SHA-1: f25bb4323b728626d700d3b205c84e44a3b8827c SHA-256: d3bfe16eb2477d85e99d9bf86ccdb02f39057899729a15fa5bb8154e4ce5613b
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/pify?keyword=binary+tree+implementation+python'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a link farm further supports the malicious intent, aiming to obscure the final destination or increase the chances of a click. The ML classifier also strongly flagged this PDF as malicious.

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/pify?keyword=binary+tree+implementation+python
    • http://files.laharpelibrary.com/uploads/1/3/1/4/131453248/31b928dd5f39b91.pdf
    • http://files.burnsidecenter.com/uploads/1/3/0/9/130969080/jikamupivazuluges.pdf
    • http://files.devotie.com/uploads/1/3/1/8/131857758/banilowujumu-korutakewuxe.pdf
    • http://files.miccheckentertainment.co.uk/uploads/1/3/1/3/131383483/b3243d0c131ab.pdf
    • https://cdn.shopify.com/s/files/1/0427/8393/2582/files/nerukinovavul.pdf
    • https://cdn.shopify.com/s/files/1/0433/8873/1546/files/98507640899.pdf
    • https://cdn.shopify.com/s/files/1/0430/7160/2849/files/37360440316.pdf
    • https://cdn.shopify.com/s/files/1/0435/9304/0029/files/3576953516.pdf
    • https://cdn.shopify.com/s/files/1/0434/0200/2595/files/tejubejasupusomefoveb.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/vamoval.pdf
    • https://cdn.shopify.com/s/files/1/0432/1568/3744/files/74299819682.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/68656182693.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/taridulozomoxekolakinuku.pdf
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/94189389383.pdf
    • https://cdn.shopify.com/s/files/1/0438/8516/6760/files/nawedumogaselewire.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_off0000a648.bin
d8f958c5079244479b430aa1625014b86c6a6c8c707f9fa91149b010662cb0ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA648 5032 bytes
font_01_sfnt_off0000b73f.bin
bd958a771000af02e4311a6df5c3353b163a03d05970eba6954e81d16a31dad5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB73F 15964 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.