Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed36209a6d92c7dc…

MALICIOUS

PDF

50.6 KB Created: 2020-08-31 15:08:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7b6622cbb397c5fabcf4368d92f292e SHA-1: 5d75251a864149cefec31cbfec2c7ccfd732a65a SHA-256: ed36209a6d92c7dc963cf5a0214fb23fada5ecd8d3c6c831634a44a1e8404561
158 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded JavaScript and numerous links, including one pointing to a known malicious redirector (ttraff.com). The document body, though heavily obfuscated, contains text related to 'address label template in excel' and the malicious URL. This suggests a phishing or social engineering attack aiming to redirect the user to a malicious site, likely for malware delivery. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=address+label+template+in+excel
    • https://cdn.shopify.com/s/files/1/0436/8374/1849/files/circle_of_life_lyrics_elton_john.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/verbe_etre_et_avoir_present.pdf
    • https://cdn.shopify.com/s/files/1/0435/4169/2580/files/46706887856.pdf
    • https://cdn.shopify.com/s/files/1/0434/7609/1046/files/model_aircraft_magazine.pdf
    • https://static.usrfiles.com/ugd/921909_06b10b610e704966975be65dea3d11f1.pdf
    • https://static.usrfiles.com/ugd/e2b09b_af7ac88a64e4466a812ea46ca97d4d0d.pdf
    • https://static.usrfiles.com/ugd/b8c837_909093583bfc4f7880e0198000c6c45a.pdf
    • https://static.usrfiles.com/ugd/590778_94eb8e6dc2614d6eb7ddd1da0ad4e5c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_782299235530450c9058303eeaf824af.pdf
    • https://cdn.shopify.com/s/files/1/0428/9177/2063/files/clinical_laboratory_hematology_3rd_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9685/1111/files/brain_disease_model_of_addiction.pdf
    • https://cdn.shopify.com/s/files/1/0430/4375/0039/files/calligraphy_pen_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/87978721754.pdf
    • https://static.usrfiles.com/ugd/ae15ca_6e4a2f91e4d941f3bdb96ce5545d8cbc.pdf
    • https://static.usrfiles.com/ugd/b8c837_9d68b757b6564f6597666d79b09c24aa.pdf
    • https://static.usrfiles.com/ugd/a771bd_ad54323b9c024fcfa2ff8a6f94e150e2.pdf
    • https://static.usrfiles.com/ugd/04e6f9_9f15765bdbae4cf59e646e3efd77da3d.pdf
    • https://static.usrfiles.com/ugd/5b5da7_608cecda4ff847118c62149f271c9fe9.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_off000087f5.bin
3cfcfa466b16a14b19ef86541d0e72a62bbc2b6f3e130127a7bb6eec90bce2c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x87F5 5416 bytes
font_01_sfnt_off00009a48.bin
86d218f50ad268c52f67eb587515374f5b538ab5930ce5044c85cc227d5f2c26
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A48 10360 bytes