Malicious PDF — malware analysis report

Static analysis result for SHA-256 19ebb224472f4ba5…

MALICIOUS

PDF

39.7 KB Created: 2020-08-23 18:14:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c48a46fd0b4161a151221aecd1071b92 SHA-1: 4a747fd33b6cc2383c5fe105a7dd7d12d7883377 SHA-256: 19ebb224472f4ba5a70c9bbce0020853c734f35a7e209182668d344da7933b0f
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL identified is https://ttraff.cc/pify?keyword=java+for+aix+7.+1, which is part of a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains this URL and other URLs pointing to external PDF files, suggesting a lure or redirection mechanism. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=java+for+aix+7.+1
    • http://jibivos.carpetcleaningstpete.com/uploads/1/3/0/7/130738948/zikuvunowimabafasor.pdf
    • http://files.dylanhurwitz.com/uploads/1/3/1/3/131398406/pukogewimi.pdf
    • https://cdn.shopify.com/s/files/1/0440/6345/7432/files/kundali_pro_filehippo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4270/files/wazekadukojutogas.pdf
    • https://cdn.shopify.com/s/files/1/0441/3734/9272/files/complete_warrior_3._5e.pdf
    • https://cdn.shopify.com/s/files/1/0465/1597/8390/files/74809743887.pdf
    • https://cdn.shopify.com/s/files/1/0437/3417/1797/files/biology_notes_for_class_12_cbse_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7331/4715/files/viwebixoxivewevavewoma.pdf
    • https://cdn.shopify.com/s/files/1/0435/3854/6840/files/bizakew.pdf
    • https://cdn.shopify.com/s/files/1/0434/4876/2529/files/biology_book_class_9.pdf
    • https://cdn.shopify.com/s/files/1/0429/1143/2857/files/6885599827.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_off00005d0f.bin
dd6b27fb6949091a537aaf18fd4282fc2951ac4241ce0d36e47ba57ed25ba741		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0F 4832 bytes
font_01_sfnt_off00006dab.bin
f541f8456586ba8e6164e3e1aa5962f86fe5b9bbc48d0c566eb9806b9e42c862		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAB 11596 bytes

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