Malicious PDF — malware analysis report

Static analysis result for SHA-256 0382da52d31ea053…

MALICIOUS

PDF

214.6 KB Created: 2020-09-01 22:13:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff4876dc1191c0dfa3637b0d50832efa SHA-1: aa29412bb38dabe1d34737c6fba9c98169e27d28 SHA-256: 0382da52d31ea053c7bcb7f5afa85d11ef232ceac11c6f16d328da0e4979ee67
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that point to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'tumour lysis syndrome nice guidelines' and a URL that appears to be a lure. The ML classifier also strongly indicated maliciousness. The primary IOC is the redirector URL, which is likely used to deliver a second-stage payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.me/wix?keyword=tumour+lysis+syndrome+nice+guidelines
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/63d3ad_884a9c7644b04c6abbff6ff49ca0675c.pdf
    • https://static.usrfiles.com/ugd/b8c837_a0d5665c94c84289bad72b7396d0bf35.pdf
    • https://static.usrfiles.com/ugd/b8c837_15a63e2dcabf44b3bbb9404c704151f8.pdf
    • https://static.usrfiles.com/ugd/6cf392_e4865b926890424fb5055accd64ecd68.pdf
    • https://static.usrfiles.com/ugd/857e61_574669b68e584075a464e137c090df46.pdf
    • https://static.usrfiles.com/ugd/76156b_a8c8f17aabf9453b858e05c9f7cc4535.pdf
    • https://static.usrfiles.com/ugd/12dc78_ab394542970e47f193de0dd794a49af9.pdf
    • https://static.usrfiles.com/ugd/63d3ad_b0df86c453714ecfae473f9073c5d66b.pdf
    • https://static.usrfiles.com/ugd/b8c837_d574a1fad25840d6a443539307cf5dd8.pdf
    • https://static.usrfiles.com/ugd/b8c837_e46635d64f244134a53be0cee9b98566.pdf
    • https://static.usrfiles.com/ugd/e02969_018409ab9ba640639196c6734a041063.pdf
    • https://static.usrfiles.com/ugd/5af86b_66eb7fdce54e4f63b907e590ee9708bb.pdf
    • https://static.usrfiles.com/ugd/8b2c09_9793ffb9ca614a7c9b26869f6be861d3.pdf
    • https://cdn.shopify.com/s/files/1/0438/8660/8552/files/85837888299.pdf
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/gogezijufibirowefobexod.pdf
    • https://cdn.shopify.com/s/files/1/0433/5783/1326/files/a_level_further_mathematics.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002f067.bin
d164eb81d58a0baf8a44047cba23a9252e4abc958caa3d895caf808bd342f9c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F067 5100 bytes
font_01_sfnt_off000301b7.bin
c0645af491afcaf4c338b205605709059c4322ad984b162d46e3a7a572a5c1e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x301B7 17164 bytes
font_02_sfnt_off000336ca.bin
a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x336CA 16204 bytes

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