Malicious PDF — malware analysis report

Static analysis result for SHA-256 524df17d76b1ca4d…

MALICIOUS

PDF

47.4 KB Created: 2020-08-31 07:38:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e984fa71bdcc3edd4ea0f3b4b8d5c6ca SHA-1: 1bf5967e6556afa850401aab3be7a220cb636f81 SHA-256: 524df17d76b1ca4d6eb011fde4b3264deb91d734451043933cb1a5ecedef3c48
154 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to appear as a pharmacy clinical coordinator's handbook, but it redirects to malicious infrastructure. The primary malicious URL identified is https://ttraff.cc/wix?keyword=pharmacy+clinical+coordinator%2527s+handbook+pdf. The document's structure and embedded links strongly suggest a phishing or redirection attack.

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.
  • 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.cc/wix?keyword=pharmacy+clinical+coordinator%2527s+handbook+pdf
    • https://cdn.shopify.com/s/files/1/0433/8683/0998/files/46658992897.pdf
    • https://cdn.shopify.com/s/files/1/0430/5344/9367/files/40k_infiltrators_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/2625/9876/files/vopisila.pdf
    • https://static.usrfiles.com/ugd/ec0c41_4551eb2f436f4a03a93fb7c04002fe67.pdf
    • https://static.usrfiles.com/ugd/cafc24_6e78056900fb49c1bd76f1b7cb5c8079.pdf
    • https://static.usrfiles.com/ugd/538d67_98398f02c80c42e8b39b79b973355632.pdf
    • https://static.usrfiles.com/ugd/a4e402_a0ec214594c04ef29bacc6e2275dfaa0.pdf
    • https://static.usrfiles.com/ugd/b7ab08_3ab748c142384457bc2697439d139360.pdf
    • https://static.usrfiles.com/ugd/99afdc_622673dc4d874c178b6900c8fb42bb14.pdf
    • https://static.usrfiles.com/ugd/a2ebd8_b4075297420c4f52a16507238cc13fbd.pdf
    • https://static.usrfiles.com/ugd/b5472a_afb1789b336f407086535a9faca9e42a.pdf
    • https://static.usrfiles.com/ugd/b8c837_794720be077449388cd86d87b8f395c3.pdf
    • https://static.usrfiles.com/ugd/784815_75dffe49924640dba4a1de495390d5e2.pdf
    • https://static.usrfiles.com/ugd/b8c837_7056f474405147048f057f18428ca38b.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006db5.bin
d9adfab86aab7435ab569e12e202a741e4926af637d6041ff95f902a8b9901b9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB5 5404 bytes
font_01_sfnt_off00007fe9.bin
0a68fc9c1aafd937aabfa054cce0407d7f3213d949d1d5a544335257f44e6fe0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE9 10240 bytes
font_02_sfnt_off0000a275.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA275 4324 bytes