Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a461184264e7a1b…

MALICIOUS

PDF

41.9 KB Created: 2020-08-30 00:59:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4343ad4736cf6e5175e7d89b5f34b956 SHA-1: 7cd0726dda303b55c1d9615fceae77e0ba8dfa33 SHA-256: 6a461184264e7a1b612c229f4a4826a0a2f8a19af5a0daca1fed036bc392e9bf
154 Risk Score

Malware Insights

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

The PDF contains a prominent link that, when clicked, redirects to a malicious URL. This URL is associated with a redirector and appears to be part of a link farm designed to distribute malicious content, likely disguised as popular media downloads. The ML classifier strongly indicates maliciousness, and the PDF structure itself is flagged for containing a mass of external links.

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.ru/wix?keyword=how+to+train+your+dragon+2+full+movie+in+hindi+dubbed+download+filmyzilla
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_146b08c34cde469494a55c87ba4bcac1.pdf
    • https://static.usrfiles.com/ugd/54fa57_eeb409d46901406d979823be2bb48b5a.pdf
    • https://static.usrfiles.com/ugd/b8c837_05ccfb6f509347ac986093d5b86f1f3d.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_26b749d60b0341c4b5fd32b24a4c2c1b.pdf
    • https://static.usrfiles.com/ugd/b8c837_e0011227a3bc4570887837fc02b034a8.pdf
    • https://static.usrfiles.com/ugd/217d68_a0fe9af15e5743cdbec58422bb8bd609.pdf
    • https://static.usrfiles.com/ugd/b8c837_69fedcdc486e465ea37485c580571494.pdf
    • https://static.usrfiles.com/ugd/b8c837_b47872eb1fc74acd89e7d333ae2f581c.pdf
    • https://static.usrfiles.com/ugd/93c935_0a3310849be74a0eb2ae510c6394ccff.pdf
    • https://static.usrfiles.com/ugd/49be48_f2bd5bb91874439ea51d85abada09e2f.pdf
    • https://static.usrfiles.com/ugd/b8c837_87703f85dc7a43dfa7167025ac7a3d38.pdf
    • https://static.usrfiles.com/ugd/e2f7e1_0e53d709eeae4ff4a2a6754d69aebbee.pdf
    • https://static.usrfiles.com/ugd/badafb_56a169dd4ea142d5a3d689262c656ac3.pdf
    • https://static.usrfiles.com/ugd/b8c837_b207ad7ef46945b7889860c5efc70661.pdf
    • https://static.usrfiles.com/ugd/b8c837_bda96b91e62445049cbdeb2cb1c3580d.pdf
    • https://static.usrfiles.com/ugd/b8c837_6f19988edcee4f85a9c29f7c89c210ff.pdf
    • https://static.usrfiles.com/ugd/8b9728_4242e423d2cf4f518dda29f84b25cac6.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062fd.bin
3306d705741513657a5a8f8452ef953e9a52c6a4c39425816e7b3a1ee891137d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62FD 5680 bytes
font_01_sfnt_off0000764a.bin
f8f1724599e9d211fe6a5638d69febdbfe66405aea48cc6c4dbe5fd1228aeeab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x764A 10624 bytes

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