Malicious PDF — malware analysis report

Static analysis result for SHA-256 b790aa08affadb86…

MALICIOUS

PDF

43.9 KB Created: 2020-09-05 15:30:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e16e1d8603e088c138f5b5563f0348d7 SHA-1: 93c16ff0bb8a9fdc6d69e73ee510d0fd852f1354 SHA-256: b790aa08affadb86a7c89f6ff2371ab5a05f06f3327e8ff0f4d3f0468a32fd7d
154 Risk Score

Malware Insights

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

The PDF file contains embedded links, one of which, https://ttraff.me/wix?keyword=domestic+girlfriend+op+piano+sheet, is identified as a malicious redirector. The file also exhibits characteristics of a PDF link farm, with numerous external links, suggesting an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes. The ML classifier strongly flagged this PDF as malicious.

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.me/wix?keyword=domestic+girlfriend+op+piano+sheet
    • https://static.usrfiles.com/ugd/79e0dc_df2291b319e94ca0a16bc3080442906c.pdf
    • https://static.usrfiles.com/ugd/cb4a18_84e3947dc8204eb9a1ac12a5c650954f.pdf
    • https://static.usrfiles.com/ugd/33a16d_af4cf52de4a94cae96cca33a0c0c84d6.pdf
    • https://static.usrfiles.com/ugd/c0a468_02b27f8b41624c28900d57e508a8b082.pdf
    • https://static.usrfiles.com/ugd/b8c837_c4ad8f2148d84b52aa9d9178b43073df.pdf
    • https://cdn.shopify.com/s/files/1/0428/4809/2323/files/rupelonibadukig.pdf
    • https://cdn.shopify.com/s/files/1/0438/3699/7782/files/62276212664.pdf
    • https://cdn.shopify.com/s/files/1/0432/3626/2050/files/kokeduderonemewesilaxam.pdf
    • https://cdn.shopify.com/s/files/1/0432/8692/1376/files/begeguperofokebetirobavoj.pdf
    • https://static.usrfiles.com/ugd/8acad3_8c041b09a7094329ba373da315b3fa97.pdf
    • https://static.usrfiles.com/ugd/b8c837_70626d7fe41640cd821cf29e914c5deb.pdf
    • https://static.usrfiles.com/ugd/740d8c_3463f65bcac74707ad09285b0da363d7.pdf
    • https://static.usrfiles.com/ugd/21a131_a6f5387d2c314993a9fa0a6c2f3c1ba2.pdf
    • https://static.usrfiles.com/ugd/9ea91e_720987efef8c4c62bc76271d2484bd88.pdf
    • https://static.usrfiles.com/ugd/ae059d_6d9c81141edc4c0a88e2051e3a254ed2.pdf
    • https://static.usrfiles.com/ugd/77eba6_70b3e3052e2c4e4fbb754e4de9cb9e4b.pdf
    • https://static.usrfiles.com/ugd/b8c837_d6ded65ed64640508ddf66f5508659ab.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_off00004d8a.bin
7d8f89177c2644743e1dd93fe545b1a41faae74de41210442ce4a1e02f0c5eba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D8A 4808 bytes
font_01_sfnt_off00005e56.bin
f61cce1b24477b0678a255770530bb8b2c0a6756a56e772720c85ddbabed3a31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E56 5568 bytes
font_02_sfnt_off0000711f.bin
15511a32aa8731677fcc7763bc3a7bf12f96465b5a8e0aeba73680862f0708a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x711F 15084 bytes

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