Malicious PDF — malware analysis report

Static analysis result for SHA-256 14d89e7abd1155d6…

MALICIOUS

PDF

44.1 KB Created: 2020-08-29 23:33:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00e9c3254c225dde2c223442516483c7 SHA-1: 76e761a8c040e27e817786413ccfc8948ef43bd9 SHA-256: 14d89e7abd1155d623aa47dd40173f0fa6d1c7875509c48489a0bab38ba01eb5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link to 'ttraff.com', identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to software ('xln audio addictive drums 2.0.0 r2r') and multiple URLs pointing to Shopify and static hosting, suggesting a lure for users to download potentially malicious software. 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.com/wix?keyword=xln+audio+addictive+drums+2.0.0+r2r
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ligumugazawebamupewav.pdf
    • https://cdn.shopify.com/s/files/1/0428/4035/9068/files/13759259181.pdf
    • https://cdn.shopify.com/s/files/1/0431/0541/9418/files/80508091067.pdf
    • https://static.usrfiles.com/ugd/b8c837_627bd5e6270a411586a7054f928fac01.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0ebfcabce4c4cf0a162a5a8fcf1f344.pdf
    • https://static.usrfiles.com/ugd/6240f8_37a5747e8bf146ff993f72bc457d43d3.pdf
    • https://cdn.shopify.com/s/files/1/0437/4583/7208/files/gubugamoraf.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/8165168609.pdf
    • https://static.usrfiles.com/ugd/19103d_ef57a030d40645b992122a59f72f9d99.pdf
    • https://static.usrfiles.com/ugd/b8c837_e779b13cfdce488bb4cb7acf164f97d5.pdf
    • https://static.usrfiles.com/ugd/b8c837_857fd19f984e4c0fa702c7e3211b0246.pdf
    • https://static.usrfiles.com/ugd/b8c837_642773ac15ce4b6585d5d3bfa5f34a20.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e58.bin
83915473c9214ec3b7474e551162e96dd9eb73a46f856059014e832a4c299754
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E58 5312 bytes
font_01_sfnt_off00007044.bin
9a06e9b5477e0f457d09801c68edf089d5a7003b804ee7c04f97c96d663dc6e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7044 10364 bytes
font_02_sfnt_off00009396.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9396 4324 bytes