Malicious PDF — malware analysis report

Static analysis result for SHA-256 89d0d301aa5b56e1…

MALICIOUS

PDF

39.6 KB Created: 2020-11-03 20:54:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 249c9b17612db49b560c7feb0c8f2a34 SHA-1: 537efc2fc4d709e4c312bf1700ec23c70da59a9e SHA-256: 89d0d301aa5b56e1868b02e6ac2ce095de732e62e6bec3f84699913e6478ee52
154 Risk Score

Malware Insights

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

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically 'ttraff.me'. The document body, though heavily obfuscated, contains text related to 'surveillance camera parts store' and a URL that appears to be part of a link farm designed for SEO manipulation. The ML classifier strongly indicates maliciousness, and the presence of redirector links suggests an attempt to lead the user to a malicious site.

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/123?keyword=surveillance+camera+parts+store
    • https://bisitewo.weebly.com/uploads/1/3/4/4/134496646/e2761.pdf
    • https://cdn-cms.f-static.net/uploads/4443341/normal_5f9e71250b789.pdf
    • https://letalisukom.weebly.com/uploads/1/3/4/3/134316231/kizov.pdf
    • https://fulipevaxavu.weebly.com/uploads/1/3/2/6/132695351/7c7b6f3.pdf
    • https://tovozilulu.weebly.com/uploads/1/3/0/8/130873983/3007040.pdf
    • https://sovopubi.weebly.com/uploads/1/3/0/7/130775052/lixusewasaxaxa_nosesijuro.pdf
    • https://wimejevufafej.weebly.com/uploads/1/3/4/3/134379448/4339992.pdf
    • https://cdn-cms.f-static.net/uploads/4386621/normal_5f91f21dc8b78.pdf
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/miwobajiziz_jiwizu_rumuzijotux_xetegowi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tamobalasu/jason_burkett_baby.pdf
    • https://uploads.strikinglycdn.com/files/8c6285eb-d554-4e34-9744-72f734405d2c/ninisoji.pdf
    • https://uploads.strikinglycdn.com/files/29b7f8a5-a9b1-48a5-b0b9-2b974d68e454/74965027723.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_off00005ca0.bin
4e747c8d869c8622b55e94d608191bf7b9a5eab9c121c0c5c85072b25ade3637
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA0 5244 bytes
font_01_sfnt_off00006e60.bin
d4bbdc5765f5ab37fee4b910a3db3d1ba17e16a979d99f82a9772071f672c9bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E60 10232 bytes