Malicious PDF — malware analysis report

Static analysis result for SHA-256 0307947d61b190b0…

MALICIOUS

PDF

38.1 KB Created: 2020-03-30 09:47:52 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5eb763c8cce2da16c5f3071f85d67141 SHA-1: 6be8d3c97f67c06c7ad377c6fde15187a297d243 SHA-256: 0307947d61b190b01f3f5d41d8af2efaee53e06de490ef22930fb34c2b12c871
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the suspicious link structure. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://ankezimmermann.ca/uploads/1/3/0/5/130545128/130545128.html#tenets+of+critical+race+theory
    • http://sicahpump.com/uploads/1/3/0/5/130551177/4046499.pdf
    • http://jessmstitt.com/uploads/1/3/0/6/130621645/ludafikusog_palesebawusob_fapogigog_fubadedugamamuw.pdf
    • http://myroofnj.com/uploads/1/3/0/6/130603995/3542710.pdf
    • http://interprogroup.ca/uploads/1/3/0/6/130620849/lulanawubes.pdf
    • http://jenaskai.com/uploads/1/3/0/2/130273626/wovote-wumasetusovefov-zekizoz-paniboxujen.pdf
    • http://caribbeanwellness.org/uploads/1/3/0/6/130621086/1453d806.pdf
    • http://andrewandcandice.com/uploads/1/3/1/0/131070073/8321217.pdf
    • http://mpm-consult.com/uploads/1/3/1/3/131380265/golude.pdf
    • http://wnmechanical.com/uploads/1/3/0/2/130289735/2ce95a2a6b24e.pdf
    • http://maxgor.fun/uploads/1/3/0/5/130544811/metateba.pdf
    • http://hoycocinoyo.org/uploads/1/3/1/3/131381675/gomeviwatavo.pdf
    • http://rcthelabel.net/uploads/1/3/0/3/130313113/29f5bb698ab2.pdf
    • http://realestateimpossible.info/uploads/1/3/0/4/130491488/nalepofirevovex.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dc6.bin
0ce5a3039594aa21641cbe1679e4f874deb96c3af20e1aaeb3ed21d2f99bc3c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC6 7676 bytes

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