Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d2eba655ac9dc42…

MALICIOUS

PDF

35.2 KB Created: 2020-06-02 11:59:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3674a6c8e97054c39e1b60b993a73f9e SHA-1: f3db13698a32535fdc6c59379476c51b110d046a SHA-256: 0d2eba655ac9dc42831d8959b4383fbe7139aa1c20b58109c6baf146317c9f60
96 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files. The document body contains text related to 'Irritrol rd-600 repair' and metadata indicating it was generated by wkhtmltopdf, suggesting a lure to disguise the malicious intent. The presence of many external links, including one to 'stokesed508webpage.com', strongly indicates an attempt to redirect users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://stokesed508webpage.com/uploads/1/3/1/4/131453853/131453853.html#irritrol+rd-600+repair
    • http://kolaygirisim.com/uploads/1/3/1/3/131379021/42699.pdf
    • http://lucky1st.com/uploads/1/3/1/3/131383931/modozazeputakix-xorepifixavove.pdf
    • http://rablquartet.org/uploads/1/3/0/7/130775702/wusododijavenobeva.pdf
    • http://soloveydesign.com/uploads/1/3/1/3/131383977/fazew_daganevudosibo_vetebof.pdf
    • http://opelaz.com/uploads/1/3/0/7/130776535/sutovat.pdf
    • http://gordopolis.com/uploads/1/3/1/6/131637728/xojosugobusemufalupa.pdf
    • http://rlegacyclub.com/uploads/1/3/0/2/130270892/5050433.pdf
    • http://yleom.com/uploads/1/3/0/7/130739256/3251124.pdf
    • http://stokesed508webpage.com/uploads/1/3/1/4/131453853/terms.html
    • http://stokesed508webpage.com/uploads/1/3/1/4/131453853/dmca.html
    • http://stokesed508webpage.com/uploads/1/3/1/4/131453853/policy.html
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://juvavapu.files.wordpress.com/2020/06/95336181786.pdf
    • https://gubibegal.files.wordpress.com/2020/05/33980192671.pdf
    • https://vapijusiv.files.wordpress.com/2020/05/4879000631.pdf
    • https://jewarugunizu.files.wordpress.com/2020/05/labudutoropuxogutedulubaz.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b4f.bin
94b67aa6b04cae699f78036874f14936034a774fdec5fb0722912260bee952c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B4F 10868 bytes

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