Malicious PDF — malware analysis report

Static analysis result for SHA-256 67ee302e10c41eea…

MALICIOUS

PDF

43.8 KB Created: 2020-08-06 07:46:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dabd2d7ec060b5eadd813783b1c913cc SHA-1: 7ede400625ea0604e7393992c5390ef6ddb1b77e SHA-256: 67ee302e10c41eea9deb829a57687216b704a18951228767e7be9bd60dc7a7e6
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a known malicious redirector. The document body, though partially corrupted, contains text suggesting a lure related to filling out a PDF. The presence of a link farm and a malicious redirector indicates an attempt to direct users to potentially harmful content, likely for phishing or malware delivery.

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.cc/pify?keyword=pdf+ausf%25C3%25BCllen+chip
    • http://files.zimmermanfeedandgrain.com/uploads/1/3/2/6/132695707/javepizusukax_rixag_dadurovasasabo.pdf
    • http://files.masjidrasoolallah.org/uploads/1/3/1/4/131454316/nabuzamami.pdf
    • http://files.rsvpvolunteercaregivers.org/uploads/1/3/2/6/132681824/navate.pdf
    • http://files.epiphronresearch.com/uploads/1/3/1/8/131858661/1722142.pdf
    • http://files.fullyfusedcrafts.co.uk/uploads/1/3/2/6/132695596/gemezizesefos.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/1952/5531/files/9663496163.pdf
    • https://cdn.shopify.com/s/files/1/0433/5560/3094/files/59814028961.pdf
    • https://cdn.shopify.com/s/files/1/0431/2236/0469/files/rakagepizajek.pdf
    • https://cdn.shopify.com/s/files/1/0434/0737/6542/files/xuruvuvuliwesajawolobi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7941/7504/files/mokexezurunejurimejabi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8886/2622/files/kivuxikewofigegubiji.pdf
    • https://cdn.shopify.com/s/files/1/0430/6075/6641/files/83721616703.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/10043651196.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8311/files/gobesapiziwomofarurabef.pdf
    • https://cdn.shopify.com/s/files/1/0430/1455/3763/files/xelawojopopabago.pdf
    • https://cdn.shopify.com/s/files/1/0434/8759/2608/files/tajamubivudabir.pdf
    • https://cdn.shopify.com/s/files/1/0434/7917/1222/files/32971443646.pdf
    • https://cdn.shopify.com/s/files/1/0435/5201/4491/files/robija.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/zagezujiriwuxuj.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_off000069e4.bin
947d4b138820e86803da8bde079eecd2ace1e2f82922f3981b0f7f1dbeaf9fe1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69E4 5268 bytes
font_01_sfnt_off00007ba1.bin
8c758efe6260bcfb07c04c54e6f5846d917925f8ac9948c19688481bf4296a4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA1 11044 bytes

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