Malicious PDF — malware analysis report

Static analysis result for SHA-256 30aba3e25d624dd2…

MALICIOUS

PDF

74.8 KB Created: 2021-05-20 22:19:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0654c9864a996e28514a0bd6b2cfcc7f SHA-1: 1c7cda9d721fca1ca1b0758dcca75c704fca47d0 SHA-256: 30aba3e25d624dd23259d61c704f2101a7cb6afa7f79c986993886bcdf27d010
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, suggesting a phishing or malware distribution attempt. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and numerous external links indicate it's designed to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://static.s123-cdn-static.com/uploads/4386852/normal_6008a973de830.pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4494874/normal_6002adb21f5c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420760/normal_602dde0e1af60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484370/normal_60482d2cbf02d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486994/normal_5fedc9482e975.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380072/normal_5fd22bcd80436.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492880/normal_6069d3874a90c.pdfIn PDF document text
    • https://xupodidif.weebly.com/uploads/1/3/0/7/130739682/demafuvidokola.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371005/normal_5ff45e219317c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501479/normal_5fc84288d771d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419412/normal_5fdbc25ebfa74.pdfIn PDF document text
    • https://wevejabunom.weebly.com/uploads/1/3/1/4/131406075/2638846.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/kMuynZNWtA0/wb?keyword=t%20fal%20deep%20fryer%20filterPDF link annotation
    • https://s3.amazonaws.com/dakebesuvum/easy_fruit_smoothie_recipes.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/zararesulanala.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/bifenip.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/97785290867.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/how_to_work_weight_watchers_scales.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/west_bend_bread_maker_41085_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/ftl_stealth_ship_achievements_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/16078286071.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B6 4908 bytes
SHA-256: df28e3983394ff0813708a47ab528a4f39a7913b5811d42f38c16fb1cb9964e3
font_01_sfnt_off0000f883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF883 10956 bytes
SHA-256: 0dd6ae8efcb9164c664bc1108f932d715d43fb36394942b796ace0f412f077db

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