Malicious PDF — malware analysis report

Static analysis result for SHA-256 127fd389f5e2d14b…

MALICIOUS

PDF

71.7 KB Created: 2021-03-30 20:35:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: a8d9b238c8038bf2ff63e1113ea2e714 SHA-1: 1f530bd890e0d0b3919daebbee61cbca5a1a619f SHA-256: 127fd389f5e2d14b346ac663e711cf83b99aa0af9155e6eec658319cafc5f7f4
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing attempt. The document body, though heavily obfuscated, contains text related to 'Quantum healing deepak chopra audiobook', likely a lure to attract users to click on the embedded malicious links. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing or malware-hosting sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gimoguvi.ru/strik?utm_term=quantum+healing+deepak+chopra+audiobook PDF link annotation
    • https://gitujibexilen.weebly.com/uploads/1/3/1/4/131406430/3c941dc85.pdfIn PDF document text
    • http://dotuzodozo.22web.org/cron_job_format_validator.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375698/normal_5fe5fd115c9df.pdfIn PDF document text
    • https://bitokulizawefe.weebly.com/uploads/1/3/4/6/134684274/nugetudo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495251/normal_5ff36f288af17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380080/normal_60310778ae3e8.pdfIn PDF document text
    • https://darojavanobize.weebly.com/uploads/1/3/4/8/134889586/6038469.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446380/normal_601ec91ef3e57.pdfIn PDF document text
    • https://fumamefix.weebly.com/uploads/1/3/0/8/130873833/1765333.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426415/normal_5fee1943e9b82.pdfIn PDF document text
    • https://puxikatekeji.weebly.com/uploads/1/3/2/6/132681322/revusa-rodifivutodu-badetupuwonimad-rujumadiwimovis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://robogotut.epizy.com/lofononexepod.pdfIn PDF document text
    • https://d6b7b3c7-8429-4d82-9d75-5d5d09e763cc.filesusr.com/ugd/a8c229_a24abf1a3ff848d2821e8f35bc2cf3c4.pdf?index=trueIn PDF document text
    • http://metuvubom.rf.gd/hp_probook_6560b_ram_specification.pdfIn PDF document text
    • http://nelivizazepafo.epizy.com/test_de_aptitudes_y_habilidades_laborales.pdfIn PDF document text
    • http://zuwajuzi.epizy.com/56777180489.pdfIn PDF document text
    • https://44407f20-7244-4107-9544-84d8151b6f9a.filesusr.com/ugd/8508de_5c1f6576056f40bd93fe05381a21aa9b.pdf?index=trueIn PDF document text
    • http://kibibozo.rf.gd/67666969020.pdfIn PDF document text
    • https://ac685e6e-6442-44c0-91a1-b3a367e79ef2.filesusr.com/ugd/ce77c6_5cd1b340776745c2a41e700c202ff163.pdf?index=trueIn PDF document text
    • https://5e54824a-8208-41b0-8aeb-7c017e8cfb46.filesusr.com/ugd/f64db8_e348e9d018d64b4a9b5aa0e42703d2f9.pdf?index=trueIn PDF document text
    • https://e9b66cc5-9289-431c-8f17-6739e1cd2d88.filesusr.com/ugd/c8f33b_a924c4b2ea374499a7481cb0d76057a7.pdf?index=trueIn PDF document text
    • http://ninanupazazudad.rf.gd/32290883233.pdfIn PDF document text
    • http://midelex.epizy.com/63022714234.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_off0000db3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB3A 5572 bytes
SHA-256: 0bf0df49c39f4639e1054ab234065a8b4b1038a2813c201ccfdee7d67d898f47
font_01_sfnt_off0000edff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDFF 10280 bytes
SHA-256: c4cc608264de6e98546a476720e3e18504d445a4dcf6e3d6a8981f3ed13aacbe