Malicious PDF — malware analysis report

Static analysis result for SHA-256 462d2588ceb987be…

MALICIOUS

PDF

85.1 KB Created: 2021-03-02 21:46:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ea3f7edc9e136c6a80a979c3479d6765 SHA-1: 43a998d65d64b1f13d907fb31a4ae7744da72dfd SHA-256: 462d2588ceb987bec48a04c04da0f9a314abd066ff0c346eca20efe976372dd6
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous external links to other PDF files hosted on various domains. The document body, though heavily obfuscated, appears to contain metadata related to a vacuum cleaner, likely serving as a lure to disguise the malicious intent of redirecting users to potentially harmful content. No scripts were extracted, but the presence of many external links suggests a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/award?keyword=shark+navigator+lift-away+deluxe+nv360+upright+vacuum+blue+parts PDF link annotation
    • https://farisogu.weebly.com/uploads/1/3/4/3/134307724/sugopivevuja.pdfIn PDF document text
    • http://questotzvezd.space/geo_realm_a_real_world_mmorpgiug2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416786/normal_603a435e131e7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375507/normal_5fc7ee552a6f5.pdfIn PDF document text
    • https://gugozakeku.weebly.com/uploads/1/3/4/5/134588211/lonozowiganufej.pdfIn PDF document text
    • https://cdn.sqhk.co/noloxunipe/i59tjag/zig_zag_straight_up_natural_cigar_wraps.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376879/normal_5fd8693859333.pdfIn PDF document text
    • http://clipshd.design/francisca_serrano_libros57j10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422640/normal_601d4ea6d8e91.pdfIn PDF document text
    • http://50offshop.info/milida0aofe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451549/normal_5ffb062a9a675.pdfIn PDF document text
    • https://cdn.sqhk.co/bivatesiromu/ggptKzr/zonepopulonewa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413987/normal_5fdacf141371b.pdfIn PDF document text
    • https://vogadebu.weebly.com/uploads/1/3/4/7/134723944/lojikozolun.pdfIn PDF document text
    • https://telozigigozato.weebly.com/uploads/1/3/4/3/134310186/e4cbd.pdfIn PDF document text
    • http://topsol.xyz/la_guerra_de_las_cien_horas_con_hondurasyuqol.pdfIn PDF document text
    • https://muxojuwarerufi.weebly.com/uploads/1/3/5/3/135388895/3970884.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00010a46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A46 6688 bytes
SHA-256: 2c873bf4d4158132959d8cc47e98a4476e5e0eeaa5fb5be222e24cf228baacd6
font_01_sfnt_off000120f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120F4 10980 bytes
SHA-256: e5af5d0325563411bc145facb70bb15e2cadb5e096d0eaf54cd1b704ca7a2315

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