Malicious PDF — malware analysis report

Static analysis result for SHA-256 73c1da2b69e061dd…

MALICIOUS

PDF

67.1 KB Created: 2021-02-24 11:15:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 720db35fe168daecbc0c9b0ca4be29bc SHA-1: 1c48940a1e50d592fb04a80833c08a9dd3c5c120 SHA-256: 73c1da2b69e061dd2121313a3dbaeffeed9f5030f98c54a12c810828356784a7
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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/wix?keyword=bf4+emblems+to+copy PDF link annotation
    • http://helplnstagramcontact5087423.com/fobuwitaterumisejarinewipfo8lp.pdfIn PDF document text
    • http://carishr.com/545098603430vbml.pdfIn PDF document text
    • https://cdn.sqhk.co/bexutavukaro/ZiOjfja/buzzards_bay_tide_chart.pdfIn PDF document text
    • https://cdn.sqhk.co/puvubuzu/ibjjjgG/50485671171.pdfIn PDF document text
    • http://runolive.com/99619445791bj83l.pdfIn PDF document text
    • http://meriline.store/what_to_ask_when_taking_over_a_businessmbvz2.pdfIn PDF document text
    • https://zuvagojajom.weebly.com/uploads/1/3/5/3/135398962/pafijibavadak.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zedafazoteto.epizy.com/blood_type_b_shopping_list.pdfIn PDF document text
    • http://filivuso.rf.gd/mesa_dual_rec_rev_g.pdfIn PDF document text
    • http://kixasudasiwub.epizy.com/kaponurixidaxasutiluge.pdfIn PDF document text
    • http://pumumiz.epizy.com/litopibenavogowufexawu.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/geographic_terms_worksheet_answers.pdfIn PDF document text
    • http://sodarag.epizy.com/volitional_form_in_japanese.pdfIn PDF document text
    • http://zawopomosegasax.rf.gd/29912589490.pdfIn PDF document text
    • http://miloxirabufa.epizy.com/45092527756.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_off0000c994.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC994 5232 bytes
SHA-256: a22a512cc23963b74504e71390f1a821408b90af27e0f3e3ed309314283a25b1
font_01_sfnt_off0000db6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6B 10684 bytes
SHA-256: 303b178f90fb6090e6abfa9b765e836522bdd189bdce97bbff590dc96d7be875