Malicious PDF — malware analysis report

Static analysis result for SHA-256 418ddc5f1184fca2…

MALICIOUS

PDF

68.7 KB Created: 2021-02-14 02:09:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8b51712d728355ef5807541518311b0e SHA-1: fb0bb96fbfbb7f1f7b487bd47b74a2837237c975 SHA-256: 418ddc5f1184fca27105c1a108f694dc87f70576252e5e0a438962e27837fa54
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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=cystic+fibrosis+case+study+answer+key PDF link annotation
    • https://jagotizepevex.weebly.com/uploads/1/3/4/4/134464701/464986b8c.pdfIn PDF document text
    • https://norusukesalija.weebly.com/uploads/1/3/4/3/134356509/8656839.pdfIn PDF document text
    • https://xirejefeju.weebly.com/uploads/1/3/4/7/134723985/josumuzorovavi.pdfIn PDF document text
    • https://lovevisop.weebly.com/uploads/1/3/1/4/131410094/9402043.pdfIn PDF document text
    • https://libodarupebixab.weebly.com/uploads/1/3/0/9/130969674/fa5eb30801af0a6.pdfIn PDF document text
    • https://legadiduzavof.weebly.com/uploads/1/3/2/6/132681829/9294884.pdfIn PDF document text
    • https://radisowe.weebly.com/uploads/1/3/4/3/134366404/f18d3de23.pdfIn PDF document text
    • http://kefowawud.22web.org/tiwagexizinajisarut.pdfIn PDF document text
    • http://xavelodezazil.iblogger.org/messenger_win_10.pdfIn PDF document text
    • https://punujagenak.weebly.com/uploads/1/3/0/7/130775029/7c157.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zasegusof.epizy.com/anchoring_heuristic.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/secondary_hypothyroidism_nice_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/aeria_games_client.pdfIn PDF document text
    • http://mubadel.epizy.com/11719016003.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/metastatic_urothelial_carcinoma_treatment_guidelines.pdfIn PDF document text
    • http://sijekovurodubo.rf.gd/beverly_hills_90210_season_1_480p.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_off0000d259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD259 5284 bytes
SHA-256: 596022ea83f49456bc8a27520fe262c0a2a778bf6e58121174922ab89517af97
font_01_sfnt_off0000e47b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE47B 9804 bytes
SHA-256: 2793bc25ea5b6e97d325f6b81bfec5f58b8df66c8c92e1582ef54b85d50bc23c