Malicious PDF — malware analysis report

Static analysis result for SHA-256 e51000ed98578382…

MALICIOUS

PDF

70.5 KB Created: 2021-03-01 22:34:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 07f3bb4290bf94b1f45b32c7281dd648 SHA-1: 1792c6b0ea60f6611872abe52e52f0dbddad9ffe SHA-256: e51000ed9857838236ca2642a29d195faf214825e2e10d9324199dbccff190d1
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jumiwimov.ru/award?keyword=recommender+systems+handbook+ricci PDF link annotation
    • https://dudasajaje.weebly.com/uploads/1/3/4/3/134362454/6c53cacc1ba.pdfIn PDF document text
    • https://cdn.sqhk.co/rukeditele/yiapWDN/never_gone_drama_review.pdfIn PDF document text
    • https://cdn.sqhk.co/wepiwojeta/tgcykgi/ghost_followers_iphone_app.pdfIn PDF document text
    • https://guxesawaxogego.weebly.com/uploads/1/3/4/3/134314991/4592178.pdfIn PDF document text
    • https://wapapoda.weebly.com/uploads/1/3/4/5/134581042/visunugilekivoni.pdfIn PDF document text
    • https://sisareses.weebly.com/uploads/1/3/1/4/131454440/tesevetizugosijidaf.pdfIn PDF document text
    • https://mewarikubunaku.weebly.com/uploads/1/3/1/6/131637951/mizuvolapafejo_dowowaferita_bilaxopa.pdfIn PDF document text
    • https://cdn.sqhk.co/muvotugi/hgdhijf/fisowemova.pdfIn PDF document text
    • https://biparobotimipus.weebly.com/uploads/1/3/4/4/134498468/vubuli_dozilutipak.pdfIn PDF document text
    • https://sovufejado.weebly.com/uploads/1/3/0/7/130740048/1571292.pdfIn PDF document text
    • https://guvopizap.weebly.com/uploads/1/3/0/7/130776702/kukimes-vimupunejek.pdfIn PDF document text
    • http://kivedunorujuw.66ghz.com/fotarogupavepevorej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dopamirep.epizy.com/daffodils_poem_long_questions_answers.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_off0000d546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD546 5460 bytes
SHA-256: c8c987b381ab201eee155f17a3238646209b03dfdf9ad6783db1a36518f860da
font_01_sfnt_off0000e7b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B4 11300 bytes
SHA-256: 51a5c21acf9d5c08fec7129ea108ca14c3538e2c75570d9159631bf48fb2eb51