Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c82eebba0328e24…

MALICIOUS

PDF

77.5 KB Created: 2021-02-28 02:56:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 5abe4c2096aa5e301df313938bd92837 SHA-1: 6a307bb613694ce4061fc23ad6dc40be274c0f54 SHA-256: 1c82eebba0328e24ec4b29e6b91a0230c9370f8c6bc431d114bd751f201f57e7
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://xezojetit.ru/aws?utm_term=how+long+do+you+cook+a+precooked+ham+in+a+roaster+oven PDF link annotation
    • https://cdn.sqhk.co/winelolibug/ZNjgggf/purijezujixara.pdfIn PDF document text
    • https://cdn.sqhk.co/wojipezusax/DEyjgja/10110827502.pdfIn PDF document text
    • http://sevowina.medianewsonline.com/nidodope.pdfIn PDF document text
    • https://cdn.sqhk.co/gajerivab/ZhbgAgp/58537242414.pdfIn PDF document text
    • https://masudokunu.weebly.com/uploads/1/3/4/7/134731157/gewabexaworas.pdfIn PDF document text
    • https://saditifoba.weebly.com/uploads/1/3/5/3/135325123/vakiputirogifoj.pdfIn PDF document text
    • https://cdn.sqhk.co/falupuvevore/xFjjjaN/kojogumigagojaj.pdfIn PDF document text
    • https://cdn.sqhk.co/gevopobi/vjfgfUi/mofejutawomejutinebomexa.pdfIn PDF document text
    • https://buranujepexu.weebly.com/uploads/1/3/4/3/134339299/5caccb53374.pdfIn PDF document text
    • https://xisofapetuv.weebly.com/uploads/1/3/4/7/134747578/nabetorogapogavi.pdfIn PDF document text
    • https://ropupapufodugut.weebly.com/uploads/1/3/4/6/134650221/4872086.pdfIn PDF document text
    • https://cdn.sqhk.co/mujowofapubi/KhggheG/zombie_shooting_games_roblox.pdfIn PDF document text
    • http://nevinidonet.mywebcommunity.org/25186072328.pdfIn PDF document text
    • https://cdn.sqhk.co/xakalodesi/idKjjhf/71536400359.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368964/normal_602983042544e.pdfIn PDF document text
    • https://jedegifopa.weebly.com/uploads/1/3/0/7/130738854/9373374.pdfIn PDF document text
    • http://jirenaxapibetig.scienceontheweb.net/aircraft_maintenance_course_near_me.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rosajeku.myartsonline.com/defigatabibuvadogex.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_off0000f0aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AA 5768 bytes
SHA-256: 9e78724003293190854ad6f32167c450937ad30c92ad10350279b9493eb30b82
font_01_sfnt_off00010444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10444 10536 bytes
SHA-256: ca7b7b77a993d307b2e3e0617485fba40ab78286102d27882414f17db71ed369

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