Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbca7bece015771e…

MALICIOUS

PDF

63.5 KB Created: 2021-02-17 11:52:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 237fdc889260620b9c949bb9bff02084 SHA-1: 992d7e2d7e681bf114498ac2e9f95d93ae54f90f SHA-256: bbca7bece015771e91e5458680c5e0d0c38a102168a3daf45e952d42a6818a64
244 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=fitness+connection+north+hills+raleigh+nc+class+schedule In PDF document text
    • https://cdn.sqhk.co/rufosopufu/Ojiip6l/metal_slug_anthology_ps2_vs_ps4.pdfIn PDF document text
    • https://denupadifujufo.weebly.com/uploads/1/3/0/8/130813478/tezeluzexof_pubiterus_dujixikujakez.pdfIn PDF document text
    • http://ontrade.top/61394120190u5qph.pdfIn PDF document text
    • https://kolijegidixut.weebly.com/uploads/1/3/1/3/131379325/d8b92f93c22ae01.pdfIn PDF document text
    • https://cdn.sqhk.co/figakeves/ERzhgyo/memupafufegemoxezojadez.pdfIn PDF document text
    • https://xewulatejema.weebly.com/uploads/1/3/5/3/135345986/a4141f.pdfIn PDF document text
    • https://cdn.sqhk.co/redusebi/IGhdhbW/6722241272.pdfIn PDF document text
    • https://cdn.sqhk.co/lomotutuwe/dWgfRhd/europe_map_freepik.pdfIn PDF document text
    • https://cdn.sqhk.co/kafekata/Kibiigf/mofibafudazogezupufumotu.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/jOgfifg/63544715476.pdfIn PDF document text
    • http://gezowipefu.22web.org/vawuzumisasov.pdfIn PDF document text
    • https://sitapiwagese.weebly.com/uploads/1/3/0/8/130814355/nixididusilafu-dalanuwo.pdfIn PDF document text
    • https://tabutepapuwup.weebly.com/uploads/1/3/0/7/130740025/6883ecfcc18e3.pdfIn PDF document text
    • http://pixell.store/hedwig_s_theme_piano_free_sheet_musicaaqrq.pdfIn PDF document text
    • http://vopibuxipem.22web.org/cheadle_and_marple_sixth_form_college_ofsted.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kagiwabiluwotel.epizy.com/dadodojamonovidakegaxakam.pdfIn PDF document text
    • http://mogexusa.rf.gd/dosutumosumudozoru.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_off0000bbbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBBC 5156 bytes
SHA-256: 42d3c583a7e95a2d6f812474ea6f61064b1fe7e0cc67960c6011eecb992c62ce
font_01_sfnt_off0000cd40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD40 10340 bytes
SHA-256: a8ec5f174fc1064100f9a27094edaf6d5c1fbd6b8028853ddbe9582abcf9e10f

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