Malicious PDF — malware analysis report

Static analysis result for SHA-256 1efbd3183619bce9…

MALICIOUS

PDF

70.9 KB Created: 2021-02-18 19:02:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cea5dfd30e16f794f824bc7f713490d0 SHA-1: c56e4f7ba3e401a8b727bc7fd8e6ec53b77d49c4 SHA-256: 1efbd3183619bce93b4543b3d83e97405147df3ffb2619c634e1c8a47194b702
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://baarspo.ru/wix?keyword=student+exploration+ionic+bonds+gizmo+worksheet+answers PDF link annotation
    • http://niwujobexev.22web.org/volofolurerade.pdfIn PDF document text
    • http://gimakelodikovij.iblogger.org/24929141201.pdfIn PDF document text
    • http://mixed-rootwork.com/118028521338jmxn.pdfIn PDF document text
    • http://wobirarebi.22web.org/how_much_does_a_rainbow_vacuum_cleaner_cost.pdfIn PDF document text
    • http://dulexip.22web.org/cute_babies_images_hd_free.pdfIn PDF document text
    • http://scandisvet.ru/10_day_green_smoothie_cleanse_health_benefitsp39jz.pdfIn PDF document text
    • https://sanokigoj.weebly.com/uploads/1/3/4/8/134863934/9404263.pdfIn PDF document text
    • https://beredixe.weebly.com/uploads/1/3/4/7/134762790/fba45d126.pdfIn PDF document text
    • http://natnat.fun/46811648769iwlyc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://babokad.epizy.com/zugodajijutenodunu.pdfIn PDF document text
    • http://gevorewububew.epizy.com/sri_devi_bhagavatam_telugu.pdfIn PDF document text
    • http://falogivaxaf.epizy.com/gajose.pdfIn PDF document text
    • http://vetuvawefaxuta.rf.gd/95035608022.pdfIn PDF document text
    • http://nabikelotedabe.epizy.com/adobe_acrobat_pro_dc_helpx.pdfIn PDF document text
    • http://josuguremim.epizy.com/gagopada.pdfIn PDF document text
    • http://nukalisunu.rf.gd/forget_me_not_planting_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c827.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC827 5888 bytes
SHA-256: 5367cf72be609c79ebcf89dc155acfea39061c6fcb4b35185c6c1d3232cd89fc
font_01_sfnt_off0000dc09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC09 9792 bytes
SHA-256: e4737fa8bd36da1a55a1c2eaed2382396e3d89546851f944b0287a0fb8f5d10d
font_02_sfnt_off0000fd8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD8A 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361