Malicious PDF — malware analysis report

Static analysis result for SHA-256 27d41723065b2447…

MALICIOUS

PDF

68.0 KB Created: 2021-02-27 12:45:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 108db142bdca2f636c796a4f4beb3b13 SHA-1: 1a1780f93a4064517966277ff48670521bd8f717 SHA-256: 27d41723065b2447078471a56c8af41012c849c22bccc40547fced2105ed517a
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://zajinet.ru/wix?keyword=backyardigans+lyrics+whyg PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417037/normal_6002c8c1861eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380528/normal_6038fb21bd89d.pdfIn PDF document text
    • http://nesorus.mywebcommunity.org/33141622887.pdfIn PDF document text
    • http://bewewafip.scienceontheweb.net/89674724068.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450138/normal_5ff38a3fde779.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414352/normal_5fcabaefe24b6.pdfIn PDF document text
    • http://tijukilebag.getenjoyment.net/73544830182.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489041/normal_5ffdbfcddb44b.pdfIn PDF document text
    • https://cdn.sqhk.co/kufalavoxig/1oiaI3A/hat_tricks_flemington_menu.pdfIn PDF document text
    • http://wewogokuwidu.mywebcommunity.org/72_king_kutter_finish_mower_parts.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sidepojedava.myartsonline.com/likukixevuvisejepironuji.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/donaditebibeto.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/java._util._calendar_format_date.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/bootstrap_contact_form_design.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/89432315569.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/what_is_the_meaning_of_bulls_eye.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_off0000cc8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC8A 5508 bytes
SHA-256: 844d7f89b596a95309f341ba39aae4b498ec0219e74b041581b58ef270ec4009
font_01_sfnt_off0000df5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5E 10396 bytes
SHA-256: 504252195454a6eb2136786a1fabd0d18a1fa2ac2f375e35db6216651cb88313