Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9f327e5605b7426…

MALICIOUS

PDF

74.4 KB Created: 2021-02-26 03:07:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9d2acd7959f6f948c887fbdce5258717 SHA-1: 3d151f9f2ed72386091e4dfc5134e9d55d29954b SHA-256: f9f327e5605b74269d2f04bd685003608f6e04457e394feee030beb9284bb6cc
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://jottigo.ru/123?utm_term=format+of+writing+research+paper+pdf PDF link annotation
    • http://idealicaitalia-official.site/darkness_visible_movie_summaryicwko.pdfIn PDF document text
    • http://kartaidatodemeleri.com/chopin_nocturne_2_piano_sheet_musicqzu5s.pdfIn PDF document text
    • http://dotuzodozo.22web.org/riwubofimewena.pdfIn PDF document text
    • http://pedron.fun/xiredimofiwokerasizv4vpv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409098/normal_5fdcf2033a36c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469633/normal_601f1eeb5e644.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/gugixivuvujijujegotetewo.pdfIn PDF document text
    • http://tovigubiv.rf.gd/answer_key_upsc_2019_paper_1.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/srimad_bhagavatam_sanskrit.pdfIn PDF document text
    • http://voxinuxo.epizy.com/tesukamiragosonixo.pdfIn PDF document text
    • http://zekubegem.epizy.com/multiplying_decimals_worksheet_year_6.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/99840547054.pdfIn PDF document text
    • http://sidiwen.epizy.com/daihatsu_charade_2007_service_manual.pdfIn PDF document text
    • http://leponodorudoje.rf.gd/8515911830.pdfIn PDF document text
    • http://fufebelanamug.rf.gd/puvin.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_off0000e6fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6FB 5584 bytes
SHA-256: e2e3fab12e8f16175f715522ef64b1d8c499a62fd3c337529c629fa4a586a67a
font_01_sfnt_off0000f9e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E6 10292 bytes
SHA-256: d09270a22f5bdbf9d72e841734f3e4b318dd9ba90031d6c95d5b474a305948d9