Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4ad225c29faa2e0…

MALICIOUS

PDF

65.7 KB Created: 2021-02-26 12:04:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a9cf30d0ee770fe4d92b252ee0630fbb SHA-1: 464ad5708c86dd055a1dccc8ac48e04c6c9cdf02 SHA-256: c4ad225c29faa2e0c2a19d9964408b8b36e0d0f0f6f364133294878a45b3fff6
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://druttle.ru/award?keyword=troy+bilt+tb130+xp+carburetor PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485451/normal_60323e7ecb20e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420240/normal_600bf5156c164.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495846/normal_5fc72104432ce.pdfIn PDF document text
    • http://nobadunitedowa.22web.org/zabawimuxeloxan.pdfIn PDF document text
    • http://nuloriwilorij.scienceontheweb.net/fubizodesuxejilelu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jofawapedoguw.rf.gd/drylin_linear_guide_system.pdfIn PDF document text
    • http://pejebitopaw.rf.gd/66654064101.pdfIn PDF document text
    • http://resutujimi.epizy.com/consumer_reports_login.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/new_bhojpuri_bhakti_dj_song_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/jonevawurexenaginupifuvi.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_off0000c531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC531 5364 bytes
SHA-256: ac3f8c9b174f97fc2f1417759ae5cb5b1b1093e204755bd5ff039fec86a049b2
font_01_sfnt_off0000d78e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD78E 10240 bytes
SHA-256: a80bba58b6bbbae9d32a1bc25513262dfe310892d254c1bd06fd63e7667bb505