Malicious PDF — malware analysis report

Static analysis result for SHA-256 c70702b1038bb3f8…

MALICIOUS

PDF

70.6 KB Created: 2021-02-26 21:12:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 517117fd8278ebe2432482c3e7d77898 SHA-1: db4334c1fed257bdd064571c35fecd9c65160db3 SHA-256: c70702b1038bb3f8b6830d8f753dd4ac621616f5112b13ec220feb2464c9cc36
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://xajibur.ru/wix?keyword=never+fade+pdf+vk PDF link annotation
    • http://fredo.bike/nanosofebq5rzn.pdfIn PDF document text
    • https://cdn.sqhk.co/verexoleki/jZzVgfn/adventureland_theme_park_alabama.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464734/normal_5ffa15441d94b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411681/normal_5ffa073d51169.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/fidijib/52804939700.pdfIn PDF document text
    • https://mojoranazo.weebly.com/uploads/1/3/4/4/134403481/74b7e23d578d2ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418791/normal_5fd60f6e45eab.pdfIn PDF document text
    • https://webenewosa.weebly.com/uploads/1/3/1/4/131409170/6271762.pdfIn PDF document text
    • https://cdn.sqhk.co/rogudokives/j9xhcgf/jebakiriwunobis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485435/normal_6013a287a3aed.pdfIn PDF document text
    • http://raifaisentapp.online/b_tech_information_technology_salaryvp4n9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419628/normal_602264c4a6bb6.pdfIn PDF document text
    • https://lolinukopo.weebly.com/uploads/1/3/4/3/134351434/2451190.pdfIn PDF document text
    • https://cdn.sqhk.co/selodiro/fhfhhij/oddbods_turbo_run_halloween.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/nunakixuma/cassette_tape_cover_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/barcode_app_free_android.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_off0000d7b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B6 4916 bytes
SHA-256: be15a91d320f02dcbfb1866c6846e58f4f16e81265fe97c1a40879cf640f18c6
font_01_sfnt_off0000e891.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE891 10964 bytes
SHA-256: 8bf02aa3a286725caa362d5944686645bdfe086e63ff85471ea79752e901eac6