Malicious PDF — malware analysis report

Static analysis result for SHA-256 94ad81bb6c5dd38e…

MALICIOUS

PDF

73.3 KB Created: 2021-02-10 05:11:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 7f04e74fdf5fbbfe7b71035c13b2550c SHA-1: 8011da40c0a4886301c800860f83ebc43ea37ddf SHA-256: 94ad81bb6c5dd38e3ca98a711c46363714e09a4ec6e3da5ab0bf0b86edb94a72
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://maypoin.ru/123?utm_term=manntra+pressure+cooker PDF link annotation
    • http://geesecam.com/complex_sentences_worksheet_with_answer_keyyrdj9.pdfIn PDF document text
    • http://zdsshop.top/56921801811dqsk6.pdfIn PDF document text
    • http://timelessdecorum.com/project_manager_experience_letter_template3f75c.pdfIn PDF document text
    • https://lasuzolus.weebly.com/uploads/1/3/5/3/135315371/6986991.pdfIn PDF document text
    • http://islandlandscapesbb.com/volume_of_pyramid_worksheet_tesg88se.pdfIn PDF document text
    • https://cdn.sqhk.co/kavonalitego/jgX1ezj/54852672193.pdfIn PDF document text
    • https://cdn.sqhk.co/tofegejij/jhiicgc/18878745821.pdfIn PDF document text
    • https://vazanopika.weebly.com/uploads/1/3/4/8/134896022/6341232.pdfIn PDF document text
    • https://cdn.sqhk.co/zubuwebofe/MjeYE2y/vivuxixinojodepisogog.pdfIn PDF document text
    • http://getsalon.xyz/bootstrap_glyphicon_icontompl.pdfIn PDF document text
    • http://sunshop.pro/soundtrap_app_for_androidaarpl.pdfIn PDF document text
    • http://doxisolawasusig.66ghz.com/photos_ananas_free.pdfIn PDF document text
    • http://baranaydin.org/564087635292oeic.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://napubuxuwel.epizy.com/43224666036.pdfIn PDF document text
    • http://zakivijojinikij.epizy.com/19102659812.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_off0000e220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE220 4964 bytes
SHA-256: 90d824bf0d9d48bdddbb3909a43e064f921c7647db76d9a243a553dcac3fb1f7
font_01_sfnt_off0000f321.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF321 11040 bytes
SHA-256: b216916ab7e15026debde31842135f34015e46283d9908c1fcfeb2917a5c2121