Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed9328d258375afa…

MALICIOUS

PDF

80.6 KB Created: 2021-05-08 21:14:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 9802cacdecbfe89e2ffe9eb3f2557a1d SHA-1: 2fda6c0d664c6ff811586e39725b1203ba2573c7 SHA-256: ed9328d258375afa565c656960e5f6086cde654a5d76dd5f959462457f2b8a25
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains and utilize UTM parameters, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs point towards a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/strik?utm_term=3rd+book+in+left+behind+series PDF link annotation
    • http://shishkin-seed.xyz/james_allen_coupon_code_redditchnva.pdfIn PDF document text
    • https://cdn.sqhk.co/jatizaru/jaIOjfR/leduxazisepofofudonur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489412/normal_602c5ef3a72bb.pdfIn PDF document text
    • http://dkblogin-de.com/bahubali_movie_ringtone_pagalworldbpz6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368964/normal_605fda723b057.pdfIn PDF document text
    • http://community-day.ru/noam_chomsky_theory_of_languagespw0p.pdfIn PDF document text
    • http://bostpolamos.site/plein_ecran_premiere_pro8s3fq.pdfIn PDF document text
    • http://biomaniix.website/how_to_use_bose_tv_speaker_remote8pgey.pdfIn PDF document text
    • http://leopards.space/diagrama_de_flujo_de_proceso_industrial_ejemplogx3tz.pdfIn PDF document text
    • https://cdn.sqhk.co/jivomawufem/zjbjfvF/strategic_financial_management_book_download.pdfIn PDF document text
    • http://899themes-demo.ru/kavegaxudopopemewijifqezoh.pdfIn PDF document text
    • http://vadukut.iblogger.org/66971238089.pdfIn PDF document text
    • http://item-get.top/52035370038tnaor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454290/normal_5fe1394cc8bda.pdfIn PDF document text
    • http://sdl-trade.com/run_for_the_cure_charlottetowncejos.pdfIn PDF document text
    • https://cdn.sqhk.co/wofikubid/dOjh4Q5/17159988442.pdfIn PDF document text
    • http://imedo.ru/kugovomajukufutozo73m17.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fulapokop.epizy.com/7953816504.pdfIn PDF document text
    • http://fezuveguxala.epizy.com/descargar_gratis_libro_los_anunnaki_creadores_de_la_humanidad.pdfIn PDF document text
    • http://manovotiduzabes.rf.gd/latest_android_for_huawei_p8_lite.pdfIn PDF document text
    • http://fanuzisi.epizy.com/mudoxirigafilogogiv.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF045 4848 bytes
SHA-256: 27266228a213e8b5badbdf248fff9927442f0e507bf8a925c8b3cea2f5afb946
font_01_sfnt_off000100a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A8 10496 bytes
SHA-256: 10cef1c867bba53733dbe512903ef5d93a873a09b3ed95d64a0328811aef6d0f
font_02_sfnt_off000124b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124B4 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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