Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e93e43b97c68739…

MALICIOUS

PDF

77.7 KB Created: 2021-06-14 05:08:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 8bff798cd8584722ad0d657cbed02635 SHA-1: a89e2c283d3b00de02b0bcd977a8a14fd21ec8af SHA-256: 5e93e43b97c68739bf6fd6dd5deab5d9317773979789a52e8dff6783645de366
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with a primary external URI pointing to 'https://nomylo.ru/pbw?utm_term=tech+ppt+template', suggesting a lure for users seeking templates. The PDF also functions as a link farm on disposable hosting, further supporting a phishing or malicious redirection scheme.

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://nomylo.ru/pbw?utm_term=tech+ppt+template PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426679/normal_6049950d78e11.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463287/normal_6007b2204facb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499285/normal_5fc7f1116a6e3.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4465145/normal_60b761edc4cad.pdfIn PDF document text
    • https://ferodamogeko.weebly.com/uploads/1/3/5/3/135330017/1644253.pdfIn PDF document text
    • https://nakigere.weebly.com/uploads/1/3/4/6/134608851/jajukibaveweni_kefugurozerave_bagizezumu_talejapuzevis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sikawejedi.pbworks.com/f/99213434655.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68d13209-f01b-47b7-8aaa-086c8b8786d6/taylor_food_scale_manual_3919.pdfIn PDF document text
    • http://fumiripij.pbworks.com/f/denolababobipogus.pdfIn PDF document text
    • http://ritijix.pbworks.com/w/file/fetch/144529539/which_penny_stocks_to_buy_today_in_india.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0652110f-2289-402e-8226-e33510a12430/when_can_you_book_disney_2021_packages.pdfIn PDF document text
    • http://wedezim.pbworks.com/w/file/fetch/145148868/zikafu.pdfIn PDF document text
    • http://niputolodab.pbworks.com/w/file/fetch/145201641/48157079846.pdfIn PDF document text
    • http://kokupaxuto.pbworks.com/f/download_my_stupid_boss_2_indoxxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/260aeb4e-d7dd-4c4e-92dd-fdff4df9060e/mind_power_techniques_book.pdfIn PDF document text
    • http://kufavuva.pbworks.com/f/school_of_dragons_mod_apk_2020_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63a1a3d6-f625-46c3-b059-e4cd68949485/lets_build_a_cladogram_worksheet_answers_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d1a6bb9-9a37-4540-b172-cafc559cd735/korajugine.pdfIn PDF document text
    • http://mukonisu.pbworks.com/f/87865889103.pdfIn PDF document text
    • http://gupipax.pbworks.com/f/61877102830.pdfIn PDF document text
    • http://najapenoz.pbworks.com/w/file/fetch/144837939/vaxukesedilew.pdfIn PDF document text
    • http://masigali.pbworks.com/w/file/fetch/144898191/syllabus_latex_template.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_off0000f521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF521 4848 bytes
SHA-256: 73a69d470ba6a7f35a192501851293b2c84c5c0072728e4a444faa0d092cc0f3
font_01_sfnt_off0001057a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1057A 10488 bytes
SHA-256: b6234932938a0a47d3691c0959681350826ba2c2bf444549605c40eac3d616aa

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