Malicious PDF — malware analysis report

Static analysis result for SHA-256 547928c3a32ff67a…

MALICIOUS

PDF

75.8 KB Created: 2021-03-13 20:31:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: f06d5ff40fe45d4eda0a0f5d74e4f376 SHA-1: bbcebf874ac2030bdb3b47c2ae8920275e82f79f SHA-256: 547928c3a32ff67a9fc8cf76008c4cd9209b803ba5fd820306eb51964b7ab203
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 high likelihood of malicious intent. The document contains numerous embedded URLs pointing to disposable domains, suggesting a link farm or phishing operation. The presence of external URIs and the 'link farm' heuristic indicate the document's primary purpose is to redirect users to potentially harmful websites.

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://jumiwimov.ru/strik?utm_term=nutribullet+rx+reviews+uk PDF link annotation
    • http://baffer-shop.space/best_css_coursezv2zg.pdfIn PDF document text
    • http://idealicaitalia-ufficiale.site/41824846264e3jh5.pdfIn PDF document text
    • http://all-system7.xyz/9244851109591d2k.pdfIn PDF document text
    • http://svoydvalend.xyz/382108452zps9.pdfIn PDF document text
    • http://usmileofficial.site/genupcor3h.pdfIn PDF document text
    • https://tigibivimibi.weebly.com/uploads/1/3/4/3/134344299/widalugifebugopaleg.pdfIn PDF document text
    • http://magazinrf.xyz/dunozarukuruwanikalo3iot.pdfIn PDF document text
    • https://rufuroborotefin.weebly.com/uploads/1/3/1/8/131856068/2848298.pdfIn PDF document text
    • https://jonaduxito.weebly.com/uploads/1/3/1/3/131384171/kafosiwevawede-tugolokaregix-jagoliwevepavat.pdfIn PDF document text
    • https://mirafovunezozur.weebly.com/uploads/1/3/4/3/134339146/9240215.pdfIn PDF document text
    • http://todayit.pro/free_marshmello_ringtones_offline_music_apps331g9.pdfIn PDF document text
    • http://copyright-securityx.com/android_screenshot_app_apkaekpj.pdfIn PDF document text
    • https://lufuwoxataj.weebly.com/uploads/1/3/1/3/131379696/fb6c3954fb5bc.pdfIn PDF document text
    • https://wobikuneli.weebly.com/uploads/1/3/2/7/132741052/5117138.pdfIn PDF document text
    • http://tedurelaseji.mygamesonline.org/vifoxu.pdfIn PDF document text
    • https://xelipifexejup.weebly.com/uploads/1/3/4/8/134848770/gavupesorajovu_woronud_susezow_kusolino.pdfIn PDF document text
    • https://mabamigetope.weebly.com/uploads/1/3/4/4/134493328/buwafel-tilexukixamija.pdfIn PDF document text
    • http://swiss-gear.store/basic_html_tags_list_with_description6olhc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bavotuvezomevi.myartsonline.com/are_the_infrared_heaters_worth_it.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/feb91122-1c26-45ae-9133-086fe40a53b2/bilesibuvaxuwoja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fa3f0a1-f295-4218-92eb-1f1b6fc86474/tukefujo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37fdd658-077c-42a9-92db-54ee081978b8/jutixododazuzis.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_off0000ec75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC75 4864 bytes
SHA-256: 38c52a4a6752d6e2b18cfe38aefe7618fab0976ecf231bb7902953145e887a64
font_01_sfnt_off0000fd2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD2B 10388 bytes
SHA-256: 061f6da97159dd3148779eae526a3365a60c92b7f2a532881ea7ed4e1861fecc

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