Malicious PDF — malware analysis report

Static analysis result for SHA-256 f58e73c2c483fe35…

MALICIOUS

PDF

67.6 KB Created: 2021-02-13 06:50:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6d8f6978ea57268ffdf285d9bd58767a SHA-1: cc4799c325942e071eb6d3b288d75026020a230d SHA-256: f58e73c2c483fe35f43f922af7d8b362f0256eafaeefe8dff242944cb6ea2f40
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wix?keyword=virginia+natural+resources+plants+and+animals PDF link annotation
    • https://zowololo.weebly.com/uploads/1/3/5/2/135294949/1b645.pdfIn PDF document text
    • https://xebuwonivaxatev.weebly.com/uploads/1/3/2/6/132696015/5803305.pdfIn PDF document text
    • https://wupebeziwemipi.weebly.com/uploads/1/3/5/3/135315897/8b008ee32fb.pdfIn PDF document text
    • https://jirilerimu.weebly.com/uploads/1/3/5/9/135967849/4822299.pdfIn PDF document text
    • https://tunuwadubozowe.weebly.com/uploads/1/3/4/3/134363043/45624afacad.pdfIn PDF document text
    • https://seruvukajobal.weebly.com/uploads/1/3/4/4/134479042/7199765.pdfIn PDF document text
    • https://cdn.sqhk.co/ketalidukepi/pZgfhf9/pulsera_smart_wristband.pdfIn PDF document text
    • https://cdn.sqhk.co/wazafanez/wsidcig/puwuviduxored.pdfIn PDF document text
    • http://zaxunux.iblogger.org/business_itinerary_template_word.pdfIn PDF document text
    • https://cdn.sqhk.co/zovitamojim/ihidgfk/lullaby_songs_for_baby_3_hours.pdfIn PDF document text
    • https://vusugurubem.weebly.com/uploads/1/3/0/9/130969976/9e31d22.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zuluvegutadetu.epizy.com/jaguar_car_wallpaper_image.pdfIn PDF document text
    • http://bavubuseji.epizy.com/somafozuvenozitiwowamu.pdfIn PDF document text
    • http://buxebawimiro.epizy.com/56525332304.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/lowegexolabelusonuva.pdfIn PDF document text
    • https://s3.amazonaws.com/tamovagag/avancemos_2_textbook_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/customer_ageing_report_transaction_code_in_sap.pdfIn PDF document text
    • http://nadovudeduxawos.rf.gd/53586201556.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_off0000cbe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBE2 5356 bytes
SHA-256: c0f5de413c227b6d9303de8b1015afb582a90ec22126e9839d5c3e1196557f2e
font_01_sfnt_off0000de09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE09 10336 bytes
SHA-256: bdb22e4673df5874f38553c75a7ca7d3f73efad9429e1eb5edde7d088c3a5c30