Malicious PDF — malware analysis report

Static analysis result for SHA-256 af172cf8350b25e1…

MALICIOUS

PDF

74.0 KB Created: 2021-02-16 11:46:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7756cd72ad44b44a83e711e9e399054b SHA-1: fd135f426b222bdabc89e7adc0b2c648f739ff12 SHA-256: af172cf8350b25e1c455f30e5f60badc62277e5e8dca36e72778b0ce93d6ee63
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/123?utm_term=how+do+i+change+the+battery+in+my+oregon+scientific+weather+station PDF link annotation
    • http://juwatorota.22web.org/fesililuvijajemus.pdfIn PDF document text
    • http://ladunalufim.iblogger.org/best_handheld_game_for_8_year_old.pdfIn PDF document text
    • http://kebotup.66ghz.com/70887561503.pdfIn PDF document text
    • https://ramaxudefe.weebly.com/uploads/1/3/4/0/134042793/a59d1a9879f.pdfIn PDF document text
    • http://wipababotuzuke.iblogger.org/television_guide_brisbane_free_to_air.pdfIn PDF document text
    • http://okrasote.info/my_city_church_boyne_islandg6wtj.pdfIn PDF document text
    • https://mazerobuwi.weebly.com/uploads/1/3/1/3/131398334/rofusilanarukofo.pdfIn PDF document text
    • https://cdn.sqhk.co/sadebupunen/7IzdIhi/vesuzasofaxojisix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xumusemowujev.epizy.com/nikekowurapara.pdfIn PDF document text
    • http://zatopava.epizy.com/drunken_master_monk_guide_5e.pdfIn PDF document text
    • http://zowetilazu.rf.gd/ferrari_488_for_sale_houston.pdfIn PDF document text
    • http://mudefikireneb.rf.gd/admiral_car_insurance_certificate.pdfIn PDF document text
    • http://vexeger.rf.gd/carry_on_jatta_movie_480p.pdfIn PDF document text
    • https://s3.amazonaws.com/furunumaroxun/bible_apk_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/cisco_ccna_study_guide.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_off0000e182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE182 5700 bytes
SHA-256: 1dfae13b0c24931f7e16798ca0628c26ab8c5103d1ba996d53518efdc5984dc8
font_01_sfnt_off0000f4cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4CF 11116 bytes
SHA-256: 9a200534f914cf98cf28a2a12b87938c0fde0d612efd74f35b48eb712a19da87