Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b5d4b4fb1316b40…

MALICIOUS

PDF

73.0 KB Created: 2021-02-07 11:42:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f37793b2dacbb896889152c5e51f574f SHA-1: 48b3e73dcedbfb6286d53e3de36464438197b95f SHA-256: 5b5d4b4fb1316b40d483a4c9968d6fa84a2569371adc751048c1730699b5c68a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/123?utm_term=netup+apk+free+download+site PDF link annotation
    • https://cdn.sqhk.co/rojarasam/e1Yigjb/download_meetme_application.pdfIn PDF document text
    • http://hookup154.site/configuracion_electronica_completa_cadmio5fqqe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482406/normal_601742a6aea40.pdfIn PDF document text
    • http://rte-ita.fun/spelling_mastery_level_fepwhb.pdfIn PDF document text
    • http://microbladingcertificationdfw.org/43568115300v7vcn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366004/normal_6003b14ec5482.pdfIn PDF document text
    • http://pigovaze.iblogger.org/luxosenofopowu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460241/normal_5feb1af623006.pdfIn PDF document text
    • https://cdn.sqhk.co/likamigid/XHjhhfc/maths_crossword_puzzles_with_questions_and_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/jotenitix/ggik6uF/u_boat_simulator_apk_1._35.pdfIn PDF document text
    • http://microbladingeyebrowsdallastx.com/associated_press_stylebook_and_libel_manualfq9i3.pdfIn PDF document text
    • https://cdn.sqhk.co/disonixures/djfhbVv/kika_edgar_y_su_esposo_jorge.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://molugafew.epizy.com/lepefipagojosabujatagirub.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/fifajare.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/sql_left_join_subquery_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/altair_hypermesh_tutorials.pdfIn PDF document text
    • http://segisubab.epizy.com/digif.pdfIn PDF document text
    • http://nalakakowim.epizy.com/42185510188.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_off0000e245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE245 5160 bytes
SHA-256: 49db2717297ac181d814e5d479deb9a399c7fb3ed47ef0979bccd01487b78e46
font_01_sfnt_off0000f402.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF402 10420 bytes
SHA-256: bf498f836980d101ed4373cdf2549188c8b1a7d7356fa5eb09f58b7ba22b4f15