Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c95970580a36cf3…

MALICIOUS

PDF

68.3 KB Created: 2021-02-17 16:53:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 970c11b1e590f44cb2c17c4c128de010 SHA-1: 7cf5d68abd2adae09f469c03ae6985833485cb53 SHA-256: 6c95970580a36cf34312befdad684235fb156337f67558241ca85ab1de597113
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=1970+diana+v+board+of+education In PDF document text
    • https://cdn.sqhk.co/kifavubivelo/cibMdgi/black_friday_deals_clothes_dryer.pdfIn PDF document text
    • http://shoop-fk.ru/85705473799gzshl.pdfIn PDF document text
    • http://boothattendant.com/cookie_cats_pop_keys88kf5.pdfIn PDF document text
    • http://gezilobogobig.22web.org/arc_welding_risk_assessment.pdfIn PDF document text
    • https://cdn.sqhk.co/kewesowovim/hcTtBgd/matalan_christmas_runner.pdfIn PDF document text
    • https://cdn.sqhk.co/gegojagakexu/pSplhiF/real_racing_3_wiki_formula_1.pdfIn PDF document text
    • https://cdn.sqhk.co/gokovolasula/gjwEgiV/gimasipuzerobatowoxaj.pdfIn PDF document text
    • https://cdn.sqhk.co/dexizajifu/tgfLirx/running_fred_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zapajugadira/Uihvgca/epic_hide_and_seek_unspeakable.pdfIn PDF document text
    • http://shtangelkipokupkiitd.online/the_daily_ukulele_leap_year_editionhxdu5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tixinova.rf.gd/best_4k_wallpapers_for_mobile.pdfIn PDF document text
    • http://bovotefetola.rf.gd/cheese_pizza_nutrition_information.pdfIn PDF document text
    • http://monulaw.epizy.com/reading_comprehension_passages_2nd_grade_online.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/deus_ex_mankind_divided_beginners_guide.pdfIn PDF document text
    • http://fofeparulofiz.rf.gd/java_7_update_45_oracle.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_off0000ce61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE61 5340 bytes
SHA-256: 4f03f8f8faa37f7c7e162923f8f9740cecb2619969b39f3d60439c8b64510afd
font_01_sfnt_off0000e0a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A6 10504 bytes
SHA-256: b98c2028791132c2d5536643fb43b102566f555b1464a861c95a8ff49959684a