Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d4ee0c1baee90eb…

MALICIOUS

PDF

67.8 KB Created: 2021-02-25 22:03:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: aebae538353cc892396a9bbe08699bf4 SHA-1: d13a2c5bd959433e6d65a5f54fb8083bdda9eccd SHA-256: 4d4ee0c1baee90ebfc6b24339293c5dab46aed407bec8cc48e3983e67c3927c4
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://yafferge.ru/wix?keyword=stanford+prison+experiment+worksheet+answers In PDF document text
    • http://findattime.com/popesepaleduxijuzaripojuxov4z.pdfIn PDF document text
    • http://winovigamaj.mygamesonline.org/xuwafurukimuje.pdfIn PDF document text
    • http://zonizubiro.getenjoyment.net/hot_caramel_latte_dunkin_donuts_calories.pdfIn PDF document text
    • http://closemaze.com/letter_of_creditable_coverageb5w4e.pdfIn PDF document text
    • http://mutujejeturuduf.medianewsonline.com/fire_and_ice_perfume_walgreens.pdfIn PDF document text
    • http://xafopawiki.medianewsonline.com/80018926759.pdfIn PDF document text
    • http://lunatan.medianewsonline.com/97256886729.pdfIn PDF document text
    • http://nuloriwilorij.scienceontheweb.net/rizisorutijuneligo.pdfIn PDF document text
    • http://tufuwavaziga.mygamesonline.org/joy_luck_club_book_club_discussion_questions.pdfIn PDF document text
    • http://rawoxaxevog.mygamesonline.org/how_long_does_it_take_for_an_atomic_clock_to_set.pdfIn PDF document text
    • http://bodyita.space/syllogisms_deductive_reasoning_answers1b1ug.pdfIn PDF document text
    • http://hookup666.site/born_a_crime_summary8hfbw.pdfIn PDF document text
    • http://vipadobotisituz.mygamesonline.org/software_testing_jobs_in_canada_quora.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lonozote/gogiwoxesalu.pdfIn PDF document text
    • http://tivakifuzir.atwebpages.com/nigarifes.pdfIn PDF document text
    • http://zubiluwetij.myartsonline.com/89548353986.pdfIn PDF document text
    • http://zogosugo.onlinewebshop.net/motorola_g6_play_case_and_screen_protector.pdfIn PDF document text
    • http://kewevagisugimuw.onlinewebshop.net/zekovibetomuvubawo.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_off0000cc10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC10 5576 bytes
SHA-256: 9ddc9ce661400e22e9a6299f15fcde567a153f313c05d7219504b1170d17ab4f
font_01_sfnt_off0000def8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF8 10248 bytes
SHA-256: 22a748cc37bc248193d66b4f5fc6dde26c9fdf4fb4e0e2817e6a35d41ab988c5