Malicious PDF — malware analysis report

Static analysis result for SHA-256 972cdff0cae53381…

MALICIOUS

PDF

68.9 KB Created: 2021-02-09 02:51:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 40258d8469eedc75844e636c2b25834f SHA-1: 108c7d5a89dd19e63cbba8b2539f445b1e34ca4f SHA-256: 972cdff0cae53381ca5d92ce58c408f28318860af17462fb9697c9705f236b42
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/wb?keyword=aurasma%20tutorial%20pdf In PDF document text
    • http://whitecheat.xyz/puzzles_and_dragons_tier_listcq623.pdfIn PDF document text
    • https://cdn.sqhk.co/motulobugaji/bwRYhhl/jozavanav.pdfIn PDF document text
    • http://greyfruit.space/cfpb_reportable_hmda_data_2018ad8ei.pdfIn PDF document text
    • http://xapizokawe.iblogger.org/60939151557.pdfIn PDF document text
    • http://bestrongbyg.com/coraline_hd_online_dublado6lc5g.pdfIn PDF document text
    • http://chelobaka.space/watch_my_hero_academia_heroes_rising_google_docsasmup.pdfIn PDF document text
    • http://helps-lnstagramcopyrights-about.com/simplifying_rational_equations_worksheetglnbq.pdfIn PDF document text
    • http://piter.store/rugaferimapifekafudiwevm1iox.pdfIn PDF document text
    • http://mailedflkf.site/851373015702g7dd.pdfIn PDF document text
    • http://barberking.best/2982186347mmecy.pdfIn PDF document text
    • http://maxapur.22web.org/online_bunker_platform.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://degepedafapuf.epizy.com/xubuzinewi.pdfIn PDF document text
    • http://kubenusuwixop.rf.gd/20165803271.pdfIn PDF document text
    • http://sefibonep.rf.gd/53050074227.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/modelos_de_diagnostico_empresarial.pdfIn PDF document text
    • http://posijibanif.epizy.com/bewars_movie_video_songs_tinyjuke.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/citroen_c5_2010_workshop_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/20273298749.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_off0000ceb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB3 5176 bytes
SHA-256: e5173160fc38190f87b4c7c3fc86e128e1c345e70ad2a38a4eea2c3e81bb2b1b
font_01_sfnt_off0000e037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE037 12184 bytes
SHA-256: 48812bd78a78b29554c2cadb4623f27c89db15453578d48b5d5e9b35956bb1c9