Malicious PDF — malware analysis report

Static analysis result for SHA-256 71d4895e1ab567b0…

MALICIOUS

PDF

72.7 KB Created: 2021-02-28 23:07:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8dae6834013319eaa717c7ae80c37eb4 SHA-1: f0a4503c2999693f17dd719388dfdaa8a78ca426 SHA-256: 71d4895e1ab567b03db0f9655f2fcb0896a0a859f7339699a04d135e95019bb7
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://dugedepap.ru/wix?keyword=bonding+basics+ionic+bonds+worksheet+answer+key PDF link annotation
    • https://cdn.sqhk.co/lexaxemiji/bLhcgeb/96789207077.pdfIn PDF document text
    • https://cdn.sqhk.co/wanadujogo/SjeNxbL/91245417796.pdfIn PDF document text
    • https://jerefukixuludew.weebly.com/uploads/1/3/4/6/134686450/mifelesu_simupiruved.pdfIn PDF document text
    • https://nanoxoxudotu.weebly.com/uploads/1/3/0/8/130814682/6174101.pdfIn PDF document text
    • https://mafalipakirufez.weebly.com/uploads/1/3/5/3/135347960/7e1fbccd.pdfIn PDF document text
    • https://zapedumukovig.weebly.com/uploads/1/3/0/7/130775012/714146.pdfIn PDF document text
    • https://pumutetigowon.weebly.com/uploads/1/3/4/6/134699291/galatewuwoje.pdfIn PDF document text
    • https://lesikikonojen.weebly.com/uploads/1/3/0/7/130740189/kofekisupazi-sijax-pemurepisukotuz-pokijuzixizad.pdfIn PDF document text
    • https://minadefimufev.weebly.com/uploads/1/3/4/6/134635785/4582196.pdfIn PDF document text
    • https://cdn.sqhk.co/voduzetefir/5Tgfghe/cute_cartoon_couple_status_video_download_sharechat.pdfIn PDF document text
    • https://jobalexaxikut.weebly.com/uploads/1/3/4/8/134892204/kazigewikixepijanime.pdfIn PDF document text
    • https://jigaposu.weebly.com/uploads/1/3/5/3/135397088/ad766d212a613a.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/metubevozisul/la_valse_d_amelie_piano_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/jikenafufoxagoporijeno.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/cdac_entrance_exam_questions_and_answers.pdfIn PDF document text
    • http://damagofozoronu.epizy.com/dirk_gentlys_holistic_detective_agency_series_3.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/resume_format_for_business_school_application.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/solarwinds_advanced_subnet_calculator.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_off0000dff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF9 5616 bytes
SHA-256: 2c2b8c344a93ea5445713d1819d2f264b700ea3e67924bd96cd913989c6b18a3
font_01_sfnt_off0000f32e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF32E 10152 bytes
SHA-256: 231759a2bd312cb5ac5a1c1612e582e1c761f76457a74c2a1b8a86e2cb256c1c

Open this report in the interactive analyzer, or submit your own file for analysis.