Malicious PDF — malware analysis report

Static analysis result for SHA-256 bddd47340f610dfa…

MALICIOUS

PDF

74.0 KB Created: 2021-02-22 05:07:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 66b7da5b0df56b8ca4b450cb41deba39 SHA-1: 7169a0c84bc9da1e02c694335d190c4846aff013 SHA-256: bddd47340f610dfa4e0c38df271e89a0ef834e99469a037672626260e1300b56
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://jottigo.ru/wb?keyword=sex%20and%20the%20city%20samantha%20quotes PDF link annotation
    • http://wegijezunulej.22web.org/89479426198.pdfIn PDF document text
    • https://dizorewumuzesab.weebly.com/uploads/1/3/4/0/134012942/35db42f346f5.pdfIn PDF document text
    • http://nncucuucuc.space/opel_cascada_preislistet7drs.pdfIn PDF document text
    • https://zizusufake.weebly.com/uploads/1/3/4/6/134646877/d1e2d0dd5.pdfIn PDF document text
    • http://verifybadgehelp.com/byod_device_policy_templateexyxf.pdfIn PDF document text
    • http://alluniversity.fun/orgulloso_de_ser_chapin_nelson_lealb3nw7.pdfIn PDF document text
    • https://jejaxeka.weebly.com/uploads/1/3/0/7/130739175/merizul.pdfIn PDF document text
    • http://baranaydin.org/kanye_west_late_mp3_download9axam.pdfIn PDF document text
    • http://znatural.space/zafalamumawijifa0rea9.pdfIn PDF document text
    • http://classkaod.ru/bleacher_report_colts_vs_chiefsyk8r9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446930/normal_5fdbe2fd50c3b.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/zodererezuzuxi/93689467343.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/how_to_animate_for_free_on_android.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/pipuxunamaguxuje.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/list_of_regular_past_tense_verbs.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_off0000e4d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D3 5448 bytes
SHA-256: de43ce6fec33764857419317b691b655c79b2acaf237e00f7bd9cfec5cf25b6d
font_01_sfnt_off0000f742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF742 10648 bytes
SHA-256: 05474e14a3eea95ce4542f097ba312b6fbf5b3878cf791ca174292294a5a36e0