Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0fec092c0c91ded…

MALICIOUS

PDF

66.1 KB Created: 2021-01-27 19:52:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: fe5907b5dda7beb87dafb741ddd3e391 SHA-1: 8bfae4dfc8b18bb0ff368a332d063ae61c334dbc SHA-256: f0fec092c0c91ded1ae677d498106670a039d8fb3020f2a0e3938111d17bb940
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/123?utm_term=forces+and+motion+review+worksheet PDF link annotation
    • http://nufurimuler.iblogger.org/gorikirojikototanujo.pdfIn PDF document text
    • https://cdn.sqhk.co/titubebojek/je7geNa/60483176885.pdfIn PDF document text
    • https://cdn.sqhk.co/narobalof/aiihggc/kamek.pdfIn PDF document text
    • https://sinegozedajosor.weebly.com/uploads/1/3/1/8/131871849/e809d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://boxugajot.rf.gd/nikoxilo.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/3960707964.pdfIn PDF document text
    • http://zebigibozudival.epizy.com/tesav.pdfIn PDF document text
    • https://s3.amazonaws.com/nafamaragisek/idiots_guide_to_brexit.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/ae_form_55-_1.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/autismo_infantil_caracteristicas.pdfIn PDF document text
    • http://vovijez.epizy.com/yowhatsapp_app_free_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/beltone_amaze_android_streaming.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/32978381477.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/great_writing_4_4th_edition_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/email_template_introducing_your_company.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_off0000c5cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5CC 5320 bytes
SHA-256: 2b055fdc4c8b1736d42fe44afbbced6d1111fbc85bffa788e1baaba864242f07
font_01_sfnt_off0000d7cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7CD 10488 bytes
SHA-256: 3a9e98e73155bd63ddf96c794dd88e841bd0702f9c48bdcf997ea97a9dbc8b52