Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ce8916db8df8f78…

MALICIOUS

PDF

69.4 KB Created: 2021-02-25 08:07:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0e3f40f3dd7ac78af723acd9c77f3e48 SHA-1: 4083364032169e84fe1fd19b533fbab0af6f2b2b SHA-256: 3ce8916db8df8f781152566740d1297dc0d02aa96a110f5cb106e3cc31d4d605
194 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.
  • 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.
  • 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/award?keyword=camp+chef+pellet+grill+cover In PDF document text
    • http://gedagefi.22web.org/batman_vs_superman_wallpaper_android.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377656/normal_5fc91743b3493.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461516/normal_600118932082e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461791/normal_60005f9411eeb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500882/normal_5fcc6ec8be485.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461763/normal_5feb5f342aef6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393637/normal_5ffd6257e4775.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bemijeranokawu.epizy.com/41308981749.pdfIn PDF document text
    • http://sobibuxasegisun.rf.gd/60786913584.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/55964561385.pdfIn PDF document text
    • http://kakafemapekumu.epizy.com/queen_size_bed_sheet_dimensions.pdfIn PDF document text
    • http://jisijuvod.myartsonline.com/58862182087.pdfIn PDF document text
    • http://zinowor.epizy.com/tv_guide_usa_nba.pdfIn PDF document text
    • http://kajonamopesubom.rf.gd/how_many_calories_in_a_dunkin_refresher.pdfIn PDF document text
    • http://povuputuk.epizy.com/6802667244.pdfIn PDF document text
    • http://dugubokig.rf.gd/oreck_xl_hand_vacuum_cleaner.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_off0000d3c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C4 5216 bytes
SHA-256: 762bc3def76a70857464434464d065aa1cdb9618a67aac227fb5b6ab67319617
font_01_sfnt_off0000e562.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE562 10276 bytes
SHA-256: 9d14ba25f176fcadb96870459ca9f0edf4b61a0f227975e1564b8da0f3c791da