Malicious PDF — malware analysis report

Static analysis result for SHA-256 c132da8a80431dce…

MALICIOUS

PDF

72.4 KB Created: 2021-02-21 21:13:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: cae3a75785e736284133a76efb4c92fa SHA-1: 7be1ab7c9d6cb41c47cac9f53ef1b5b81dad0f6e SHA-256: c132da8a80431dce3120002b49e48c3ed4384e8472b082b7c87dedb2390eaeea
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/aws?utm_term=how+to+fix+a+furnace+pilot+light PDF link annotation
    • http://jovalevuwalu.22web.org/vfx_artist_cv_template.pdfIn PDF document text
    • https://cdn.sqhk.co/gogojiranat/dhde2hh/45365655460.pdfIn PDF document text
    • https://cdn.sqhk.co/jogepirar/DjjBkje/how_to_change_my_server_location_windows_10.pdfIn PDF document text
    • https://cdn.sqhk.co/mudonisogub/MjaVghV/device_manager_mac.pdfIn PDF document text
    • http://febisulel.22web.org/51146361565.pdfIn PDF document text
    • https://cdn.sqhk.co/talurelope/he3jeic/91164030680.pdfIn PDF document text
    • https://cdn.sqhk.co/mobubivifa/fifgee7/fake_gps_location_android.pdfIn PDF document text
    • https://cdn.sqhk.co/kataregulu/i3ujhji/88470535675.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dirunixilazor.rf.gd/87384235219.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/amoeba_sisters_meiosis_worksheet_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/staples_business_card_template_12527.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/minecraft_for_pc_java_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/zugurabaludido.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/48386465069.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/10082768340.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_off0000df69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF69 5220 bytes
SHA-256: 06d2dfc1396e16a5f9c1487954f83a88bf102e4889f9bf2217f4b20d4df86ee1
font_01_sfnt_off0000f13d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF13D 10448 bytes
SHA-256: 8aba0d3f23387e9520ad659766d3901163eb389b797707313f8423f95c2d571d