Malicious PDF — malware analysis report

Static analysis result for SHA-256 80b337bd6417abb3…

MALICIOUS

PDF

67.6 KB Created: 2021-02-23 09:12:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: daa734c534493871c9704c0c5b7d7e68 SHA-1: fb3b0f440da8621931c6290ef7fbb95469d693eb SHA-256: 80b337bd6417abb37224c9ca9c4ba20edb386bfc4c4e93f7fbe7d3ea4143eb7a
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://jacksth.ru/wix?keyword=spring+valley+high+school+athletics+columbia+sc PDF link annotation
    • http://axecheat5.xyz/fuvebefobeu5.pdfIn PDF document text
    • http://qlemelest.online/how_to_set_up_a_hamilton_beach_steamer4lv59.pdfIn PDF document text
    • http://fb-ig-violation.com/midland_x_talker_t10k31m4.pdfIn PDF document text
    • https://meruxanige.weebly.com/uploads/1/3/1/6/131636855/sosakumaberuguzemoji.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418574/normal_6008b32a1f446.pdfIn PDF document text
    • https://gunajogozezulom.weebly.com/uploads/1/3/5/3/135385825/8939609.pdfIn PDF document text
    • http://instofficial.online/848986081399nydg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447649/normal_5fe25e02caaed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478398/normal_5fd89ae5179db.pdfIn PDF document text
    • https://fofirajajamide.weebly.com/uploads/1/3/4/6/134643930/5274063.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370068/normal_601798f5e4e2c.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/venunamazozuzo/gate_2018_solution.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/teamviewer_14_free_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/salurigew.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/excel_vba_msgbox_yes_no_cancel.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_off0000ca76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA76 5752 bytes
SHA-256: 90d8f330c6dd60637c241d596a0bcb48dc95a0d0f053c009652e3c094257d86e
font_01_sfnt_off0000ddeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDEB 10360 bytes
SHA-256: 534011aa0e04bbd8736ed8f097288bf4f881462b4da59b17e6273ccb303905b5