Malicious PDF — malware analysis report

Static analysis result for SHA-256 07c9d70f6db33613…

MALICIOUS

PDF

65.6 KB Created: 2021-02-25 14:44:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0da7841cd388f4bd75ef50031053991a SHA-1: cb969be036e9206610d8b4e6c8e8b87434255a79 SHA-256: 07c9d70f6db3361352a64c5c5a2afc9157027cbb631cfd4a388c04fe2a0dcf07
244 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
  • 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.
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/123?utm_term=is+monster+high+electrified+on+netflix In PDF document text
    • https://zadobezaja.weebly.com/uploads/1/3/0/7/130775221/9dc5f07d.pdfIn PDF document text
    • https://jukonejidar.weebly.com/uploads/1/3/4/8/134876273/9133508.pdfIn PDF document text
    • https://ladifibefumuxuw.weebly.com/uploads/1/3/4/3/134353250/5770550.pdfIn PDF document text
    • https://fogorito.weebly.com/uploads/1/3/5/3/135322632/0af8228f1d1.pdfIn PDF document text
    • https://balikawe.weebly.com/uploads/1/3/4/6/134659528/cd98a0981.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423136/normal_5ffd1caf4ea41.pdfIn PDF document text
    • https://ledijonag.weebly.com/uploads/1/3/4/6/134689342/45cd6d78913.pdfIn PDF document text
    • https://rikisefunem.weebly.com/uploads/1/3/5/3/135337995/8077944.pdfIn PDF document text
    • https://mogisitubetaw.weebly.com/uploads/1/3/4/4/134496388/fanobumez-ziromoxeton-xifegokajesew.pdfIn PDF document text
    • https://kuxiwapanipajof.weebly.com/uploads/1/3/0/9/130969705/5406074.pdfIn PDF document text
    • https://gekitudofu.weebly.com/uploads/1/3/4/4/134403565/pirititivadikaduxox.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/liwara/material_safety_data_sheet_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/whatsapp_app_kaise_kare.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/camscanner_premium_apk_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/47756464396.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_off0000c746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC746 5232 bytes
SHA-256: 68caa4ae840e40ceda18343ab493c52a48e3603419bff8780babd5fb2bb0c643
font_01_sfnt_off0000d8ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8EF 9540 bytes
SHA-256: a6257e68c2dc3882f1f2d674ef2693531c99eb4fae3215c9d1b67e52b24aaee1

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