Malicious PDF — malware analysis report

Static analysis result for SHA-256 7105d21ef3a9ee43…

MALICIOUS

PDF

67.3 KB Created: 2021-02-28 15:00:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6d74edd94a7b8582ef4290e7bea40365 SHA-1: 020513cd9aaa6f3d69e76d716b5140ecb60d7840 SHA-256: 7105d21ef3a9ee43de08b01f2a0b06c441b35456ca5435e3eb44b9408308c308
186 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.
  • 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.
  • 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://seumenha.ru/award?keyword=powerpoint+on+figurative+language+5th+grade PDF link annotation
    • https://lolijigi.weebly.com/uploads/1/3/4/7/134700793/1902333.pdfIn PDF document text
    • https://lalidusuferub.weebly.com/uploads/1/3/4/4/134440540/3895675.pdfIn PDF document text
    • https://zotolibufu.weebly.com/uploads/1/3/1/0/131069899/45b6bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487927/normal_6009f4d633787.pdfIn PDF document text
    • https://minoximamus.weebly.com/uploads/1/3/1/4/131437876/wewebegenekit-rosusanimovizav-goterari-sarafatexezili.pdfIn PDF document text
    • https://sofakixejiz.weebly.com/uploads/1/3/4/2/134265497/fomigoxiluduxuwix.pdfIn PDF document text
    • https://sojuvamufivuleb.weebly.com/uploads/1/3/0/8/130874470/632ab9cef724f.pdfIn PDF document text
    • https://guzepebizosi.weebly.com/uploads/1/3/4/8/134880367/4353908.pdfIn PDF document text
    • https://rowimunikak.weebly.com/uploads/1/3/5/3/135346477/sofawet.pdfIn PDF document text
    • https://kegegizexuf.weebly.com/uploads/1/3/4/0/134042356/634464.pdfIn PDF document text
    • https://doleroxewaforud.weebly.com/uploads/1/3/4/3/134322791/kupilipolome.pdfIn PDF document text
    • https://vexepagofebove.weebly.com/uploads/1/3/4/8/134866030/fopirunutuzuguxo.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/nuselufuzo/99589249551.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/genie_model_2024_won_open.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_off0000cc33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC33 5400 bytes
SHA-256: 811632966db4aac65b0577d409556af71e914b82216a790ae3796e033b8025e6
font_01_sfnt_off0000deab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEAB 9816 bytes
SHA-256: 078a942c522079c52c74136892a24535e70ced96504a59a4a656a082117e44f6

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