Malicious PDF — malware analysis report

Static analysis result for SHA-256 89e11f05e2103640…

MALICIOUS

PDF

69.4 KB Created: 2021-01-19 17:16:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 577e83d5e3347d8fb00c04adf3934e0b SHA-1: b7a222d1b981d90799392f0b8ce3a1892c8f2314 SHA-256: 89e11f05e21036405e0f29129eaa0330137737b57003e4951071439c829796f8
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/wb?keyword=hill%20climb%20racing%20play%20online%20free In PDF document text
    • https://site-1179590.mozfiles.com/files/1179590/japantaxi_app_review.pdfIn PDF document text
    • https://site-1227526.mozfiles.com/files/1227526/league_of_legends_garen_guide_deutsch.pdfIn PDF document text
    • https://xulisonifob.weebly.com/uploads/1/3/2/6/132695361/jibazovodiwib.pdfIn PDF document text
    • https://bavopasivivewid.weebly.com/uploads/1/3/0/7/130738836/xevozesuvajag-mazemiselapem.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466151/normal_5fe5e96ba92d7.pdfIn PDF document text
    • https://xaporavuxeboj.weebly.com/uploads/1/3/2/6/132695407/7c6ff10644.pdfIn PDF document text
    • https://site-1172860.mozfiles.com/files/1172860/moment_format_date_time.pdfIn PDF document text
    • https://cdn.sqhk.co/feduvefas/jhhLjbF/pinball_space_cadet_para_android.pdfIn PDF document text
    • https://lemurowivavaxub.weebly.com/uploads/1/3/4/4/134404776/9168365.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379961/normal_5f9cb83982525.pdfIn PDF document text
    • https://cdn.sqhk.co/zokelofid/gghh3gh/personal_swot_analysis_test_online.pdfIn PDF document text
    • https://nofakefol.weebly.com/uploads/1/3/4/3/134341926/mudojerolatanewodux.pdfIn PDF document text
    • https://cdn.sqhk.co/dedejosewor/cjjjahc/liwus.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/lezopobigeza/vanilla_wow_priest_talent_build.pdfIn PDF document text
    • http://zovaner.rf.gd/69266244921.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_off0000d41c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD41C 5360 bytes
SHA-256: f3239b733a6d24a324f6cc70f01de136bdb1f4b2e643a5f1055ce3935ce607e4
font_01_sfnt_off0000e64b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE64B 10084 bytes
SHA-256: c04ed1a8c1494022b37c98a9b58a0d0940bb5dc4734c493ffd635e10773ae82e

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