Malicious PDF — malware analysis report

Static analysis result for SHA-256 218b490a8fbf6b56…

MALICIOUS

PDF

72.2 KB Created: 2021-02-21 07:11:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d47283664412075f486dfe696d04c3d6 SHA-1: c8482895d3484082657ce15026d3c56016166b57 SHA-256: 218b490a8fbf6b56e3345b201691ead9a28b71be349f2cffa21cd0e26edeb2b4
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jottigo.ru/wix?keyword=manual+flash+power+calculator PDF link annotation
    • https://cdn.sqhk.co/mujexoxa/Hhi6jcV/xupofewukasebowosuriku.pdfIn PDF document text
    • https://guzepebizosi.weebly.com/uploads/1/3/4/8/134880367/6134665.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502567/normal_5fe143b3971c3.pdfIn PDF document text
    • https://cdn.sqhk.co/wukibezoso/UNjeK71/bake_it_paleo_carrot_cake_bars.pdfIn PDF document text
    • https://laregupofonel.weebly.com/uploads/1/3/4/4/134464195/gejejibuf.pdfIn PDF document text
    • https://sukodijam.weebly.com/uploads/1/3/4/5/134516983/kezasanukitad_wabevo_jijitezaw_sozunegav.pdfIn PDF document text
    • https://radifepibonavu.weebly.com/uploads/1/3/2/7/132712096/wezuwavotopujoxugu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374843/normal_601db0043b0a2.pdfIn PDF document text
    • https://ruxetire.weebly.com/uploads/1/3/1/3/131379726/67433d1d02ae82.pdfIn PDF document text
    • https://cdn.sqhk.co/videgogaf/fibhoib/79580268104.pdfIn PDF document text
    • https://luvofebujapima.weebly.com/uploads/1/3/0/9/130969865/madokoro.pdfIn PDF document text
    • https://cdn.sqhk.co/dibitarebizu/rkigibv/rozudupakil.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/radubozufiwo/bajaj_allianz_medical_claim_form.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/dofe_bronze_volunteering_assessors_report.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/6862177531.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/82627179493.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_off0000dcc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC3 5200 bytes
SHA-256: 39893cce7fc8a370728361f84f316ace95ac8309ad5d432ac431d2fc6f9d4c71
font_01_sfnt_off0000ee91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE91 10968 bytes
SHA-256: f72728008411ba7b02fb207dca03a1c3f9a46042cc129f282ae9c60b782df0d5

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