Malicious PDF — malware analysis report

Static analysis result for SHA-256 d32e5ca8fc0ffd68…

MALICIOUS

PDF

68.5 KB Created: 2020-10-25 08:35:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: c83c0083873fe90f26eb27dfdd829ae5 SHA-1: 32b46c756549202b15a52240694b18d6aa52f3fe SHA-256: d32e5ca8fc0ffd68c2ee41e433c67e5fbe06714531dede0bbe8c36514e78687e
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://cctraff.ru/pify?keyword=coloring+math+worksheets+5th+grade In PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/nesubine.pdfIn PDF document text
    • https://gomemetunugup.weebly.com/uploads/1/3/2/7/132712315/divevijapitarow_sulemavaxez_peleves.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/jepif_galawavosag_madofogapemet_situnofigukisok.pdfIn PDF document text
    • https://sasenepekevob.weebly.com/uploads/1/3/4/2/134266747/xubovorexixom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368949/normal_5f8968aae9099.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366987/normal_5f8e2d3584310.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380384/normal_5f8b3ecb939dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366045/normal_5f89cd689dc3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374024/normal_5f89dcc6ad2d7.pdfIn PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/rezasokeri_vilatutamonobar_dogosurikenime.pdfIn PDF document text
    • https://gogebuzavoriro.weebly.com/uploads/1/3/2/6/132681212/1163986.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/1949415.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bc2ef1f-9b48-4fe2-8318-9a590ffb485d/fijomovazu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3affa6ca-8c77-48f8-91f7-c595f1770d28/38643226744.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/198e292f-da36-43fa-a257-0500e0338e36/51570037712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/6051/9879/files/xetalotiguvapiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1750/1853/files/xovepebosowokopale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5055/5799/files/native_american_eagle_tattoo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3269/0339/files/27125259477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4488/1059/files/appium_desired_capabilities_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/62486507453.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/relationship_between_market_segmentation_targeting_and_positioning.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/aircraft_engine_types.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/slope_intercept_form_graphing_worksheet.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_off0000cf2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF2C 5424 bytes
SHA-256: 8fec5d483ef994343a4033017f37152d7c9dfb13d3fb870c9040067a74cad6dc
font_01_sfnt_off0000e17f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE17F 10252 bytes
SHA-256: d2c5fa702fb304b272913b9d8bff1ad4dc231ed885be4bb6b608cb346f0836f1

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