Malicious PDF — malware analysis report

Static analysis result for SHA-256 adab590498913d88…

MALICIOUS

PDF

71.1 KB Created: 2021-03-04 13:48:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: bdee607cff99c36de976f28887b71eac SHA-1: 1128d1662e96c899204951f5b842c6206904fbc3 SHA-256: adab590498913d884a057720d463adb8efb16611b12d4e5a6f6c891db2b878cd
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://golowaki.ru/wix?keyword=physics+forces+worksheet PDF link annotation
    • http://xidufefonudug.sportsontheweb.net/wosutugajisajor.pdfIn PDF document text
    • https://dagaroxir.weebly.com/uploads/1/3/5/9/135973008/rakuputudex-lowugixipajojub-wulifud.pdfIn PDF document text
    • http://pinegobojefo.getenjoyment.net/how_to_fill_out_credit_reference_on_rental_application.pdfIn PDF document text
    • https://cdn.sqhk.co/gaxudofexal/jhrjagg/65648005516.pdfIn PDF document text
    • http://linavaluviriv.getenjoyment.net/45615832627.pdfIn PDF document text
    • https://cdn.sqhk.co/winudesuw/bviiyge/ketetede.pdfIn PDF document text
    • https://cdn.sqhk.co/bifugudawesu/lgfjbhd/62209809911.pdfIn PDF document text
    • https://lesitoziperitij.weebly.com/uploads/1/3/4/3/134381346/kuburelebanelome.pdfIn PDF document text
    • http://kirudikegopoded.sportsontheweb.net/computational_fluid_dynamics_jobs_australia.pdfIn PDF document text
    • https://rujenamifib.weebly.com/uploads/1/3/4/6/134652207/nufipozuvetevowa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ralakevitodabaj.epizy.com/28683150870.pdfIn PDF document text
    • https://a179b4bb-f9e1-4b0b-8685-f881d2afde68.filesusr.com/ugd/0fdb6d_14bcfde8c64d4241961f124a0e9aa128.pdf?index=trueIn PDF document text
    • http://jiwerefupuz.epizy.com/womawejativerovibe.pdfIn PDF document text
    • https://c5e26362-acc3-4c40-9db4-ce0cbd355080.filesusr.com/ugd/681527_c5a0f1683c6c4ee498c4eba480c65444.pdf?index=trueIn PDF document text
    • https://2a07c75e-e898-48ba-b326-4cccc82d0599.filesusr.com/ugd/ff154e_e637769df13347d4b17927b1e9f0f57e.pdf?index=trueIn PDF document text
    • http://futakanawus.onlinewebshop.net/sedimuxobofujazigaj.pdfIn PDF document text
    • https://ce2645ba-e89a-43d5-afff-5c0150757291.filesusr.com/ugd/c63dba_05c2f3ac36f04174be56f59098a1d4b0.pdf?index=trueIn PDF document text
    • https://6baea7ca-81e4-4a11-8410-716433a99462.filesusr.com/ugd/764aaa_bdcda6eda2564d2ea72ed4e693c5bdf2.pdf?index=trueIn PDF document text
    • https://b1c30c75-ab46-439a-884d-3836ae4b8a49.filesusr.com/ugd/2d1648_40f3e93cfbf14f59aa261edf6f5cbc1b.pdf?index=trueIn 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_off0000daa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA8 4988 bytes
SHA-256: 28aa2517ac7a9816b758f3a3454b0274a3ae9c934c97653f8905c2a23830a276
font_01_sfnt_off0000ebb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB9 10536 bytes
SHA-256: 4fc5bfc1d1cf1ac04d10d211e20eef73b10dd644b172f0f558102e93c8884796

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