Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3688ba14bb607a4…

MALICIOUS

PDF

73.1 KB Created: 2021-03-05 14:38:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1f1e5879b6ca07c2d3604923b54f93cd SHA-1: 0a3f2e3d20ff08a9c24383ad7a7a9980f20a3a25 SHA-256: c3688ba14bb607a41455bd85ff6aaf0f02cf55d1f2f410980a38d074b2444d46
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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 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/wix?keyword=research+informed+practice+in+education In PDF document text
    • https://vonefemupeme.weebly.com/uploads/1/3/5/9/135957005/sidebulamozam-gukajivakadu-pupab-ridex.pdfIn PDF document text
    • https://watowerapomos.weebly.com/uploads/1/3/0/7/130775357/7933682.pdfIn PDF document text
    • https://zefemebok.weebly.com/uploads/1/3/0/7/130775969/gitowememixoker.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484363/normal_5ff5298ace4bb.pdfIn PDF document text
    • https://xitolomeka.weebly.com/uploads/1/3/4/0/134012462/redewozevowemo_puxapuzix_zikujusunufuto_nufoki.pdfIn PDF document text
    • https://jawuvufos.weebly.com/uploads/1/3/4/8/134856807/d93be14aadb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403674/normal_5fdd4710b0f6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384470/normal_6023c91c21b81.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479705/normal_600338d1379ad.pdfIn PDF document text
    • https://basitonivi.weebly.com/uploads/1/3/4/5/134584834/dafodizupijozov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366389/normal_6013e830d52af.pdfIn PDF document text
    • https://kulaxebide.weebly.com/uploads/1/3/2/3/132302774/widigeri_lixufuvubekizi_vorun.pdfIn PDF document text
    • https://luzatewuxajexi.weebly.com/uploads/1/3/4/2/134265782/7253575.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/8d32ea47-7347-456c-9734-e0d58046a6db/can_you_buy_ocarina_of_time_on_switch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bd6a72a-3d8f-42ec-b19b-c2a7ade40093/excel_vba_message_box_input_date.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/vejitefuvisasere.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fa077a5-48fa-40d5-98c7-cc36ee7b9bc8/electrical_safety_on_small_construction_sites.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/morobe.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/icebreaker_games_for_online_dating.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/896e6985-fab2-40d3-9a8f-70b81ec180a1/how_to_program_xfinity_xr5_remote_to_vizio_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/blackburn_college_apprenticeship_application_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82085cfc-29d1-4980-baf5-1e647d7c6238/black_ted_dekker_graphic_novel.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/zedifapoxegitiwuzebuwaxe.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/mewowigorakonuzizawomowu.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_off0000dfef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFEF 5368 bytes
SHA-256: 829ef1a5320a86512ae74a3df420d52aa59b065fbb1ea93db2abba55719f6549
font_01_sfnt_off0000f210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF210 10728 bytes
SHA-256: c152d1ffae60a36f6ac1bebce4b5b59b45d34a3dd41887cedb681c82d82b8513

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