Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a7aeb7434d9efc6…

MALICIOUS

PDF

67.5 KB Created: 2021-02-22 14:41:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: dc7e8f2cb73487ebd877fd9a34dba51e SHA-1: 009ef61429f79cc35f92779cd05ea5e58f4f8f8f SHA-256: 7a7aeb7434d9efc6b80eebe68f61d342751f930684d7cfcdab667ff604f84f11
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wix?keyword=twiccionario+conocer+answers PDF link annotation
    • https://cdn.sqhk.co/xinulezebi/hHDqJif/kesuzoju.pdfIn PDF document text
    • http://ru-order-687646765445.art/kabopetiwefonosoguferij6x1m9.pdfIn PDF document text
    • http://whysmall.space/disaster_area_inspection_report_form1ni7n.pdfIn PDF document text
    • https://nupepapuk.weebly.com/uploads/1/3/1/4/131484133/788298.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefima/gjKjhfn/make_your_own_music_mix_online_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425910/normal_5ff906b9815d6.pdfIn PDF document text
    • https://rosunitekuw.weebly.com/uploads/1/3/1/3/131384708/jerujoke-gegubev.pdfIn PDF document text
    • https://cdn.sqhk.co/xufaribo/hhgESlK/zevetudiwemagevuvajotivag.pdfIn PDF document text
    • https://cdn.sqhk.co/rivogigaweb/QgmQRjd/kasavivexapiforebulorel.pdfIn PDF document text
    • http://levupag.22web.org/jubuketomuxejekawu.pdfIn PDF document text
    • https://duguzimelape.weebly.com/uploads/1/3/4/6/134666192/bevatitaxeragov_mixafitowot_guzewevoku.pdfIn PDF document text
    • https://nefikeroliv.weebly.com/uploads/1/3/1/4/131453179/52d62f4f6.pdfIn PDF document text
    • http://livethailand.fun/ukulele_dimensionssiqyi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495985/normal_601e16b5a65d5.pdfIn PDF document text
    • http://rameautbxy.space/22306499856380qz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499629/normal_600f1c8930ad0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tomamujuf/porobogisoxetubuvin.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/how_to_turn_on_camera_on_hp_probook.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/74982683512.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c187.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC187 4512 bytes
SHA-256: 5acb3d931bb20459dd77bdc3a3e27c6c197f415ce670a53c06f64fed598f7cd5
font_01_sfnt_off0000d0d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0D4 10124 bytes
SHA-256: 6ef131ec683078a6e94307d9010824f85a66b91174411fc24ca217ad9c67ffdb
font_02_sfnt_off0000f311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF311 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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