Malicious PDF — malware analysis report

Static analysis result for SHA-256 bed62dac9bd8f340…

MALICIOUS

PDF

78.1 KB Created: 2021-03-24 00:09:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 438fb576fa37d6df697d30a3cd35196e SHA-1: 6f108825761d7a4ba90bd33be0b158aefe05d1a8 SHA-256: bed62dac9bd8f340c083a9762392959ebe05a5797c13600dd1428a399eb392c0
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous links to external websites, many of which are hosted on disposable domains and appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to online gaming or technical queries, directing users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://seumenha.ru/wix?keyword=how+to+mute+yourself+on+discord+while+in+game PDF link annotation
    • http://shopbest.online/boyds_stocks_rem_700_adluznry.pdfIn PDF document text
    • http://tevutubiwij.getenjoyment.net/salario_de_delegado_da_policia_federal.pdfIn PDF document text
    • http://nagalomozenuxo.iblogger.org/caste_certificate_form_odisha.pdfIn PDF document text
    • http://instapriz24.site/rodujunafojeridabuzatukiynf.pdfIn PDF document text
    • http://goodsun.space/weight_tracker_pregnancy_week_by_week_kgd8nrz.pdfIn PDF document text
    • http://kosodidaxelo.22web.org/login_page_template_for_android_app.pdfIn PDF document text
    • http://innov-cis.net/62747484678q0rqn.pdfIn PDF document text
    • http://wovuwukotuvoxi.mygamesonline.org/xixabivijolosabodazofa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nuridoxiwe.rf.gd/88653441590.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e95bacbc-39dd-4eff-8ef9-da8bc85cbb6f/warrior_cats_manga_skyclan_and_the_stranger.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb9bed64-744f-47a9-ae7a-d69733ecd6e3/stihl_bg56c_leaf_blower_for_sale.pdfIn PDF document text
    • http://fuvovidesom.epizy.com/calvary_reformed_church_orland_park.pdfIn PDF document text
    • http://tadidemoribezor.epizy.com/vark_learning_styles.pdfIn PDF document text
    • http://kisezemewarajox.rf.gd/kemenopuvu.pdfIn PDF document text
    • http://xanawuvogi.epizy.com/39614192201.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c894ced5-bcf6-4eef-b191-653694e8c661/39677078635.pdfIn PDF document text
    • http://zerolilezobiwe.rf.gd/socialisme_dfinition.pdfIn PDF document text
    • http://wuselenefoz.rf.gd/48888462182.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3970e223-0498-4727-9a0c-dfdbb8b8531c/wenifujopi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f15cae8-e69a-463a-899f-aef0155da876/15044802871.pdfIn PDF document text
    • http://zokaramizixa.atwebpages.com/android_mobile_codes.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_off0000f073.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF073 5592 bytes
SHA-256: d24f38fc1420db350c5de061d79089cf811961de3d2f0f4dfa4e0e24498411bd
font_01_sfnt_off0001035f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1035F 11724 bytes
SHA-256: 72e1805fcedebd5a80ad79d45678a620adf93994bb8960c2f1d8643f9020ed4c

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