Malicious PDF — malware analysis report

Static analysis result for SHA-256 09eb436f7b4962a5…

MALICIOUS

PDF

89.1 KB Created: 2021-05-06 02:55:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f7e29cf191a9296f25c003bbab740fd6 SHA-1: 92d8f7d26a967a3a68cba151c924ebb200f2f944 SHA-256: 09eb436f7b4962a56c903511fb72201b556410221c4a3c79472d9fa94b69b7af
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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.
  • 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://dugedepap.ru/strik?utm_term=comnavcruitcominst+1130.8+jp PDF link annotation
    • http://beremoter.online/recommendation_letter_for_masters_scholarshipm28qi.pdfIn PDF document text
    • http://podenepusow.22web.org/28481010218.pdfIn PDF document text
    • http://zawugudumi.getenjoyment.net/silozojixoxebesiwikira.pdfIn PDF document text
    • http://olymp-trade.top/dudivewatirufojklyqy.pdfIn PDF document text
    • http://raicen.com/triple_column_cash_bookd6vrx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kenesowozowojaw.myartsonline.com/bmw_x5_e70_wiring_diagram.pdfIn PDF document text
    • http://jipudovisubu.rf.gd/fender_amp_transformer_date_codes.pdfIn PDF document text
    • https://b84c3727-5d5a-4c5d-9d5d-21cac87b3a69.filesusr.com/ugd/fdd6c2_94e5aae004484b7588834c786631ccd7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/el_periodo_de_resolucin_en_la_historia_natural_de_la_enfermedad_es.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/68419245734.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/calibre_svrf_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/sony_rx100_vi_release_date.pdfIn PDF document text
    • http://nafabumawo.rf.gd/fogidoparimomukugejo.pdfIn PDF document text
    • https://s3.amazonaws.com/xulikamul/sample_letter_of_intent_for_scholarship_application.pdfIn PDF document text
    • http://jevabatogi.rf.gd/vidmate_new_2019_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/xoxasudazuxavugirer.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/form_action_submit_button_mvc.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/mathematics_solver_software_free.pdfIn PDF document text
    • http://vidilig.onlinewebshop.net/23705124281.pdfIn PDF document text
    • http://gunexukod.epizy.com/how_car_brakes_work_youtube.pdfIn PDF document text
    • http://taroveruwidiba.onlinewebshop.net/bstc_answer_key_2020_download_free_download.pdfIn PDF document text
    • https://1f49b3f1-4b09-4f89-88df-03804352fc9a.filesusr.com/ugd/a51aec_c6cd5e684d374fad8236cd898aef170c.pdf?index=trueIn PDF document text
    • http://saxodanokijaj.atwebpages.com/how_to_do_crochet_box_braids_on_short_hair.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/conditionals_exercises_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/what_is_the_meaning_of_scout_oath_and_law.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011f76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F76 5672 bytes
SHA-256: 095fbea386eeae56f9193fa107903113d988e65e455873639b47f89a1f28a4b3
font_01_sfnt_off000132b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132B9 10664 bytes
SHA-256: 0e7fd4bbfdf70972670bfcf80ca72928dba79ef20c3d4446d1d4311ab0e49ec1

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