Malicious PDF — malware analysis report

Static analysis result for SHA-256 45a38101d3cf6907…

MALICIOUS

PDF

82.2 KB Created: 2021-03-20 10:16:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: aafa75d4fc38ee99d1d6fd5dc65601cf SHA-1: 96c0c4200641925392774187a72fef2ecbeafb90 SHA-256: 45a38101d3cf6907662cc027ecd675e39393fcd60f7432ae0cdea52b23891590
146 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. It uses a QR-code lure. 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 0.9992

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 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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/strik?utm_term=international+business+machines+stock+symbol PDF link annotation
    • https://cdn.sqhk.co/jibetovo/0ihjdBb/wobevetimumiwedamuvibev.pdfIn PDF document text
    • http://beautysss.site/relawevivoxitazanenereligtuycx.pdfIn PDF document text
    • http://ecosbor.net/4400881162c9nfq.pdfIn PDF document text
    • http://genoray.pro/bls_for_healthcare_providers_student_manual_2015_free_downloadbf41u.pdfIn PDF document text
    • https://cdn.sqhk.co/zunowexafa/nitibgf/tuxewepajebosalepijagi.pdfIn PDF document text
    • https://cdn.sqhk.co/fudamewojaf/iichalU/u_mobile_prepaid_validity.pdfIn PDF document text
    • http://hookup153.space/bosudawozadijzooxl.pdfIn PDF document text
    • http://complect-tech.ru/brobar_boli_video_mr_jattde2ve.pdfIn PDF document text
    • http://hellochildren.online/garmin_gps_78sc_mountc4w53.pdfIn PDF document text
    • http://salonly.xyz/portfolio_website_templates_wordpress_free7kayj.pdfIn PDF document text
    • http://sopugepibimel.mypressonline.com/blood_relation_reasoning_questions_with_answers_free_download.pdfIn PDF document text
    • http://allfreebets.ru/save_r_script_asyz77u.pdfIn PDF document text
    • http://idealica-uficialeitalia.website/hanging_bell_bird_feederc5nbh.pdfIn PDF document text
    • https://cdn.sqhk.co/sotisajen/gdggghS/snappers_bar_and_grill_mechanicsburg_pa.pdfIn PDF document text
    • http://alphabitx.com/nys_driver_license_mailing_statuszhytb.pdfIn PDF document text
    • http://vanlit.ru/niwukarin3ldx.pdfIn PDF document text
    • http://crystal-light33.ru/write_text_to_file_c_filestream8xdi9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/13th_finance_commission_report.pdfIn PDF document text
    • http://rijonitapadon.myartsonline.com/how_often_should_a_first_aider_receive_training.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/can_you_program_a_directv_remote_to_a_roku_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/gikididegunon.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/norosijebuvokenux.pdfIn PDF document text
    • http://rodexiguv.onlinewebshop.net/ribopamovabuwenejisik.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_off000100fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100FD 5284 bytes
SHA-256: 9b9a3a8d4906b1d335d9e0270ac27b8e07c6ea6374d16e89edb05ca2708c3f50
font_01_sfnt_off000112d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112D0 11736 bytes
SHA-256: da904d0a49a4edd33c879859106ab3da888db4602662706b8574ce88726993b5

Open this report in the interactive analyzer, or submit your own file for analysis.