Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d73267372683c48…

MALICIOUS

PDF

79.6 KB Created: 2021-03-19 23:11:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3b7fe3e4804c3338ca3e35b06ba86e8a SHA-1: 9e69ee4a792b395f31cccf64707db550904b5e33 SHA-256: 0d73267372683c48bb9d6cb526ff9e116cf880262cf891167aaab3b89cb08456
134 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 an urgency-based 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 0.9990

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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://kuzutuzo.ru/award?keyword=bhagavad+gita+as+it+is+pdf+in+odia PDF link annotation
    • https://tavadubamik.weebly.com/uploads/1/3/4/4/134473349/sufusotakaduna.pdfIn PDF document text
    • https://cdn.sqhk.co/lexewagoz/jibjbiY/2005_weekend_warrior_toy_hauler_specs.pdfIn PDF document text
    • http://mebevevi.mywebcommunity.org/dizulepozotadam.pdfIn PDF document text
    • http://idealslim-italiaofficial.site/sukokajokadawatomojugiydwvk.pdfIn PDF document text
    • https://banezinalirunod.weebly.com/uploads/1/3/1/4/131437453/2b0989f.pdfIn PDF document text
    • https://melazikadoxu.weebly.com/uploads/1/3/4/5/134594637/pobiju.pdfIn PDF document text
    • https://nefikeroliv.weebly.com/uploads/1/3/1/4/131453179/66f5448b.pdfIn PDF document text
    • https://cdn.sqhk.co/jujejorule/dgc7I01/bollywood_dance_party_songs_2020.pdfIn PDF document text
    • https://tujalulu.weebly.com/uploads/1/3/4/3/134382228/ac9e81c6af8f1.pdfIn PDF document text
    • https://cdn.sqhk.co/fiseguvugele/gghgihr/sarkar_infinite_mod_apk_data.pdfIn PDF document text
    • http://pedagodogiko.getenjoyment.net/03_saturn_vue_transmission_fluid_check.pdfIn PDF document text
    • http://shop50off.info/cuantos_dias_de_vacaciones_tiene_un_trabajadorhbph2.pdfIn PDF document text
    • http://zesenadozefut.sportsontheweb.net/ruwofusalirowazaxavol.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/rebesudanolo/35757825971.pdfIn PDF document text
    • http://ralivapoked.epizy.com/cancer_stages_and_grades.pdfIn PDF document text
    • http://wokarodefi.onlinewebshop.net/95103845270.pdfIn PDF document text
    • http://womidelere.myartsonline.com/76327697812.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/39035237937.pdfIn PDF document text
    • http://nufebuzu.epizy.com/tinupojizibawelenarag.pdfIn PDF document text
    • http://volitiwil.epizy.com/will_tokyo_ghoul_ever_come_back.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/possessive_form_with_words_ending_in_s.pdfIn PDF document text
    • http://monuwuwotivonil.epizy.com/crystal_reports_tutorial_visual_studio.pdfIn PDF document text
    • http://xofivijisaja.rf.gd/hobbies_worksheets_reading_comprehension.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/bootstrap_4_form_validation_tooltip.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/current_affair_reporter_charged_with_child.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e13b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE13B 5284 bytes
SHA-256: de76de4c53c9a3ac568e60bf684e67db263ebad1d7357733884cc67fb247b513
font_01_sfnt_off0000f34b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF34B 11192 bytes
SHA-256: 3074b8884a0d25f2f41d02ebd43d7aff218290538ecd612e8f8e6e1f08226a92
font_02_sfnt_off000119c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119C9 16172 bytes
SHA-256: 6e699eab9a6fef16b3ea923df7b93ce1c5cbd97c7a594d359cd98c90be4a35f1