Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f082f4a59d6fe8d…

MALICIOUS

PDF

98.5 KB Created: 2021-03-12 02:28:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 8ff8855a06c0ab7b67b6df9eb4d3f097 SHA-1: bacae3ea56b9cfc978f2db4006f2355c4e44479b SHA-256: 8f082f4a59d6fe8d80b19b81554cdbe7c7d935b75a54d01e89be6b113c98b474
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URIs, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of 'utm_term' parameters in some URLs indicates a phishing or spam campaign attempting to disguise its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://jottigo.ru/123?utm_term=standard+chartered+malaysia+annual+report+2018 PDF link annotation
    • http://luminar3-download.xyz/bangla_font_free_for_windows_7dpvs8.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/jYaEjfB/88090845187.pdfIn PDF document text
    • http://mobufuwiwid.medianewsonline.com/dekojomatagagugik.pdfIn PDF document text
    • http://kulofokugizadeb.22web.org/salute_to_americas_finest.pdfIn PDF document text
    • http://tehnotop.space/16288268737zol5m.pdfIn PDF document text
    • http://shop-profildoors.ru/monster_2003_watch_onlinewewnm.pdfIn PDF document text
    • https://cdn.sqhk.co/pofaxexaxi/4OqohfQ/venapa.pdfIn PDF document text
    • http://itverys.space/kittel_thermal_physics_solutions_chapter_46mnm7.pdfIn PDF document text
    • http://laribij.scienceontheweb.net/what_is_the_present_tense_of_the_verb_listen.pdfIn PDF document text
    • http://legendnat.space/10477048014dgdro.pdfIn PDF document text
    • http://ligugiban.scienceontheweb.net/encyclopedia_of_computer_science_microsoft_office.pdfIn PDF document text
    • https://cdn.sqhk.co/tekunipifob/6J1gelx/59661609256.pdfIn PDF document text
    • http://wegisinebirixe.iblogger.org/77885590141.pdfIn PDF document text
    • https://cdn.sqhk.co/zowipitilo/ich8Cia/49168134757.pdfIn PDF document text
    • http://ladujose.sportsontheweb.net/distributed_systems_books_quora.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/woxotopapozokev/28421222060.pdfIn PDF document text
    • http://fufudaloxola.onlinewebshop.net/design_of_reinforced_concrete_10th_edition_textbook_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/gerotixigesow.pdfIn PDF document text
    • http://dogumimuzelu.epizy.com/managerial_accounting_exercises_and_answers.pdfIn PDF document text
    • http://duvodix.myartsonline.com/jenn-air_downdraft_gas_range_installation_instructions.pdfIn PDF document text
    • http://fapujeg.epizy.com/how_much_does_an_aircraft_pre_buy_inspection_cost.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_off000140ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140AC 6040 bytes
SHA-256: 008bfa442829dfaa4185c64351bae8ea853396851b260edd7f2d9a71ba132f7b
font_01_sfnt_off00015517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15517 11612 bytes
SHA-256: 0476c0d7b7b6f1962a0e035f5ff1d109bde2bc613b6ba5086bcb6cb406a18f75

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