Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee3bfe5a6b50491…

MALICIOUS

PDF

83.9 KB Created: 2021-03-24 18:30:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: bc525ea82f75cd7b17275b060bf43f81 SHA-1: b1729dcce17106a3c80290519577d96f67cd1967 SHA-256: 7ee3bfe5a6b5049128d599d355165668b5230097aba25d9c176f269d83cc0e05
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan attempt. It contains an embedded URL that redirects to a suspicious domain, disguised with a search query. The document body, though heavily obfuscated, contains text related to citation, likely a lure to make the user click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://lozipotod.ru/strik?utm_term=how+to+cite+a+person%2527s+quote+in+apa PDF link annotation
    • https://cdn.sqhk.co/zadoweferoxe/XSjZKgc/jukesovijebezefuxuvomu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415052/normal_601dbe822752e.pdfIn PDF document text
    • http://nipokaxa.getenjoyment.net/how_to_install_fios_backup_battery.pdfIn PDF document text
    • http://kimujedat.mygamesonline.org/arrl_handbook_1990_free_download.pdfIn PDF document text
    • http://jowakemanek.iblogger.org/zarutavaxumanakaka.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379859/normal_5fccf802e9c4c.pdfIn PDF document text
    • https://cdn.sqhk.co/virurewev/jjdibgj/46201776244.pdfIn PDF document text
    • https://cdn.sqhk.co/tamejenonisi/je3mTRL/pomitozofivefe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411717/normal_6048e30776aa4.pdfIn PDF document text
    • http://jigunemav.22web.org/excel_pivot_table_report_filter.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427287/normal_5ffd2f327b94e.pdfIn PDF document text
    • https://cdn.sqhk.co/judigirowe/fhfjFhi/36456107737.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwumixe/jfeySmm/used_suvs_near_me_under_3000.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gupojakami/celebrate_it_place_card_template_gartner_studios.pdfIn PDF document text
    • https://s3.amazonaws.com/popilo/ms_excel_basics_exercises_free_download.pdfIn PDF document text
    • http://sejofedavija.epizy.com/integrated_chinese_level_1_part_2_workbook_answer_key_lesson_12.pdfIn PDF document text
    • https://a9750898-a066-404d-a796-54a2f5ad13bb.filesusr.com/ugd/60231a_99990ac6c92049f7acae347c8dfd97b9.pdf?index=trueIn PDF document text
    • http://vemesivudaro.epizy.com/kijasuwepitudikelobuj.pdfIn PDF document text
    • http://bazokupakem.epizy.com/69494829545.pdfIn PDF document text
    • http://lexekuduwowig.atwebpages.com/amsterdam_city_transport_map.pdfIn PDF document text
    • https://667b589a-70dd-4c78-a03f-47f6e9f07b1f.filesusr.com/ugd/db80c5_27a6c9dc5fb94be7b48970076cf08c7c.pdf?index=trueIn PDF document text
    • http://tixofimisupabev.onlinewebshop.net/acls_2020_free_download.pdfIn PDF document text
    • http://wetukanezin.atwebpages.com/roratisalavixo.pdfIn PDF document text
    • https://cf21b241-1edd-4e7a-8b85-4b7fa12bec5a.filesusr.com/ugd/835652_46047720cf744f7b99a96a3d9616c2cf.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fcd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD2 4988 bytes
SHA-256: bec463c7603071b9707f95e0ccb7d421e16a453983c22b43a39432540e5fa668
font_01_sfnt_off00010de5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DE5 11012 bytes
SHA-256: 8071b94e42bb7fc77baf2f1ee72fefcf3e1179e87bb157db8b8b5b44eabebe34
font_02_sfnt_off00013350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13350 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230