Malicious PDF — malware analysis report

Static analysis result for SHA-256 0319b7dda2026ef2…

MALICIOUS

PDF

75.8 KB Created: 2021-03-24 14:11:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: fb515f52ab7a5980641bca9f8b66ee89 SHA-1: 90ccaf991bed2e18b55382e7f8d2bee72d37c989 SHA-256: 0319b7dda2026ef2dca33b73a0583fdb682a8f325fdba73760545612a7a789b1
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, as malicious and likely phishing-related. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to be a lure related to a common search query, intended to trick users into clicking the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://mezovuduw.ru/strik?utm_term=do+maytag+washers+have+a+reset+button PDF link annotation
    • http://supobesopo.mygamesonline.org/how_to_run_python_script_in_atom_linux.pdfIn PDF document text
    • https://verakolor.weebly.com/uploads/1/3/1/3/131379730/vujobitogaxute-wuridosakaroz-beminebok.pdfIn PDF document text
    • http://uscreditcheck.info/an_inspector_calls_scene_2_summaryqjkdu.pdfIn PDF document text
    • http://rerutexab.iblogger.org/cepal_que_es.pdfIn PDF document text
    • https://vusuvorolom.weebly.com/uploads/1/3/4/5/134501440/2362630.pdfIn PDF document text
    • http://just-gopro.com/wedirufajapavanowemiwie1u3y.pdfIn PDF document text
    • https://cdn.sqhk.co/zirevazul/Wl2gjke/frogger_ps2_iso.pdfIn PDF document text
    • http://forkidsshop.online/turobaviwesales8u2t.pdfIn PDF document text
    • https://cdn.sqhk.co/pojuwudedi/obOhfja/jupuduwezobozugojoliv.pdfIn PDF document text
    • http://gofadivus.mygamesonline.org/icici_bank_education_loan_application_form.pdfIn PDF document text
    • https://kobekasi.weebly.com/uploads/1/3/4/5/134588699/fabasuv.pdfIn PDF document text
    • http://bavimobuxadu.medianewsonline.com/argumento_deductivo.pdfIn PDF document text
    • http://davebamonuzove.medianewsonline.com/rozif.pdfIn PDF document text
    • http://topvideo.design/best_bubble_milk_tea_flavorsb48o3.pdfIn PDF document text
    • http://mopewogubit.getenjoyment.net/thematic_apperception_test_cards_download_free.pdfIn PDF document text
    • http://wozuxel.getenjoyment.net/13460832175.pdfIn PDF document text
    • http://wavapivanuf.scienceontheweb.net/36440943680.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://maxuluxusit.atwebpages.com/34292595599.pdfIn PDF document text
    • http://dolifusekaxug.epizy.com/what_does_a_janome_quilting_foot_look_like.pdfIn PDF document text
    • http://sofibimibojas.myartsonline.com/07_honda_civic_service_manual.pdfIn PDF document text
    • http://fituxulilofe.epizy.com/chicken_with_gimpy_leg_problems.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_off0000eab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAB6 5460 bytes
SHA-256: f7d5a66c03177631e9a06002b55e32d79d88cbd7b488969e6b739acd216e24f9
font_01_sfnt_off0000fd41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD41 10640 bytes
SHA-256: 40166adc89566678459a47bbb581e6c1d93da95163d8c19600f48bbd71ab7e5f

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