Malicious PDF — malware analysis report

Static analysis result for SHA-256 33f37a8efc492894…

MALICIOUS

PDF

78.3 KB Created: 2021-03-16 18:54:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 5c6ceb2e9ad0710716fc247fe3fcdc09 SHA-1: ba7b1e4663b3f25262dfeaffe2290f6c528f5581 SHA-256: 33f37a8efc49289426118507792e13398e6f09d98c590a7b1ae573fc6c72e08f
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'https://mezovuduw.ru/wix?keyword=zombie+tsunami+apk+mob', which is likely intended to lead the user to a phishing or malware download site. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of the malicious URL and the high risk score indicate a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wix?keyword=zombie+tsunami+apk+mob PDF link annotation
    • http://winoorama.site/punelapip31gex.pdfIn PDF document text
    • http://vasakuso.sportsontheweb.net/savamixiruripevu.pdfIn PDF document text
    • https://dawemewi.weebly.com/uploads/1/3/4/7/134747996/1091207.pdfIn PDF document text
    • https://sidilatadafexu.weebly.com/uploads/1/3/1/1/131164021/5148820.pdfIn PDF document text
    • https://bezuwodasufex.weebly.com/uploads/1/3/2/6/132696249/gexizediz.pdfIn PDF document text
    • http://povisowalikim.scienceontheweb.net/bovogituvol.pdfIn PDF document text
    • https://babulavired.weebly.com/uploads/1/3/0/7/130775389/subodasu-meseb.pdfIn PDF document text
    • http://emirofficialzm.com/how_to_clean_safety_first_ear_thermometerymxrh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/01db1b96-6b7a-4933-a191-6594d33fa3ec/74193061966.pdfIn PDF document text
    • http://vupaguriwedizid.atwebpages.com/sexagowaxukejavugisozem.pdfIn PDF document text
    • http://bidejepeko.onlinewebshop.net/42758190977.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/lansweeper_report_specific_software_installed.pdfIn PDF document text
    • http://fupisetugib.rf.gd/abena_abri-_form_comfort_briefs_medium_m4.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/good_morning_gif_flowers_images.pdfIn PDF document text
    • http://zapulozamatuwe.epizy.com/musafir_atif_aslam_song_mp4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2052ff72-52d1-409b-8e81-07379e7a40f5/what_factors_affect_diversity_in_an_ecosystem.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/vowel_blends_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/natural_selection_simulation_lab_answers.pdfIn PDF document text
    • http://bitujiduruv.myartsonline.com/how_to_learn_medical_billing_and_coding_for_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6aa1b2f-6278-4a52-a486-314c1663ad27/audio_technica_lp120xusb-bk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9ccc2cf-6cbe-4c14-a27d-104dc2022140/gafunusadudedej.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/89000066833.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ef075c2-9d73-4c35-97c1-856ef4c857f5/what_are_the_5_basic_principles_of_the_constitution.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_off0000f31c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF31C 5000 bytes
SHA-256: aa3ce2e3fb94a98e9b163c3afae863d1ebdb6066e2ab411c32170daafaca4ff1
font_01_sfnt_off0001040d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1040D 12148 bytes
SHA-256: 285500a8a82d54edc7daadb8ca69d1cfc6baba4d1aeb862587b801d1f9788375

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