Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaad023c63d917d5…

MALICIOUS

PDF

76.4 KB Created: 2021-02-25 22:37:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8321b5f27015de34c58fcb7e02060367 SHA-1: bebcbc71a65a21c328f2ecbaced7628fa87ca8e3 SHA-256: aaad023c63d917d50b1220bb89633eb50174767def60da5697fd5778e065322c
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=mgsv+trophy+guide+ps3 In PDF document text
    • http://my-favshoph.online/object_pronouns_worksheetevs32.pdfIn PDF document text
    • http://dress-russia.ru/57278655348paba3.pdfIn PDF document text
    • http://lebadatow.22web.org/88474865093.pdfIn PDF document text
    • http://kzrovk.xyz/omron_hem_7130_error_codesdk7m7.pdfIn PDF document text
    • http://egrn-order.online/cbs_injury_report_nbaj04sl.pdfIn PDF document text
    • http://legrand-spb.ru/what_is_the_nursing_stress_scaledvw18.pdfIn PDF document text
    • https://babipuwoze.weebly.com/uploads/1/3/4/8/134865032/gokadaginasava.pdfIn PDF document text
    • https://fagutefoxod.weebly.com/uploads/1/3/4/2/134235025/4437474.pdfIn PDF document text
    • http://ketousa.site/71605291277ntxx7.pdfIn PDF document text
    • https://duditoza.weebly.com/uploads/1/3/2/3/132302736/2433131.pdfIn PDF document text
    • http://reform-st.ru/86002363344vbmp5.pdfIn PDF document text
    • http://salonapp.xyz/resistance_band_exercises_for_weight_lossuazck.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feramivo.rf.gd/nys_mandated_reporter_form.pdfIn PDF document text
    • http://kunovudulex.rf.gd/lewmar_mainsheet_traveler_kit.pdfIn PDF document text
    • http://povorafolopoxap.epizy.com/kowirozukiwav.pdfIn PDF document text
    • https://s3.amazonaws.com/bajuse/podiluj.pdfIn PDF document text
    • http://buvizukiwixo.rf.gd/unemployment_insurance_phone_reporting.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/aahat_video_3gp.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_off0000ee96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE96 5308 bytes
SHA-256: 957b665d955c4d581bb4488ab025f6f052d56ddc18db389a8d55cf32d3d4ddbe
font_01_sfnt_off000100c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100C8 10504 bytes
SHA-256: 4ae430b3acc85840cd0e652691be2994148d4df3fcf5eb255b54a14157e34f72