Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a9074e7da0a9094…

MALICIOUS

PDF

84.0 KB Created: 2021-05-01 19:14:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 84d515adfca55b1b996ccd1548f42485 SHA-1: 18d926d3777981f8fd6456c225dbeda8480398ae SHA-256: 2a9074e7da0a909447d5943fbde7199a4b2297d1f568ed962c7c7bd90d85f115
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crophysi.ru/strik?utm_term=alpine+ktp-445a+user+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4444850/normal_6046b97da10a5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383138/normal_5fe3e869251a8.pdfIn PDF document text
    • http://mibotirekusiw.mywebcommunity.org/probability_generating_function.pdfIn PDF document text
    • http://jidinovivapo.22web.org/41160464931.pdfIn PDF document text
    • http://vujenixuwo.mypressonline.com/dunezinelu.pdfIn PDF document text
    • http://gazizelasama.getenjoyment.net/abrsm_grade_3_violin_scales_and_arpeggios.pdfIn PDF document text
    • http://xokebidukefu.getenjoyment.net/711127564.pdfIn PDF document text
    • http://virujurarajilef.getenjoyment.net/dexezigesadokutowon.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/nijudow/arduino_print_string_format.pdfIn PDF document text
    • http://wiwosotu.myartsonline.com/xibalimirumatuzaka.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/64638683450.pdfIn PDF document text
    • https://s3.amazonaws.com/getizar/what_colour_is_your_parachute_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78051d52-76de-4e72-970d-2ea0272f6efc/63342994060.pdfIn PDF document text
    • http://fedubumisuvek.epizy.com/futugarerexefinupewus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94f750a5-500e-4778-8a47-f0c0d78b54ca/feguzirokizutabadeda.pdfIn PDF document text
    • https://s3.amazonaws.com/kobivimelelo/divase.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b24ea29f-db15-47da-b794-64db43e5b2e0/the_crown_season_4_episode_7_locations.pdfIn PDF document text
    • http://dupowoza.epizy.com/53276394568.pdfIn PDF document text
    • http://pisunegabig.rf.gd/40277171042.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_off000106a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106A3 5264 bytes
SHA-256: 495932a5d05cd94b661aa5ff15523eca74ed0637d9e50675369920b529f633d6
font_01_sfnt_off00011887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11887 12360 bytes
SHA-256: ad011147b8f87fd93f0797896e28de854ff22c01a072117570c8638654dcc334

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