Malicious PDF — malware analysis report

Static analysis result for SHA-256 994ccc11af647e3a…

MALICIOUS

PDF

85.5 KB Created: 2021-03-10 07:07:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e0f26edb67055aaee068feb0a6476c16 SHA-1: 3f26fc7de49413cf31f455fad4cfedd17b0608f9 SHA-256: 994ccc11af647e3ab782ca99df429330453cf98d2a53ea7d698feca4d1c4b8f9
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a fake browser/software-install lure. 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 0.9997

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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://nipisod.ru/wix?keyword=module+9+probability+answer+key PDF link annotation
    • http://kayikciakademi.com/pet_sematary_full_movie_123moviesz8m3p.pdfIn PDF document text
    • http://help-verification.com/67156404355u5cx8.pdfIn PDF document text
    • http://toxipoxekej.medianewsonline.com/55142055765.pdfIn PDF document text
    • http://repaircreditscore.info/631822458558kvij.pdfIn PDF document text
    • http://flowerport.store/5392730703kza1.pdfIn PDF document text
    • http://pigigozoruda.mypressonline.com/pdf_converter_to_word_editable_free_download.pdfIn PDF document text
    • http://strgb2.ru/blood_of_elves_audiobook_downloadqy7cx.pdfIn PDF document text
    • http://nopotaz.medianewsonline.com/mcculloch_chainsaw_pro_mac_10-10_parts.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/vibuvomomuv/the_expanse_season_5_episode_7_cast.pdfIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/granny_mod_menu_apk_1._7.pdfIn PDF document text
    • https://538d8494-0c7d-401a-b890-0485f6bc7bca.filesusr.com/ugd/29c71c_a34917dff2054b7bbb09da405b3ec911.pdf?index=trueIn PDF document text
    • http://vesunebujel.rf.gd/59981859670.pdfIn PDF document text
    • https://6d4cd3b7-91e9-43ac-92b9-205473f1e50d.filesusr.com/ugd/28146e_b4acca08590648c29bda37d1f6165602.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mukut/nz_tenancy_bond_refund_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01cd78a0-e255-4535-ab76-eecf0d6ef491/mazda_cx_7_luxury_2007_reviews.pdfIn PDF document text
    • https://6440a9f6-5e82-4153-977b-4ffe9374ec4a.filesusr.com/ugd/7182f3_d0f65f994dad4b5491dd9af0436ee59b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/ccna_1_chapter_1_quiz_answers.pdfIn PDF document text
    • https://200c4c3d-185b-4246-b99f-f40cd7065c99.filesusr.com/ugd/3ed902_3f4e7d3d36da457bbdbdc81988852d55.pdf?index=trueIn PDF document text
    • http://gemovimuwopete.atwebpages.com/posefu.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/platform_shoes_fall_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/227abc7a-5f60-4d40-b1c6-b243f1135bfa/which_is_the_best_mcq_book_for_neet.pdfIn PDF document text
    • http://xovojiga.epizy.com/dyson_v6_absolute_cordless_vacuum_cleaning_filter.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_off000110ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110AC 5512 bytes
SHA-256: de7d4070358e8cdcfbc0e4fb50941dac0fe16c8cbd48fb9db0d6e8dd98c693a6
font_01_sfnt_off0001238f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1238F 10988 bytes
SHA-256: 35396dd89ee4cc5d5422c6c61806f92645e7117847b33d9982203482920f1b28

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