Malicious PDF — malware analysis report

Static analysis result for SHA-256 2703f2d832753086…

MALICIOUS

PDF

66.9 KB Created: 2021-03-18 05:33:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 98e43444f0b4b21850a3e9dc7e020724 SHA-1: c0f363d632adcf623ba4a33207e9541fd621dcaa SHA-256: 2703f2d8327530866ba512e2f50cffae1c33938129b337859773f07ad857be98
156 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many of which are likely part of a link farm designed to obscure the true destination or distribute malware. One of the primary URLs, 'https://seumenha.ru/wix?keyword=papa%2527s+burgeria+joguix', appears to be a lure, potentially leading to a phishing page or a malware download.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/wix?keyword=papa%2527s+burgeria+joguix PDF link annotation
    • http://xolokeminapi.getenjoyment.net/javixegokusijenivisezo.pdfIn PDF document text
    • http://storeplus.pro/lazarillo_de_tormes_english_translationbijpa.pdfIn PDF document text
    • http://agencymedia-ig.com/among_us_wallpaper_makerath00.pdfIn PDF document text
    • http://fanisore.sportsontheweb.net/alastair_reynolds_revelation_space.pdfIn PDF document text
    • http://jijuduli.mywebcommunity.org/voguritosizogetoxalivogid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gixopiv.onlinewebshop.net/azotemia_en_perros.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/blender_2._79_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/how_to_get_married_in_india_for_foreigners.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/the_world_is_too_much_with_us_poetic_devices.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23b2c7f8-af7e-401b-836c-0a058d0e9455/abu_garcia_ambassadeur_5000_diagram.pdfIn PDF document text
    • http://siwemoxoxawevuv.atwebpages.com/radioactive_waste_management_in_hospital.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/572a17f9-572e-4c16-97de-11e05d97c3a5/26646528205.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/xumamikogodutirikap.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/zuxuvar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89c537d9-d936-40ac-ae59-cddd989ab24b/tokyo_ghoul_season_3_release_date_netflix.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/curious_world_maps.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/barcode_image_generator_software_free.pdfIn PDF document text
    • https://276658a2-c6b1-4a23-bc3b-56c82bce4278.filesusr.com/ugd/f9448a_1ad5cc74867c4a43b4f84a51b00b7abb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vunizi/aws_cloudformation_template_format_error_unsupported_structure.pdfIn PDF document text
    • https://4ad55601-b8ab-4ae0-bc0e-e90069072326.filesusr.com/ugd/3aca14_186366af64e041239c1d1f904017e7f3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/buvinidamaperikazanojuda.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_off0000c7a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7A8 5272 bytes
SHA-256: 4623d6307fb551b07aca0503c804efa22dcbce86376312af8cee74b65eb87125
font_01_sfnt_off0000d9b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B1 10912 bytes
SHA-256: 33b13501e0b2a9aeb4c4cf24f1a19854282711a6089991bd39b143a04600fdc7