Malicious PDF — malware analysis report

Static analysis result for SHA-256 2993f3e409f4b535…

MALICIOUS

PDF

75.8 KB Created: 2021-03-27 10:43:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 6545f4d9dfc01357095628bb26722d4d SHA-1: b0de63c902a3f887dc29ff11f1c7d3f97ed212b7 SHA-256: 2993f3e409f4b53547af707bb2b7b06751710f00ef82f287049f8b389a0ccff9
126 Risk Score

Malware Insights

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

The PDF file contains multiple heuristics indicating malicious intent, including external URI redirection and ML classification. The embedded URL `https://fokemale.ru/wix?keyword=setc+2020+schedule` suggests a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it's designed to redirect users to malicious content, aligning with spearphishing tactics.

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 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.
  • 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://fokemale.ru/wix?keyword=setc+2020+schedule PDF link annotation
    • http://fujiforu.22web.org/sears_kenmore_refrigerator_parts_near_me.pdfIn PDF document text
    • http://lowadikewafuber.iblogger.org/ririwidexite.pdfIn PDF document text
    • http://jokojujut.medianewsonline.com/6941854185.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/lopadivupudexa/zibobikirefaba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ff56f59-5669-4812-a9f4-5fd4b46821b7/ps4_gold_headset_on_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57cb1ad0-15f1-43d2-bd95-f994fa716084/what_is_descriptive_analytics_prescriptive_and_predictive_analytics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8cafeb1-7909-4baa-bbbe-ddf3886346d1/61287939131.pdfIn PDF document text
    • http://lavemob.epizy.com/indefinite_integral_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2357e607-9104-45c7-a247-d72a4f55809a/1828658729.pdfIn PDF document text
    • http://tevimumuto.epizy.com/bhagavad_gita_barbara_stoler_miller.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3404fb0-44f3-447d-9ca7-33fd11fd6fc3/summary_of_the_seven_habits_of_highly_effective_teenager.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08c9f7fc-36d1-4015-a41b-89c9eee0a21a/jolen_creme_bleach_instructions_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a930fe34-688b-4943-8e89-2af8c086f239/how_long_should_a_pellet_stove_last.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a3a977a-48b8-4e2c-9b23-facba832e3d7/61843774986.pdfIn PDF document text
    • http://mufomasugom.epizy.com/appointing_a_guardian_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5aad428-e80f-4e20-b693-1e014d722758/best_fishing_knots_for_swivels.pdfIn PDF document text
    • http://mezipep.rf.gd/swann_8_camera_security_system_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93f31ce1-925b-47d0-a958-ee864a9ce193/cordless_phone_dect_6.0.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/core_econ_book_answers.pdfIn PDF document text
    • http://gozudil.onlinewebshop.net/disusozikupoxinalamapap.pdfIn PDF document text
    • http://kuwoguki.epizy.com/broken_angel_hd_video_1080p.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/ibps_guide_quiz.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_off0000ec00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC00 5096 bytes
SHA-256: f357588e1db3c0bfec60c7b9368dd86cd729ebcd1933e6950de27b17c54f16db
font_01_sfnt_off0000fd5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5B 11304 bytes
SHA-256: 116abf72769b60967e1ee6a691293d01391921a27f08a8df5497be09609a8eab