Malicious PDF — malware analysis report

Static analysis result for SHA-256 3698c8c1cc92fc02…

MALICIOUS

PDF

75.6 KB Created: 2021-03-05 17:24:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 8c5772faab99f2eac3a984fd6fed9ba5 SHA-1: 7185236529091d9608f244665f5a149a01965975 SHA-256: 3698c8c1cc92fc02635cfb89f2b719e1745c9a24f41fb83e8d1294acd15401b9
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or trojan delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to trick users into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/aws?utm_term=fight+song+easy+piano+sheet+music+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465024/normal_5fd7cabd9eafc.pdfIn PDF document text
    • https://cdn.sqhk.co/dejuxafe/jbJijgg/use_rankle_in_a_simple_sentence.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498324/normal_6004a5a85fb38.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvazuginu/5Iqhiie/parks_and_recreation_special_watch_australia.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/ilhbUgd/download_super_city_superhero_sim_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/sidamebo/0hf6Mja/colour_cube_puzzle_game.pdfIn PDF document text
    • https://cdn.sqhk.co/fiseguvugele/ejaT8gh/59530479287.pdfIn PDF document text
    • https://cdn.sqhk.co/gitovera/iijbje0/55391391076.pdfIn PDF document text
    • http://povar2020.site/amma_kavithai_hd_photos7uere.pdfIn PDF document text
    • https://cdn.sqhk.co/sisadenev/jKjin6k/vudekomofizusogukaveju.pdfIn PDF document text
    • https://cdn.sqhk.co/duponetix/jbijbCH/22272286753.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450043/normal_6015a0ba4c973.pdfIn PDF document text
    • https://cdn.sqhk.co/pibavasedegi/b50yiKz/drag_sim_2018_mod_apk_1._1._0.pdfIn PDF document text
    • http://emirofficialzm.com/girigusovafup05zb.pdfIn PDF document text
    • https://cdn.sqhk.co/lunosupi/jSjj4ha/wings_etc._laporte_east_lincolnway_laporte_in.pdfIn PDF document text
    • https://cdn.sqhk.co/bofagenined/hbqhchi/infection_control_procedures_in_dental_office.pdfIn PDF document text
    • https://cdn.sqhk.co/fekesolip/Njahfjj/emergency_ambulance_sound_download.pdfIn PDF document text
    • https://cdn.sqhk.co/wezopexa/AjgibE8/download_mod_among_us_di_minecraft.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384149/normal_60379f0f6f099.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421208/normal_5ff7ac9a7acfe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e9d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D1 5456 bytes
SHA-256: f1c046ddb5fdfcb7530a224bffcaeb4a9c79aed4965044e2333f016f451fc0f3
font_01_sfnt_off0000fc4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC4E 10724 bytes
SHA-256: 431a5ec10f76086ea42e1ab3706e4bc44215c9f6bc5d477298285026ac7d80b7

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