Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcfc90e4f8f857bb…

MALICIOUS

PDF

82.1 KB Created: 2021-03-31 11:49:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 0a6366296c334aa3929455a00755b354 SHA-1: 935fb2153a5d1475863c4dcd56399fee17abce2b SHA-256: bcfc90e4f8f857bb0d7a9055db33663d58a9e94f1c9656762f21b1f08331aadd
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. Although no scripts were explicitly extracted, the presence of an external URI suggests the document's purpose is to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ponafet.ru/award?keyword=abiotic+and+biotic+components+of+ecosystem+pdf PDF link annotation
    • http://retoxen.mypressonline.com/mokimaritezadebatin.pdfIn PDF document text
    • http://gojavodevagajuw.mygamesonline.org/combinational_and_sequential_logic_circuits.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404500/normal_5fc7a8dfe62ac.pdfIn PDF document text
    • http://rovanenafet.getenjoyment.net/23180294759.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485457/normal_602305741d124.pdfIn PDF document text
    • http://levinorutuw.iblogger.org/nordictrack_act_pro_price.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wazagidonux/62801926316.pdfIn PDF document text
    • http://zezofakarol.myartsonline.com/human_anatomy_diagrams.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/724cd682-accc-499a-8455-b3c6a888ddd5/oppo_bdp-93_wont_turn_on.pdfIn PDF document text
    • http://mojajigutomikew.rf.gd/85135763739.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/why_does_my_panasonic_tv_remote_not_work.pdfIn PDF document text
    • http://womopemi.epizy.com/47578043649.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/revule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67680777-d2b3-4f74-8f9a-d452e2732059/beliwen.pdfIn PDF document text
    • http://moxowofabijis.epizy.com/youtube_photoshop_cs5_tutorials_for_beginners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/beac26e9-15c6-4338-8893-f500003699bb/ejercicios_con_porcentajes_resueltos.pdfIn PDF document text
    • https://s3.amazonaws.com/paxunu/essentials_of_statistics.pdfIn PDF document text
    • http://tukozadagafewan.rf.gd/bas_attendance_software_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a39a71e-7652-4ae6-8fd3-3e8b0c904fb1/elegoo_uno_r3_project_super_starter_kit_compatible_with_arduino_ide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f66e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF66E 5192 bytes
SHA-256: 8e2af2aee0c284f86b5c21742298adc1423148ac3091c4e70ed575da26b2e2c1
font_01_sfnt_off000107fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107FA 10800 bytes
SHA-256: e258c852f2cf2527a007e5e8da683eadfa329f64c56246271280a278eb8755b0
font_02_sfnt_off00012cd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CD2 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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