Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7cd578596deac46…

MALICIOUS

PDF

75.3 KB Created: 2021-03-18 09:59:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: cdc6acfafffac6b54b711eb23ae99b80 SHA-1: d3e105a8875b5c7ec399d8f783773153f0b91a31 SHA-256: e7cd578596deac465a387df7c6970e24f809c9b8d86a3828816327a929cb024a
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site for further exploitation. No scripts were extracted, but the presence of the malicious URL strongly suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://bologen.ru/wix?keyword=4-4-0+american+steam+engine PDF link annotation
    • https://lovaxases.weebly.com/uploads/1/3/4/6/134685664/xibiv.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefimex/4tgejhd/41487306940.pdfIn PDF document text
    • https://kesizibewasi.weebly.com/uploads/1/3/0/8/130813921/tonipipirafi_zulonowen_muwodafepakomu.pdfIn PDF document text
    • http://kobujiva.iblogger.org/how_to_use_bissell_proheat_carpet_cleaner.pdfIn PDF document text
    • http://doxewoga.iblogger.org/todo_sobre_el_albinismo.pdfIn PDF document text
    • https://cdn.sqhk.co/vawapisoxe/piid59w/chess_pieces_for_sale_philippines.pdfIn PDF document text
    • https://cdn.sqhk.co/kurutuxerodi/fhdKCii/33606411653.pdfIn PDF document text
    • https://letuwolisabir.weebly.com/uploads/1/3/4/6/134602086/somiwizuduvokub.pdfIn PDF document text
    • https://vufobuvi.weebly.com/uploads/1/3/1/1/131163959/tonovekawopaxa-vujejo.pdfIn PDF document text
    • http://sojurufo.iblogger.org/causation_in_the_law_hart.pdfIn PDF document text
    • http://serikanipesemo.iblogger.org/refimidu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/74a2daa1-1ff2-4a24-868a-ac17ace10987/examples_of_health_and_safety_policies_in_the_workplace.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/92893434371.pdfIn PDF document text
    • http://kutelitowolobe.rf.gd/design_for_powerpoint_presentation_2010_free.pdfIn PDF document text
    • http://wijopimitiraze.epizy.com/how_to_start_a_career_in_gunsmithing.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/how_to_help_cat_separation_anxiety.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d197252f-1039-467c-83df-420fc3632174/xelupulifodobotakogetokis.pdfIn PDF document text
    • http://dokaginiw.epizy.com/preschool_coloring_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/jugapufesipone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9fff231-38dc-4ddd-a19a-54ad9973cf5b/the_lively_art_of_writing_chapter_1_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08dd392c-4c8f-4dcb-ab81-e4f1aee4080b/61580167881.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/warsaw_airport_map.pdfIn PDF document text
    • http://sezajebufixi.epizy.com/best_cartoon_wallpaper.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/90613364029.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_off0000e966.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE966 5256 bytes
SHA-256: 73789cadb23b4fd7efbbb16456aa500069ba5e8dc40743555aef311a274c9c53
font_01_sfnt_off0000fb39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB39 10204 bytes
SHA-256: f88e110bd236f335cc85988bc427b51e018c305ab6508b4220248cfa61b4b5eb

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