Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1393f93259eddf4…

MALICIOUS

PDF

84.3 KB Created: 2021-03-22 00:48:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: fcbae935b63ff3197bcef7b5b9bbaebb SHA-1: 1979c8532979cb9fab1a4983547f55fb51d7cc6d SHA-256: e1393f93259eddf40228096ff6094efeccb504eecbe71c6c8702fc0bb0588f45
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, likely to deliver a phishing or malware payload. The ClamAV detection and ML classifier strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to geometry practice, aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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://maypoin.ru/wix?keyword=lesson+11.1+practice+a+geometry+answers+circumference+and+arc+length PDF link annotation
    • http://dontbeshy.xyz/guvorubewifutn51ay.pdfIn PDF document text
    • http://microdigitalmeter.xyz/8402088852oazfl.pdfIn PDF document text
    • http://bewewafip.scienceontheweb.net/nibez.pdfIn PDF document text
    • http://digitalcalakk1.xyz/42834295623tg3zi.pdfIn PDF document text
    • https://cdn.sqhk.co/xegunorasu/jbidcjq/gejogutulifomuvumeg.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwunikuneg/Cyjfjf7/23787957517.pdfIn PDF document text
    • http://kamini33.ru/livros_de_histria_do_brasil1el6t.pdfIn PDF document text
    • http://vigirorimikana.medianewsonline.com/82121075480.pdfIn PDF document text
    • http://zarabotok.space/xanathar_s_guide_to_everything_downloadjo0xs.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxeromewime/v6higjI/divarication_of_rectus_abdominis_muscles_dram.pdfIn PDF document text
    • https://cdn.sqhk.co/balaragu/hjaXjdr/les_trucs_de_grand_mere_pour_maigrir.pdfIn PDF document text
    • https://cdn.sqhk.co/bagadogod/ghjegcm/wire_size_calculator_app.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lusegokaves/reporter_young_sklep.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/remington_700_adl_243_accuracy_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eaddeb1-0272-43db-ad67-b2cf21237a35/51109115475.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14cef263-1072-42f0-97a5-59948439501f/sears_leaf_blower_gutter_attachment.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/condonation_application_template.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/celtx_ou_final_draft.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/do_vibration_machines_help_lymphatic_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3603144e-3d7a-4112-87d1-15214c18d165/windows_7_ultimate_32_bit_torrent_download_kickass.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/how_to_clean_oreck_xl_air_purifier_cell.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04faab7e-f84e-40f1-adc1-a30a77c9d955/cissp_for_dummies_7th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/65258182173.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/64892602947.pdfIn PDF document text
    • http://bowegasobufur.myartsonline.com/la_blockchain_pour_les_nuls.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eaa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA7 2164 bytes
SHA-256: bb4f55506de07274f4e400e196cf2eeb6cd63adda04bac3381a9bd3195dc0cfb
font_01_sfnt_off0000f4b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B3 5788 bytes
SHA-256: 37d52d31d1f301f07b339ccc2c176f1f40257dd423f031ec57449e62577299fa
font_02_sfnt_off0001085c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1085C 10804 bytes
SHA-256: ea4143b0ee44719a8b775f9b905042e78d7fd9cfd6d03b02315361e63dac7fd8
font_03_sfnt_off00012d14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D14 16136 bytes
SHA-256: 8d0ca5441952925faa6f68d28470995fcd5e3edd800b1977fac83179433ae1db

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