Malicious PDF — malware analysis report

Static analysis result for SHA-256 451332e6e6613423…

MALICIOUS

PDF

66.5 KB Created: 2021-03-01 19:30:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 02cdf0a99cbd9a7374e63019909f3b38 SHA-1: ed6cc854e450f23b19ad119690fcc97513318cb5 SHA-256: 451332e6e661342317c8b3ae5d78de7c9fd038f8698e4e79d15cf971bba72b35
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL leading to a malicious domain. The document body, though heavily obfuscated, appears to be a lure related to cleaning instructions, aiming to trick users into visiting the malicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

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://baarspo.ru/award?keyword=how+to+clean+bissell+powerlifter+swivel+pet PDF link annotation
    • http://dapajurop.mygamesonline.org/what_were_the_short_term_effects_of_world_war_2.pdfIn PDF document text
    • http://organicsss.space/unisa_purchase_script_application_form7jzu5.pdfIn PDF document text
    • http://sale20.site/sumoramovuxovetawijidej05.pdfIn PDF document text
    • http://dalnoboyi.xyz/61428982115987rc.pdfIn PDF document text
    • http://giwapozolaleg.mypressonline.com/xawamuko.pdfIn PDF document text
    • http://qunit.space/lavafogiqznkf.pdfIn PDF document text
    • http://lnstagaram-verifiedbadges-from.com/wonisadegesavunenun.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/dell_latitude_e5400.pdfIn PDF document text
    • http://insurancecarusa.com/wu_tang_saga_cast_imdb3ojdp.pdfIn PDF document text
    • http://getveran.site/drive_in_movie_theater_suffolk_virginiaq1pem.pdfIn PDF document text
    • http://kvadro63.ru/774708917381mqlm.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/resixexi/pejofuwujik.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/adobe_photoshop_cs5_basic_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/toxefugivivogogovef.pdfIn PDF document text
    • http://sidepojedava.myartsonline.com/32644251596.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/mini_cooper_repair_center_near_me.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_off0000c759.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC759 5264 bytes
SHA-256: 96a3592ca5cb6b8ea2aff5795df8e10d7a105d5894ed5115cda7860a96d180e4
font_01_sfnt_off0000d964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD964 10588 bytes
SHA-256: ff77480ca9e275d0516dae8b8ec1180deecd1dbdff11efe068d03842316597fb

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