Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5b7a186ff047c75…

MALICIOUS

PDF

99.0 KB Created: 2021-03-01 12:01:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: d2772cd3f218a26a65193d3344e04761 SHA-1: a0bb8911a84366ac42093731424ee83055a167af SHA-256: f5b7a186ff047c75bdff9f5048959859f2d17675f38f93312fd599617061799b
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 pointing to a known malicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were extracted, the presence of the malicious URL suggests an attempt to redirect the user to a harmful site.

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://xezojetit.ru/123?utm_term=how+to+find+inverse+trig+functions+on+unit+circle PDF link annotation
    • http://goladelexugezi.sportsontheweb.net/super_mario_bros_2_3ds_w2-castle_star_coins.pdfIn PDF document text
    • http://hurricane1.space/mofakavarawonawubovakewul3pjno.pdfIn PDF document text
    • http://jiteruruw.sportsontheweb.net/sony_icf_cs15ipn.pdfIn PDF document text
    • http://dreamingdeveloper.com/87953283359iwz3e.pdfIn PDF document text
    • http://xitabijasava.getenjoyment.net/fofozinelagotakid.pdfIn PDF document text
    • http://bivitajuteje.mypressonline.com/what_is_the_best_ric_hearing_aid.pdfIn PDF document text
    • http://investorlands.ru/common_core_math_multiplication_worksheetsgucm3.pdfIn PDF document text
    • http://reduslim-italiaufficiale.site/tabla_de_densidad_de_fluidosbbavi.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
    • http://jokosen.atwebpages.com/is_the_spy_museum_in_dc_worth_it.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/american_airlines_cargo_pet_form.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/5028087105.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/baixar_extenso_all_video_er_professional.pdfIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/free_printable_guided_imagery_scripts.pdfIn PDF document text
    • http://girofili.myartsonline.com/bimokex.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/flame_detector_datasheet.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_off000137a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137A2 4976 bytes
SHA-256: 6fd9ce3a7e05bb41935cfd3f78ddcf8409a3b10726e5946e000a56d42afc2bec
font_01_sfnt_off000148bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148BB 11896 bytes
SHA-256: 6c1f5e25c98f6a62cef9c9017747acb4a502a4bce3e2674adfb049aa7371398d
font_02_sfnt_off0001703f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1703F 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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