Malicious PDF — malware analysis report

Static analysis result for SHA-256 db9d0d5ce3400267…

MALICIOUS

PDF

262.1 KB Created: 2021-03-07 22:51:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 6acc0eb00942ad07a02a7b1a032c736c SHA-1: 760af7a27956af5db1fb0cfba2320393ac99ad36 SHA-256: db9d0d5ce34002671b2cbbe96920586259f9cce3a0077a75f7aeb80b9d0d4dd4
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result for a sensitive topic, likely to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI are indicative of a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://seumenha.ru/wb?keyword=sex%20offender%20registry%20hartford%20ct PDF link annotation
    • https://lilalosemojuwo.weebly.com/uploads/1/3/0/8/130814601/zurigexixeveturupubi.pdfIn PDF document text
    • https://cdn.sqhk.co/junulevi/hicEhih/phone_ringtones_app.pdfIn PDF document text
    • http://kapovulup.mywebcommunity.org/what_is_the_slanted_tip_of_a_needle_called.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493610/normal_5fd994925026d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465012/normal_5ff079eea9a93.pdfIn PDF document text
    • http://tifusavegapawuf.mygamesonline.org/twilight_breaking_dawn_part_2_extended_edition.pdfIn PDF document text
    • http://pofuxubilet.sportsontheweb.net/35054561853.pdfIn PDF document text
    • https://zolopopi.weebly.com/uploads/1/3/3/9/133999976/cfb464.pdfIn PDF document text
    • https://temisufe.weebly.com/uploads/1/3/5/3/135384001/xixunejoza.pdfIn PDF document text
    • http://pemufosapakem.mypressonline.com/why_is_tom_sawyer_banned.pdfIn PDF document text
    • https://litukepulaj.weebly.com/uploads/1/3/4/8/134863372/kevoleni_rojiniwivak.pdfIn PDF document text
    • https://cdn.sqhk.co/nezafomura/giOVxo3/bloqueo_av_1_grado.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/palevijuj/cancer_de_piel_diagnostico.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/ny_daily_news_sports_reporters.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/vizio_model_e320vl_power_cord.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/19356771808.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/crested_budgies_breeding_information.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/52727881930.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/expos_sur_l_orthophonie.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_off0003cdc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3CDC0 5524 bytes
SHA-256: 6a94ac20f338a6aa33141cd2403db900243bc98ac790f3a4663d82a59e6516a9
font_01_sfnt_off0003e096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E096 12720 bytes
SHA-256: f535698149be7e0420966ba9095d00242d44d9b9a33ffe0438466cb19ae56d7d

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