Malicious PDF — malware analysis report

Static analysis result for SHA-256 b115744d2d8ebb11…

MALICIOUS

PDF

72.7 KB Created: 2021-03-20 08:01:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 126d5a4ad9d793bedbbab6c6cbd7aa36 SHA-1: 99cb123b8f2af9b2c5eda53bacfce1fdb31add66 SHA-256: b115744d2d8ebb113194935a04f2b0bfb51e1ef3ef026e1394e1439311d7f588
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://jottigo.ru/strik?utm_term=usf+map+parking', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text related to 'usf map parking', suggesting a lure to entice users to click the malicious link.

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://jottigo.ru/strik?utm_term=usf+map+parking PDF link annotation
    • http://gigezesuzobe.getenjoyment.net/xejurev.pdfIn PDF document text
    • http://mizebojusur.mypressonline.com/velocity_and_acceleration_formula.pdfIn PDF document text
    • http://lololoj.sportsontheweb.net/10192182936.pdfIn PDF document text
    • http://tufofol.medianewsonline.com/josadi.pdfIn PDF document text
    • http://rajukilodagoje.mygamesonline.org/37896130481.pdfIn PDF document text
    • http://rexevivejegox.scienceontheweb.net/what_is_breaking_news_today_in_india.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/dudujopixejikug/zalovivimolimemifolimire.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/hp_officejet_pro_8620_printer_in_error_state.pdfIn PDF document text
    • http://kasisag.epizy.com/latest_tom_clancy_games.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/application_letter_for_teacher_job.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/80969307256.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/carnivores_dinosaur_hunter_pro_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/negopuvugutuveziwanor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e3d060f-64cc-43d4-ba25-231fc2afa3eb/sexopefazetonesufud.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/medajakixegegapume.pdfIn PDF document text
    • http://mapixuxiloko.epizy.com/harry_potter_cello_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/central_hidroelectrica_cerro_del_aguila.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/regoma.pdfIn PDF document text
    • http://xijukogejutaril.epizy.com/wuxokerekamiwexu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdff9acf-307a-43c0-8ec5-3fa11cf75843/lost_tales_of_myth_drannor_trove.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_off0000e005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE005 5244 bytes
SHA-256: d6caa20550c77b58ccfc91c939266d34f1df32040e06558e29450ebae40b102b
font_01_sfnt_off0000f1cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CF 10604 bytes
SHA-256: 494c08424a438115d53c72accee9112a6058b7d369fd9134e1df60ccfb31650c

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