Malicious PDF — malware analysis report

Static analysis result for SHA-256 27bd864b719b0be3…

MALICIOUS

PDF

73.6 KB Created: 2021-02-24 09:47:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 55668f2835077926d06b185bcd80159e SHA-1: c3e090d92be2289dc5feaffe81e0f89d3ffb71e5 SHA-256: 27bd864b719b0be3cb1fdf8e0dc97cead0a059f215da4cb6c4fbdf896fceb7bb
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to 'druttle.ru', which is flagged as suspicious. The document body, though heavily obfuscated, appears to contain a search query related to car maintenance, suggesting a lure to trick users into clicking the malicious link. ClamAV detection and ML classification strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/strik?utm_term=how+many+quarts+of+oil+does+a+2007+toyota+yaris+take PDF link annotation
    • http://tublitalia.fun/interview_english_conversation1cm6y.pdfIn PDF document text
    • http://copyrightproblem.com/tiktok_download_pc_play_storedegbp.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/sebunuzu/11262727166.pdfIn PDF document text
    • https://s3.amazonaws.com/dipafuxe/memex.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/tabovemaxepodidale.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/97942783269.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/pomexevenutedizab.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/sight_word_tracing_worksheets_for_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/98263206752.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/86392832318.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/78103492449.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/kuzowuweromalidejugamovof.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/30170198424.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/9748809657.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/pelov.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/kendo_ui_angular_grid_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/wifamokejiwolemoj.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/hiren_boot_iso_file.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/hdfc_mutual_fund_form_for_redemption.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/33709392434.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_off0000decf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDECF 5752 bytes
SHA-256: f5a4788404c04b2741e45730cad66a602b2c5c8cf29442f184a185b4642e21f5
font_01_sfnt_off0000f268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF268 11520 bytes
SHA-256: d65d83a25827bd206d467e03d5688efc7eb490d9f9a29b294ae4e059d32fe4e0

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