Malicious PDF — malware analysis report

Static analysis result for SHA-256 7026b0dc0374162c…

MALICIOUS

PDF

75.4 KB Created: 2021-02-24 05:08:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: f1cfc755f44aaf6e047e8e2d5f51d8c3 SHA-1: f9e7925d8bb5c2b12de7faa46eccce90b72cb1df SHA-256: 7026b0dc0374162c4f64c320547560717009348126bb3050ffbabe214677c613
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or scam campaign. Although no scripts were explicitly extracted, the presence of embedded URIs and the nature of the detection suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://jacksth.ru/wb?keyword=how%20to%20tell%20ps%20vita%201000%20or%202000 PDF link annotation
    • https://cdn.sqhk.co/kosaboze/chghjZK/amazon_delivery_driver_uniform_policy.pdfIn PDF document text
    • https://cdn.sqhk.co/dafisuwikib/ihhaTvM/luzuxumadetajepapejelot.pdfIn PDF document text
    • http://naturaleone.space/yelp_dataset_jsonznp60.pdfIn PDF document text
    • http://odemebayisitrafik.com/55684803444rl09w.pdfIn PDF document text
    • http://deutschebank-meine.com/jasper_report_expression_editor_boldb9int.pdfIn PDF document text
    • http://brumbum6.xyz/40147549485yt27s.pdfIn PDF document text
    • https://cdn.sqhk.co/zenekukera/WVYAiiX/71295875329.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/fokapikow/free_movie_bad_boy_bubby.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/pdf_annotation_program.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/logo_quiz_level_2_all_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/achena_prem_bengali_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/guitar_chords_chart_for_beginners_left_handed.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/tufanojuwalul.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/horror_movies_2019_mp4_free.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/mariah_carey_without_you_video.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/rafanuwiturugir.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_off0000e926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE926 5252 bytes
SHA-256: f31b1c48d21681f8f2ba1409e6329c6739f98ea294a8540579c168fa0494c6d6
font_01_sfnt_off0000fb24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB24 10640 bytes
SHA-256: fef6b27e95c4bc43a23d99574a5b18a655b64622832e679b91d34ec2de23d13c

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