Malicious PDF — malware analysis report

Static analysis result for SHA-256 97aa59142781ac29…

MALICIOUS

PDF

73.0 KB Created: 2021-02-20 00:36:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 79105cedcb3475ca3a63478b83fb0103 SHA-1: dea7405513a32b2df5afe320c5e3c5af358b1cdf SHA-256: 97aa59142781ac29dca0101e4cb985f62452c07267c1d90c8c482abbc6b068b1
136 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a lure for downloading software, specifically 'Need for speed most wanted apk uptodown', which redirects to the URL https://jottigo.ru/wix?keyword=need+for+speed+most+wanted+apk+uptodown. This URL is flagged as an SEO redirector, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wix?keyword=need+for+speed+most+wanted+apk+uptodown PDF link annotation
    • http://shoop-ft.ru/lefisurolapat06o8h.pdfIn PDF document text
    • http://nesobaka3.xyz/active_and_passive_voice_exercises_present_tensem0ruw.pdfIn PDF document text
    • http://otomail.business/budenanofebaxezofuzokivefn6uw.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/dofufiri/fmla_guidelines_georgia.pdfIn PDF document text
    • http://gadejoretalul.rf.gd/news_reporter_script_tagalog.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/aluminum_sheets_for_enclosed_trailer.pdfIn PDF document text
    • http://julisanusifi.rf.gd/articles_of_incorporation_form_georgia.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/gulotozisidiba.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/simple_and_clean_piano_sheet_music.pdfIn PDF document text
    • http://xaxotuk.epizy.com/xobuwitezowogoboke.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/dulanoruvowosima.pdfIn PDF document text
    • https://s3.amazonaws.com/jupudizadid/glue_plexiglass_sheets_together.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/jisetuwasetarozoxidedimot.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_off0000e0c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C5 5280 bytes
SHA-256: 6e270828af680b4579e0276ecb930f6592edfb80d7dec4ea2059883bad8fe522
font_01_sfnt_off0000f2bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BF 10556 bytes
SHA-256: 284412bb6f4565b0221472188e1bf213492d4a4b2e501f92eb71b59c31237f3f

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