Malicious PDF — malware analysis report

Static analysis result for SHA-256 d09fdf87e2769a29…

MALICIOUS

PDF

64.6 KB Created: 2021-02-27 21:22:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: fe1dc7103882c4f1c9f876147342bab3 SHA-1: cc0b7172f25aa54739134ab93b0f7122383e881d SHA-256: d09fdf87e2769a29cae863657a486e15b322527728d1e0570c6689fc6f04e628
96 Risk Score

Malware Insights

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

The file is a PDF containing obfuscated content and a high-confidence ML classification indicating maliciousness. It includes an external URI pointing to 'baarspo.ru', which is likely part of a phishing or malware distribution scheme. The presence of embedded URLs and the overall structure suggest an attempt to trick users into visiting a malicious site, potentially for credential theft or to download further malicious content.

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://baarspo.ru/strik?utm_term=house+of+spirits+movie+netflix PDF link annotation
    • http://zanovekolasin.mywebcommunity.org/how_to_lose_weight_well_mediterranean_diet.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/befoberitinen.pdfIn PDF document text
    • https://cdn.sqhk.co/kafekogi/jjuJl1Z/tumblr_backgrounds_for_youtube_banner.pdfIn PDF document text
    • http://newipufisatag.scienceontheweb.net/sunbeam_heated_blanket_cord.pdfIn PDF document text
    • https://cdn.sqhk.co/vozaxodep/iaYjihi/dukuk.pdfIn PDF document text
    • http://tonedomopoja.scienceontheweb.net/5_3_bank_mortgage_login.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366957/normal_5ff98e242a967.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/mefovu/nununabuf.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/identity_theft_report_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/45091736367.pdfIn PDF document text
    • https://s3.amazonaws.com/luborinizu/surgical_guides_for_dental_implants_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/android_blob_image_data_in_mysql_database.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_off0000c4ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4ED 4928 bytes
SHA-256: 06d749918f02f9984b75eea1a7bc834807318fe93375d4bfe0192ed703438cca
font_01_sfnt_off0000d5a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5A3 9320 bytes
SHA-256: 33afff0baec34d144dabd4cbc677fd871ed6e15c388bd65ec9fe100218699e3b

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