Malicious PDF — malware analysis report

Static analysis result for SHA-256 73adbe54bd3038ad…

MALICIOUS

PDF

68.3 KB Created: 2021-02-06 15:00:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ad0088a517c748eb385550b8f884b419 SHA-1: 22f669cc89ccc45de19b03a44c5e0b569da6b434 SHA-256: 73adbe54bd3038adc9004b38e865de2931350d963bc4af7bff5fb1bfc2477ed7
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wb?keyword=word%20cookies%20carrot%20special%20level%205%20answers PDF link annotation
    • http://frontglass.xyz/62696939603wpjl6.pdfIn PDF document text
    • https://cdn.sqhk.co/powosinubuk/gjGYhhv/sijiwukuporijolunanofufu.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxiropuwomo/40LCjDb/miroco_led_floor_lamp.pdfIn PDF document text
    • https://cdn.sqhk.co/navotezive/gahgjhe/73153266127.pdfIn PDF document text
    • https://cdn.sqhk.co/lituxopevuk/fgckid6/red_sunflower_seeds_edible.pdfIn PDF document text
    • https://cdn.sqhk.co/pudinivil/ihejcNu/word_cookies_rose_level_12_tango.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/posufij/89153744437.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/3663557005.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/laxepidabagamew.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/61367586054.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/apple_inc_email_format.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/datezofovemetonumuwuruxi.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/80227360052.pdfIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/kissing_smiley_gif.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/59673722848.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_off0000cf59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF59 5420 bytes
SHA-256: 81ef872a48f00af7d0769b83a36ca66265673607743d1d2cb410a7af36807e28
font_01_sfnt_off0000e1f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F8 10068 bytes
SHA-256: d156d16608ad89c1b028581a92aa56942fe195e5a79d84182e5355d243ca2459

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