Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfc0e9ad2b348319…

MALICIOUS

PDF

34.4 KB Created: 2020-11-08 03:41:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 0b6642444dea15ae08d66c9b95862ea8 SHA-1: 077056a016af371178e144ad383340958220774f SHA-256: bfc0e9ad2b34831903acb5f6b6008c5b0a1acbb2b6e4d5a1e4e87f815c7ae0f7
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafficel.ru/123?keyword=geometry+construction+worksheet+practice PDF link annotation
    • https://dozexida.weebly.com/uploads/1/3/4/5/134590021/tiberirifoxa.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/2c1c73aad3f9.pdfIn PDF document text
    • https://fokomowopijav.weebly.com/uploads/1/3/4/6/134643156/6441106.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/rovikibixu/44150754688.pdfIn PDF document text
    • https://siwalaki.files.wordpress.com/2020/11/47670158750.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/97340826602.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/a_level_biology_coordination_notes.pdfIn PDF document text
    • https://xedunosigib.files.wordpress.com/2020/11/zepapewufag.pdfIn PDF document text
    • https://vakonowar.files.wordpress.com/2020/11/dibidaverizajadesebam.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/who_is_asagai_a_raisin_in_the_sun.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/ap_sachivalayam_jobs_notification.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_off00004900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4900 5432 bytes
SHA-256: da60c093014f54d3c587e86fe1a5c297ba577e90ecabf63862a8c81e9571897e
font_01_sfnt_off00005b6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B6A 9856 bytes
SHA-256: 3faeff9f0257d583d6a20356cf43b5bb5def6ba4f3114e0a0fed7010024641d7

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