Malicious PDF — malware analysis report

Static analysis result for SHA-256 af73d35f0568a4ea…

MALICIOUS

PDF

78.0 KB Created: 2021-01-22 13:17:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6d289b6e0aaa45687e08f56f1edf9e05 SHA-1: 0d8d7f6c843da1e15dc49f5da2687c2d7c7802df SHA-256: af73d35f0568a4ea0da73b37b8153404dc467968da444faa65851a70e8b4c4b6
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/123?utm_term=fashion+nova+size+guide+shorts PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4452846/normal_5ff71203a3c44.pdfIn PDF document text
    • https://cdn.sqhk.co/fekigimuzib/idi4apS/pixel_world_unblocked_76.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462368/normal_5fe004c2acede.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/dapekufoxiraku/kutty_movie_songs_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/aldi_talk_app_windows.pdfIn PDF document text
    • http://nidudovuj.epizy.com/2007_bmw_z4m_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/37542837368.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/chicago_style_footnotes_guide.pdfIn PDF document text
    • http://popuzavefigud.epizy.com/commitment_of_traders_report_gold_futures.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/health_inspector_report_a_restaurant.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/67106737200.pdfIn PDF document text
    • https://s3.amazonaws.com/paxunu/american_quarter_horse_registration_form.pdfIn PDF document text
    • http://tekabexorita.rf.gd/vasujajo.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/gemesapudivemanogituva.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/fodovelanajogidino.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_off0000e905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE905 5120 bytes
SHA-256: bb9352ff10050b7308f2910a8a9014d79e25470154579474c6aea2676032ccd7
font_01_sfnt_off0000fa7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7C 15000 bytes
SHA-256: 405d0681931c9d96ced795a5de04f67c6944eea15ecfacb6bd89546696a3f7d2

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