Malicious PDF — malware analysis report

Static analysis result for SHA-256 09460679f7ec8408…

MALICIOUS

PDF

73.6 KB Created: 2021-03-28 04:10:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 506303c5bb2ac105d01f3f838ee6b17d SHA-1: 42f3d19ef2772bd173d1adb6a4584eb290d26786 SHA-256: 09460679f7ec84085fa94b33c3699cd72ee05bc0acc00987a899808d3f90da7e
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/strik?utm_term=noco+genius+wicked+smart+charger+g750 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4383149/normal_5ffa08e9af5bd.pdfIn PDF document text
    • https://cdn.sqhk.co/fodibaniwe/igTrzia/tank_stars_game_download_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496816/normal_603dd01a44593.pdfIn PDF document text
    • https://cdn.sqhk.co/rebamomidaw/ja1jCge/3d_pixel_racing_demo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416140/normal_5febb61327b13.pdfIn PDF document text
    • https://cdn.sqhk.co/gidufulelav/ah0gfgd/disney_read_along_books_with_record.pdfIn PDF document text
    • https://cdn.sqhk.co/wemorapi/ifjfT8p/kawekoniradozitaxi.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/divexikav/58566552443.pdfIn PDF document text
    • http://reviwegovamu.rf.gd/7028665614.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/driving_school_2019_apk_hack.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/84442102927.pdfIn PDF document text
    • http://pulilidason.epizy.com/37390107999.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/excel_spreadsheet_for_counting_macros.pdfIn PDF document text
    • https://60ceb029-6f78-4d42-8ea4-15ca08d8077a.filesusr.com/ugd/857e61_69c771cb0f5e40728f811f99c3f709fa.pdf?index=trueIn PDF document text
    • http://nupabumafe.epizy.com/degradacin_de_los_suelos.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/non_right_triangle_word_problems_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/la_crosse_technology_alarm_clock_review.pdfIn PDF document text
    • https://a32e93c2-1aa3-4149-af29-aa5d163ab988.filesusr.com/ugd/40336e_74eef30bd8fa44209d3ec6423c7a9f55.pdf?index=trueIn 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_off0000ddbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDBD 5792 bytes
SHA-256: 0e5deb0cbf1daae7280c359b8b1b83216903de14d274f362ae8df172315489c6
font_01_sfnt_off0000f173.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF173 12704 bytes
SHA-256: 5e32112f746a1580a29c5d6756a3d10f2cdf1f25b0cfa4c8cebd2b570c5ad86d

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