Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fd370e763320cdb…

MALICIOUS

PDF

72.6 KB Created: 2021-02-04 17:44:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 05752cc61b5d806b936acf666c00ec38 SHA-1: c5e039cc2dac821e318438ef2ad7626965b5399b SHA-256: 7fd370e763320cdbdd0d10229347990493aafba400a3afc2344e0f56e742e36e
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://seumenha.ru/wb?keyword=canada%20lottery%20form PDF link annotation
    • https://cdn.sqhk.co/jerusuxelek/bjj0JRl/48761130198.pdfIn PDF document text
    • https://cdn.sqhk.co/tetaxekumipi/hjeXiga/tiles_near_merry_hill.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446379/normal_6010f9000c2df.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414494/normal_5ff856a30ca27.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421218/normal_5fc7bde4ce259.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474988/normal_5fe5943424c57.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489848/normal_5ffd87ee040d4.pdfIn PDF document text
    • https://cdn.sqhk.co/rifokinimito/qhjghgi/samurai_2k_paint_review.pdfIn PDF document text
    • https://cdn.sqhk.co/jogekiluse/mmt4xgh/mogipugopojibafofemili.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/nazekisigiduz/yahoo_messenger_old_version.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/relakepupik.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/technical_drawing_courses.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/rdr2_gambler_challenge_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/the_lottery_study_guide_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/bododimiler.pdfIn PDF document text
    • https://s3.amazonaws.com/goveruduzewoxu/university_botany_textbook.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/rikadironirabola.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/fisovonetoron.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_off0000de93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE93 4884 bytes
SHA-256: 52a036a1f5d861c52d0b36836ca16e43ff672d6601fbb201c241824909f837c3
font_01_sfnt_off0000ef23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF23 11288 bytes
SHA-256: 9d1819e0a0427d8b08a3aabc6b8ef94e3b234bd70d843f6cfb0809379b711637

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