Malicious PDF — malware analysis report

Static analysis result for SHA-256 49e2a97da2f910ee…

MALICIOUS

PDF

67.0 KB Created: 2021-02-13 04:44:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fd5862d9bcd12272ed88b27eec40f2d5 SHA-1: b3e8e8a08aea96b879b5ac4c048445eef48f8543 SHA-256: 49e2a97da2f910eefeba5057611ef5d5337acd533eae61f6e4d3d13115e265df
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/wix?keyword=nuclear+chemistry+worksheet+%25231+answer+key PDF link annotation
    • http://nuveclovet.xyz/metaphysics_as_a_branch_of_philosophyvywhd.pdfIn PDF document text
    • https://gojafone.weebly.com/uploads/1/3/4/8/134891791/gemuz-sisadiw.pdfIn PDF document text
    • http://orbitan.fun/attendance_tracker_app_freep2667.pdfIn PDF document text
    • https://cdn.sqhk.co/labojime/P6ja9ge/bluestone_paver_patio_ideas.pdfIn PDF document text
    • https://loxufoxoxow.weebly.com/uploads/1/3/5/9/135982175/labolo_tubizozonuluk_mamadowaziser.pdfIn PDF document text
    • http://omynutural.space/jajewiludejowofetqo1tx.pdfIn PDF document text
    • http://4d-5d.com/employee_handover_template_exceldcb89.pdfIn PDF document text
    • https://cdn.sqhk.co/novigigexuxo/hahcjgj/god_simulator_2_roblox.pdfIn PDF document text
    • https://xuzomavarek.weebly.com/uploads/1/3/1/3/131383242/73631fb386.pdfIn PDF document text
    • http://serviceforyou.site/overall_heat_transfer_coefficient_calculator9dczm.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/kagedatabujo/abiudi_misholi_songs_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/cellulose_acetate_sheets_for_electrophoresis.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/federal_odometer_statement_form_arkansas.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/carto_cnpj_receita_federal.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/boxplot_example_with_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/kovibu/89137603956.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_off0000c9df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9DF 5268 bytes
SHA-256: e1f9239c295b92421bb4c947894b38a8155ee1a7c27b242c4e6e47ba0177e752
font_01_sfnt_off0000dbb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB9 10628 bytes
SHA-256: ab4f8a4c225770c2b6b7f2ce6206dfda9fe7922beafd0125d8816b48d29c12f1