Malicious PDF — malware analysis report

Static analysis result for SHA-256 2593c2fb22c1c403…

MALICIOUS

PDF

65.0 KB Created: 2021-02-22 03:50:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8f1ba133f63d0d689e68d5c40418a403 SHA-1: 096c1c9b13a738d87bf88aaae4817cb2d4fe6a19 SHA-256: 2593c2fb22c1c403e49dff47e7d36c2b332cab202b2a157a111d45d3b01fa79e
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://leonvi.ru/wix?keyword=sentence+combining+worksheet+with+answers PDF link annotation
    • https://xonajababivoxo.weebly.com/uploads/1/3/4/0/134040492/fenezagul-jorinaf-vanod-likajanawigilet.pdfIn PDF document text
    • http://folivapizi.66ghz.com/project_based_contract_template_philippines.pdfIn PDF document text
    • https://worijuxadije.weebly.com/uploads/1/3/4/8/134863955/64dfafeb7f.pdfIn PDF document text
    • https://fezowekufeda.weebly.com/uploads/1/3/3/9/133999429/fe841c46b971542.pdfIn PDF document text
    • http://sunepoxuvigos.66ghz.com/modulo_joystick_arduino_datasheet.pdfIn PDF document text
    • https://befewegumezozem.weebly.com/uploads/1/3/1/4/131453636/zuximijo_zanoxapam.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/bomifabipi/78074328133.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/duwupigafebamavusumul.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/crimes_against_humanity_game.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/manual_dremel_4000_portugues.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/filijubuzonu.pdfIn PDF document text
    • https://s3.amazonaws.com/xijilesuzuxo/34108787040.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/lagukezunogis.pdfIn PDF document text
    • http://bikufupok.rf.gd/36708295941.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/blink_xt_camera_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/vopovoxumavitov.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/rufosumatepijitin.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_off0000c15e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC15E 5580 bytes
SHA-256: 239b969f3087f993f2263f1c47de8ccd996ff786e87f8a72afeffe174f9e055b
font_01_sfnt_off0000d444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD444 10024 bytes
SHA-256: 9b1c39c1821559ca9d4a1582b9dfdc67ac7e48a71eaac0a1ee563f2d01cfa4c3

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