Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd9afbbcaf0bee34…

MALICIOUS

PDF

74.4 KB Created: 2021-03-01 23:57:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1ec00363109deebd1a5b65f6f92dbaee SHA-1: 9dd60442293aac07fa5bcb32d2071e28e5da6c18 SHA-256: dd9afbbcaf0bee34019f6d6ef07e3641b01d98778065bb9efeb69f891b607e3a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://vilenefex.ru/wix?keyword=vocabulary+workshop+unit+11+answers+level+b PDF link annotation
    • https://xadijonoru.weebly.com/uploads/1/3/3/9/133997446/3700196.pdfIn PDF document text
    • http://xafopawiki.medianewsonline.com/easytouch_indoor_control_panel_no_comm.pdfIn PDF document text
    • https://zowukudikumo.weebly.com/uploads/1/3/1/3/131382828/sebetadawaroli.pdfIn PDF document text
    • https://vepazigomopu.weebly.com/uploads/1/3/4/3/134398405/1a761.pdfIn PDF document text
    • https://cdn.sqhk.co/kogujipubap/gm3ibms/30172100096.pdfIn PDF document text
    • http://bivaxosufuxibo.mygamesonline.org/electrical_engineering_materials_notes.pdfIn PDF document text
    • https://cdn.sqhk.co/muwanije/w6hcgh2/pojexelabatonidufuva.pdfIn PDF document text
    • https://cdn.sqhk.co/mibemofega/haMuifn/wabirajaserabuzoz.pdfIn PDF document text
    • https://cdn.sqhk.co/zetanitanedo/2Hhdgf9/ludexagogeli.pdfIn PDF document text
    • https://kagozekexep.weebly.com/uploads/1/3/5/9/135956698/4869182.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sinusudixuxuwad.atwebpages.com/bekunane.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/30639423079.pdfIn PDF document text
    • http://vipuzala.myartsonline.com/73407632786.pdfIn PDF document text
    • https://s3.amazonaws.com/gimufesajo/break_up_images_marathi.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/wimatotuxeputivedexidozi.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/maxugofavudumudan.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/jantex_floor_cleaner_safety_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/rewejagawineparakenek.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_off0000e816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE816 5496 bytes
SHA-256: 139e11a9e4bcbcc98e6c36bd88d10d8d6ff0a476a613ccc7daee66803148704a
font_01_sfnt_off0000fae3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE3 9804 bytes
SHA-256: 34258059f48b1cfc76d6a99227cb0d64a3a53c374f1dbc318b7703d491978321

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