Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d82680d283a14de…

MALICIOUS

PDF

68.7 KB Created: 2021-02-10 13:42:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: dd602b255ab91519e86af78efdd6717e SHA-1: 00bb8bd6dd04a89e127684f89f3a9346d408fd2c SHA-256: 2d82680d283a14de812f44bcba5131c1cedccc24811ad93d7f9d1ce414f6e07b
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://seumenha.ru/wb?keyword=html%20form%20input%20submit%20vs%20button PDF link annotation
    • https://xibimitavidin.weebly.com/uploads/1/3/1/8/131871740/zeputoninawe.pdfIn PDF document text
    • https://gawakugoful.weebly.com/uploads/1/3/4/7/134757428/deseluxutovilujij.pdfIn PDF document text
    • https://jabenawonidibe.weebly.com/uploads/1/3/5/3/135385032/9500413.pdfIn PDF document text
    • https://cdn.sqhk.co/fegadosijete/jifhbMo/73020802687.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387715/normal_5fe338633f440.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416299/normal_6000916dbcf95.pdfIn PDF document text
    • https://voxalasodakuro.weebly.com/uploads/1/3/4/0/134042561/tozaxovenizerele.pdfIn PDF document text
    • https://toroxamaje.weebly.com/uploads/1/3/4/0/134017611/98beba623c.pdfIn PDF document text
    • https://sinukofulav.weebly.com/uploads/1/3/4/6/134634738/8775897.pdfIn PDF document text
    • https://cdn.sqhk.co/vuzowadijavu/ieLiigd/91857781175.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373508/normal_5fe7d1d26cabd.pdfIn PDF document text
    • https://gatikewud.weebly.com/uploads/1/3/4/3/134382011/noxiwaradej_dariwurusafamuw_kuxubuwopug_zalatixotesik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379482/normal_5fe8610c8f3c9.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/werowibovezoje/capello_alarm_clock_manual_cr22.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/les_justes_albert_camus_english.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/havering_sixth_form_college_dress_code.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/stadler_form_charly_floor.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/vocabulary_for_ielts_advanced_free.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_off0000d083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD083 5000 bytes
SHA-256: 6b5d8a560155208a112a3e6ad4cc6cd85b5112e30e2bb51e0763b6cd59e0355c
font_01_sfnt_off0000e16f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE16F 10528 bytes
SHA-256: 1bf9ef7a4715d2506eb1a40f71a1ca3ea14b3c45e5bf9150984a44f90e4beeac

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